MTCH6301 MTCH6301 Projected Capacitive Touch Controller Description: Touch Features: MTCH6301 is a turnkey projected capacitive controller that allows easy integration of multi-touch and gestures to create a rich user interface in your design. Through a sophisticated combination of Self and Mutual Capacitive scanning for both XY screens and touch pads, the MTCH6301 allows designers to quickly and easily integrate projected capacitive touch into their application. * * * * * Applications: * Human-Machine Interfaces with Configurable Button, Keypad or Scrolling Functions * Single-Finger Gesture-Based Interfaces to Swipe, Scroll or Doubletap Controls * Home Automation Control Panels * Security Control Keypads * Automotive Center Stack Controls * Gaming Devices * Remote Control Touch Pads Touch Sensor Support: * Up to 13RX x 18TX Channels * Individual Channel Tuning for Optimal Sensitivity * Works with Printed Circuit Board (PCB) Sensors, Film, Glass and Flexible Printed Circuit (FPC) Sensors * Cover Layer Support: - Plastic: up to 3 mm - Glass: up to 5 mm Multi-touch (up to ten touches) Gesture Detection and Reporting Single and Dual Touch Drawing Self and Mutual Signal Acquisition Built-in Noise Detection and Filtering Power Management: * Configurable Sleep mode * Integrated Power-on Reset and Brown-out Reset * 200 A Sleep Current (typical) Communication Interface: * I2CTM (up to 400 kbps) Operating Conditions: * 2.4V to 3.6V, -40C to +105C Package Types: * 44-Lead TQFP * 44-Lead QFN Touch Performance: * > 100 Reports per Second Single Touch * > 60 Reports per Second Dual Touch * Up to 12-Bit Resolution Coordinate Reporting 2012-2014 Microchip Technology Inc. DS40001663B-page 1 MTCH6301 Table of Contents 1.0 System Block Diagram ................................................................................................................................................................. 3 2.0 Configuration and Setup............................................................................................................................................................... 3 3.0 Pin Diagram.................................................................................................................................................................................. 4 4.0 Pinout I/O Descriptions................................................................................................................................................................. 5 5.0 Layout........................................................................................................................................................................................... 6 6.0 Communication Protocol ............................................................................................................................................................ 12 7.0 Memory Map .............................................................................................................................................................................. 21 8.0 Special Features ........................................................................................................................................................................ 23 9.0 Electrical Characteristics ............................................................................................................................................................ 26 10.0 Ordering Information .................................................................................................................................................................. 30 11.0 Packaging Information................................................................................................................................................................ 31 The Microchip Web Site........................................................................................................................................................................ 38 Customer Change Notification Service................................................................................................................................................. 38 Customer Support................................................................................................................................................................................ 38 Worldwide Sales and Service............................................................................................................................................................... 40 TO OUR VALUED CUSTOMERS It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and enhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via E-mail at docerrors@microchip.com. We welcome your feedback. Most Current Data Sheet To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at: http://www.microchip.com You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page. The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000). Errata An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision of silicon and revision of document to which it applies. To determine if an errata sheet exists for a particular device, please check with one of the following: * Microchip's Worldwide Web site; http://www.microchip.com * Your local Microchip sales office (see last page) When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are using. Customer Notification System Register on our web site at www.microchip.com to receive the most current information on all of our products. DS40001663B-page 2 2012-2014 Microchip Technology Inc. MTCH6301 1.0 SYSTEM BLOCK DIAGRAM FIGURE 1-1: SYSTEM BLOCK DIAGRAM MTCH6301 Touch Sensor Gesture Engine I2CTM Module Signal Acquisition Controller MultiTouch Decode Noise Reduction / Filtering Engine Communications Engine User Configuration Data TX0..17 TX Drive ADC RX Sense RX0..12 [Master Controller] Touch Data MICROCHIP PICkitTM Serial Analyzer USB Connection only for initial tuning or configuration 2.0 CONFIGURATION AND SETUP The MTCH6301 is preconfigured for a 12 Receiver (RX)/9 Transmitter (TX) touch sensor, mapped as shown in Section 5.1 "Typical Application Circuit". While the device will work out-of-the-box using this specific sensor configuration, most applications will require additional configuration and sensor tuning to determine the correct set of parameters to be used in the final application. Microchip provides a PC-based configuration tool for this purpose, available in the mTouchTM Sensing Solution Design Center (www.microchip.com/mtouch). Use of this tool requires a PICkitTM Serial Analyzer (updated with MTCH6301 support), as well as access to the I2C communications bus of the MTCH6301 device. Once the development process is complete, this modified parameter set must either be written permanently to the controller via NVRAM (see Section 8.3 "Nonvolatile RAM (NVRAM)"), or alternatively, it can be sent every time the system is powered on. Both the PICkit Serial Analyzer and the master I2C controller can be used for this purpose. 2012-2014 Microchip Technology Inc. DS40001663B-page 3 MTCH6301 3.0 PIN DIAGRAM 44-PIN TQFP, QFN(1,2) 44 43 42 41 40 39 38 37 36 35 34 SCL TX11 TX10 TX9 VDD VSS TX5 TX6 TX7 TX8 TX4 FIGURE 3-1: 1 2 3 4 5 6 7 8 9 10 11 MTCH6301 MTCH6301 33 32 31 30 29 28 27 26 25 24 23 TX0 TX1 TX2 TX3 VSS VDD RX0 RX1 RX2 RX3 RX4 TX13 TX12 RX10 RX9 VSS VDD RESET RX8 RX7 RX6 RX5 12 13 14 15 16 17 18 19 20 21 22 SDA TX17 TX16 TX15 TX14 VSS VCAP INT N/C RX12 RX11 Note 1: All RX/TX are remappable. Refer to Section 5.6 "Sensor Layout Configuration" for further information. 2: The metal plate at the bottom of the device is not connected to any pins and it is recommended to be connected to VSS externally. DS40001663B-page 4 2012-2014 Microchip Technology Inc. MTCH6301 4.0 PINOUT I/O DESCRIPTIONS TABLE 4-1: PINOUT I/O DESCRIPTIONS Pin Name Pin Number Pin Type RESET 18 I/P SCL 44 I Synchronous Serial Clock Input/Output for I2CTM SDA 1 I/O Synchronous Serial Data Input/Output for I2CTM INT 8 O Interrupt (from MTCH6301 to master) for I2CTM RX0 27* I/O RX1 26 I/O RX2 25 I/O RX3 24 I/O RX4 23 I/O RX5 22 I/O RX6 21 I/O RX7 20 I/O RX8 19 I/O RX9 15 I/O RX10 14 I/O RX11 11 I/O RX12 10* I/O TX0 33 O TX1 32 O TX2 31 O TX3 30 O TX4 34 O TX5 38 O TX6 37 O TX7 36 O TX8 35 O TX9 41 O TX10 42 O TX11 43 O TX12 13 O TX13 12 O TX14 5 O TX15 4 O TX16 3 O Description Reset Device (active-low) RX Sense (or TX Drive) (*RX0/RX12 cannot be used for TX Drive) TX Drive TX17 2 O N/C 9 N/C VCAP 7 P CPU Logic Filter Capacitor Connection VDD 17, 28, 40 P Positive Supply for Peripheral Logic and I/O Pins VSS 6, 16, 29, 39 P Ground Reference for Logic and I/O Pins; This pin must be connected at all times. 2012-2014 Microchip Technology Inc. No Connect DS40001663B-page 5 MTCH6301 5.0 LAYOUT 5.1 Typical Application Circuit The following schematic portrays a typical application circuit, based on a 12RX/ 9TX touch sensor. FIGURE 5-1: TYPICAL APPLICATION CIRCUIT VDD MICROCHIP PICkitTM Serial Analyzer Master I2CTM Controller MTCH6301 TX0 TX1 TX2 TX3 VSS VDD RX0 RX1 RX2 RX3 RX4 33 32 31 30 29 28 27 26 25 24 23 VDD 0.1 F RX0 RX11 12 13 14 15 16 17 18 19 20 21 22 SDA TX17 TX16 TX15 TX14 VSS VCAP INT N/C RX12 RX11 TX8 10 F 1 2 3 4 5 6 7 8 9 10 11 TX13 TX12 RX10 RX9 VSS VDD RESET RX8 RX7 RX6 RX5 GPIO/INT TX0 SCL SDA SCL TX11 TX10 TX9 VDD VSS TX5 TX6 TX7 TX8 TX4 44 43 42 41 40 39 38 37 36 35 34 0.1 F 20k O VDD 0.1 F 5.2 Decoupling Capacitors The use of decoupling capacitors on power supply pins, such as VDD and VSS, is required (see Figure 5-1). Consider the following criteria when using decoupling capacitors: 1. Value and type of capacitor: A value of 0.1 F (100 nF), 10-20V is recommended. The capacitor should be a low Equivalent Series Resistance (low ESR) capacitor and have resonance frequency in the range of 20 MHz and higher. It is further recommended that ceramic capacitors be used. 2. Placement on the Printed Circuit Board: The decoupling capacitors should be placed as close to the pins as possible. It is recommended that the capacitors be placed on the same side of the board as the device. If layout space is constrained, the capacitor can be placed on another layer on the PCB and connected using a via. Please ensure that the trace length from the pin to the capacitor is less than one-quarter inch (6 mm) in length. DS40001663B-page 6 3. Handling high-frequency noise: If the board is experiencing high-frequency noise, upward of tens of MHz, add a second ceramic-type capacitor in parallel to the above-described decoupling capacitor. The value of the second capacitor can be in the range of 0.01 F to 0.001 F. Place this second capacitor next to the primary decoupling capacitor. In high-speed circuit designs, consider implementing a decade pair of capacitances as close to the power and ground pins as possible (for example, 0.1 F in parallel with 0.001 F). 4. Maximizing performance: On the board layout from the power supply circuit, run the power and return traces to the decoupling capacitors first, and then to the device pins. This ensures that the decoupling capacitors are first in the power chain. It is equally important to keep the trace length between the capacitor and the power pins to a minimum, thereby reducing PCB track inductance. 2012-2014 Microchip Technology Inc. MTCH6301 5.3 Bulk Capacitors The use of a bulk capacitor is recommended to improve power supply stability. Typical values range from 4.7 F to 47 F. This capacitor should be located as close to the device as possible. 5.4 Capacitor on Internal Voltage Regulator (VCAP) A low ESR (1 ohm) capacitor is required on the VCAP pin, which is used to stabilize the internal voltage regulator output. The VCAP pin must not be connected to VDD and must have a CEFC capacitor with at least a 6V rating, connected to ground. The type can be ceramic or tantalum. 5.5 5.5.1 Touch Sensor Design Considerations SENSOR PATTERNS AND PCB LAYOUT With regard to touch sensor patterns, please refer to the mTouch Design Center (www.microchip.com/mtouch) for additional information on designing and laying out a touch sensor pattern, as well as using the correct techniques for PCB trace routing. 5.5.2 PROTOTYPING DESIGNS Due to their complexity, touch sensor designs typically require a thorough debugging phase to ensure a reliable product. If possible, it is suggested that flexible prototyping hardware be created with this in mind. A common example is providing external access to the communication lines for quick test and tuning while in-circuit. Microchip's Projected Capacitive Configuration Utility (PCU) and a configured PICkit Serial Analyzer can assist with early prototype development. See the online Microchip MTCH6301 device page for these and other support materials. 5.5.3 5.5.4 OPERATION WITH AN LCD MTCH6301 has integrated algorithms to detect and minimize the effects of noise, but proper care should always be taken in selecting an LCD and support components with a focus on reducing noise as much as possible. Since the interaction between the touch sensor and display is highly dependent upon the physical arrangement of the components, proper testing should always be executed with a fully integrated device. Please reference your projected capacitive touch screen manufacturer's integration guide for additional design considerations. 5.6 Sensor Layout Configuration To properly configure a sensor from a physical layout standpoint, the following registers must be correctly set: * RX Pin Map/TX Pin Map * RX Scaling Coefficient/TX Scaling Coefficient * Flip State 5.6.1 RX/TX PIN MAP By default, the RX and TX pins are set as shown in the Typical Application Circuit (see Section 5.1 "Typical Application Circuit"). It is recommended to keep this layout if possible. If a different layout or a different amount of sensor channels is required, the RX and TX pins are configured via the Pin Map register arrays. To access these arrays, please reference Section 6.0 "Communication Protocol" and Section 7.0 "Memory Map". The RX and TX lines are configurable for the purpose of making trace routing and board layout more convenient. Please note that while RX pins can be used as TX pins instead, a single pin cannot be used as both an RX and a TX channel concurrently. The pin maps are comprised of Pin Map ID numbers, which are shown in Table 5-1. SENSOR OVERLAY MATERIAL To prevent saturation of sensor levels, a minimum 0.5 mm plastic or glass overlay is required for proper operation of the device, even during a prototyping phase, even if this value is different than the final design. Note: At no time should the device be expected to respond correctly to a user touching a bare PCB sensor. 2012-2014 Microchip Technology Inc. DS40001663B-page 7 MTCH6301 5.6.2 TABLE 5-1: PIN MAP ID CHART Pin Map ID (RX) Map ID (TX) RX0 8 -- RX1 7 26 RX2 6 25 RX3 5 12 RX4 4 11 RX5 3 10 RX6 2 9 RX7 1 1 RX8 0 0 RX9 9 24 RX10 10 23 RX11 11 22 RX12 12 -- TX0 -- 13 TX1 -- 6 TX2 -- 3 TX3 -- 2 TX4 -- 4 TX5 -- 30 TX6 -- 29 TX7 -- 28 TX8 -- 7 TX9 -- 14 TX10 -- 15 TX11 -- 16 TX12 -- 5 TX13 -- 8 TX14 -- 34 TX15 -- 33 TX16 -- 32 TX17 -- 31 DS40001663B-page 8 RX/ TX SCALING COEFFICIENT Scaling coefficient registers exist in RAM for each axis (RX/TX) and must be modified in accordance with the number of channels that are in use (see Table 5-2). See Section 7.0 "Memory Map" for the location of these parameters. TABLE 5-2: Number of Channels RX/TX SCALING COEFFICIENTS RX/TX Scaling Coefficient (Base 10) (Base 16) 3 21845 0x5555 4 16384 0x4000 5 13107 0x3333 6 10922 0x2AAA 7 9362 0x2492 8 8192 0x2000 9 7281 0x1C71 10 6553 0x1999 11 5957 0x1745 12 5461 0x1555 13 5041 0x13B1 14 4681 0x1249 15 4369 0x1111 16 4096 0x1000 17 3855 0x0F0F 18 3640 0x0E38 2012-2014 Microchip Technology Inc. MTCH6301 5.6.3 SENSOR ORIENTATION (FLIP STATE) Once the sensor layout is complete, the final output orientation is configured using the Flip State register, as shown in Register 5-1. The Flip State register can be adjusted during operation to support applications where rotation occurs during use. Possible flip state configurations are detailed in Figure 5-2. Figure 5-2 shows the flip state values for all possible sensor orientations. REGISTER 5-1: FLIP STATE REGISTER U-0 U-0 U-0 U-0 U-0 R/W-0 R/W-0 R/W-1 -- -- -- -- -- SWAP TXFLIP RXFLIP bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as `0' -n = Value at POR `1' = Bit is set `0' = Bit is cleared bit 7-3 Unimplemented: Read as `0' bit 2 SWAP: 1 = RX axis horizontal; TX axis vertical 0 = RX axis vertical; TX axis horizontal bit 1 TXFLIP: 1 = Invert the TX axis 0 = Do not invert the TX axis bit 0 RXFLIP: 1 = Invert the RX axis 0 = Do not invert the RX axis 2012-2014 Microchip Technology Inc. x = Bit is unknown DS40001663B-page 9 MTCH6301 FIGURE 5-2: SENSOR ORIENTATION CHART TXn 0, 0 4096, 0 SENSOR 0, 4096 0, 0 4096, 0 0, 4096 4096, 0 SENSOR 0, 4096 0 1 1 4096, 0 SENSOR 0, 4096 TXn RXn SENSOR RXn SWAP TXFLIP RXFLIP 0 0 0 0, 0 4096, 0 0, 0 4096, 0 SENSOR 4096, 4096 RX0 RX0 1 0 0 SWAP TXFLIP RXFLIP 1 0 1 TXn 4096, 0 SENSOR 0, 4096 SWAP TXFLIP RXFLIP 4096, 4096 0, 0 RXn TXn 1 1 1 TX0 RXn TX0 0 0 1 SWAP TXFLIP RXFLIP 4096, 4096 0, 4096 SWAP TXFLIP RXFLIP 1 1 0 TXn SENSOR RX0 SWAP TXFLIP RXFLIP 4096, 4096 0, 4096 RXn 0, 0 4096, 0 RX0 TXn 4096, 4096 TXn RX0 TX0 SWAP TXFLIP RXFLIP RX0 0, 0 0, 0 0, 4096 4096, 4096 TX0 RXn RXn RX0 TX0 RXn SENSOR TX0 0 1 0 4096, 4096 TX0 RX0 TXn SWAP TXFLIP RXFLIP 4096, 4096 TX0 Default Configuration 5.6.4 UNUSED RX/TX PINS Unused RX/TX pins are driven to VSS automatically and should be left as no connects. DS40001663B-page 10 2012-2014 Microchip Technology Inc. MTCH6301 5.7 Example Custom Application Layout An example 4RX/11TX sensor is shown in Figure 5-3. In addition to using a completely modified pin layout, this example differs from the default configuration by also having the TX axis along the bottom (X) and RX axis along the side (Y). Note that some RX pins are also used as TX lines in this example. FIGURE 5-3: CUSTOM APPLICATION LAYOUT SCL TX11 TX10 TX9 VDD VSS TX5 TX6 TX7 TX8 TX4 Sensor Line MTCH6301 TX0 TX1 TX2 TX3 VSS VDD RX0 RX1 RX2 RX3 RX4 TX TX13 TX12 RX10 RX9 VSS VDD RESET RX8 RX7 RX6 RX5 SDA TX17 TX16 TX15 TX14 VSS VCAP INT N/C RX12 RX11 RX3 RX SENSOR TX0 MTCH6301 Pin Map ID 0 TX10 15 1 TX11 16 2 TX17 31 3 TX16 32 4 TX15 33 5 TX14 34 6 RX11 22 7 TX13 8 8 TX12 5 9 RX10 23 10 RX9 24 0 RX5 3 1 RX6 2 2 RX7 1 3 RX8 0 The Pin Map register array for this particular setup is set as follows: RX0 RX Pin Map: {3,2,1,0} TX Pin Map: {15,16,31,32,33,34,22,8,5,23,24} TX10 The resulting scaling coefficient for the custom application example is shown in Table 5-3. The scaling coefficients were derived using Table 5-2. TABLE 5-3: Axis CUSTOM APPLICATION SCALING VALUES Channels Scaling Coefficient RX 4 16384 TX 11 5957 Using Figure 5-2, the Flip State register should be set to `0b110' or 0x6. 2012-2014 Microchip Technology Inc. DS40001663B-page 11 MTCH6301 6.0 COMMUNICATION PROTOCOL 6.1 Overview The MTCH6301 I2C protocol follows a serial streaming format, not a register-based protocol. To achieve this, the device will assert the INT pin whenever a new packet of data is ready to be transmitted to the host. This will happen under two conditions: 1. 2. New touch or gesture data is available. A command has been sent to the controller and the response to this command is ready. Note: 6.2 6.2.1 Note that initiating a read from the device when INT is in a logic `0' state will result in an unpredictable response. I2CTM Pin Specification SERIAL DATA (SDA) The Serial Data (SDA) signal is the data signal of the device. The value on this pin is latched on the rising edge of the SCL signal when the signal is an input. With the exception of the Start (Restart) and Stop conditions, the high or low state of the SDA pin can only change when the clock signal on the SCL pin is low. During the high period of the clock, the SDA pin's value (high or low) must be stable. Changes in the SDA pin's value while the SCL pin is HIGH will be interpreted as a Start or a Stop condition. 6.2.2 SERIAL CLOCK (SCL) The Serial Clock (SCL) signal is the clock input signal of the device, generated by the host. The rising edge of the SCL signal latches the value on the SDA pin. MTCH6301 employs clock stretching and this should be taken into account by the master controller. The maximum speed at which MTCH6301 can operate is 400 kbps. 6.2.3 INTERRUPT (INT) This pin is utilized by MTCH6301 to signal that data is available and that the master controller should invoke a master read. INT is an active-high pin and is held low during all other activities. Note: 6.2.4 If the device is not read within 25 ms of asserting the INT pin, a timeout will occur and data will no longer be available. DEVICE ADDRESSING The MTCH6301 7-bit base address is 0x25 and is not configurable by the user. Every transmission must be prefixed with this address, as well as a bit signifying whether the transmission is a master write (`0') or master read (`1'). After appending this Read/Write bit to the base address, this first byte becomes either 0x4A (write) or 0x4B (read). DS40001663B-page 12 2012-2014 Microchip Technology Inc. MTCH6301 6.3 Generic Read/Write Protocol 6.3.1 MASTER READ WAVEFORM FIGURE 6-1: MASTER READ WAVEFORM 2 1 (DATA) SDA 0x25 R S [NUM_BYTES] 1 ACK D7 D6 D5 D4 D3 D2 D1 D0 [DATA0] ACK D7 D6 D5 D4 D3 D2 D1 D0 [DATAn] ACK D7 D6 D5 D4 D3 D2 D1 D0 NACK P SCL INT 4 3 Start Stop Note 1: The first byte read from the device denotes the number of bytes to follow. 2: The last byte read from the device must be followed by a nACK (`1') from the host controller. All other bytes should be followed with ACK (`0'). 3: INT will be set low within 10 uS of a correct I2CTM address match. 4: All data (DATA0 - DATAn) must be read at once within a single I2CTM transaction, and Restart conditions are not supported. 6.3.2 MASTER WRITE WAVEFORM FIGURE 6-2: MASTER WRITE WAVEFORM 2 (DATA) SDA 0x25 S [NUM_BYTES] 0 W 1 ACK D7 D6 D5 D4 D3 D2 D1 D0 [DATA0] ACK D7 D6 D5 D4 D3 D2 D1 D0 [DATAn] ACK D7 D6 D5 D4 D3 D2 D1 D0 ACK P SCL INT Start 3 Stop Note 1: If the device is sleeping, it will ACK the address byte, but will not ACK the first byte of the transmission until it is awake. See Section 9. "Send Enable Touch command (0x00)." for details. 2: The first byte written to the controller denotes the number of bytes to follow. 3: Although it is not required all data be written in a single I2CTM transaction, it is recommended to reduce the chance of a timeout occurring. 2012-2014 Microchip Technology Inc. DS40001663B-page 13 MTCH6301 6.3.3 TOUCH PACKET PROTOCOL Fully-processed touch coordinates will be sent out as they are processed by MTCH6301. Since it is a slave device, the INT pin will be asserted whenever one of these packets is ready for transmission, requiring the master to initiate a Read command. In other words, no Write command is necessary before reading one of these packets. FIGURE 6-3: EXAMPLE TOUCH PACKET WAVEFORM INT SCL DATA 0x4B 0x05 0x81 0x7D 0x05 0x6A 0x01 Start Stop Touch ID0, Pen Down 0x4B Byte Bit 7 D0 1 D1 0 D2 0 D3 0 D4 0 Bit 6 0x05 Bit 5 X: 765 [D1] [D0] Bit 4 [D2] Bit 3 TOUCHID<3:0> Y: 234 [D3] [D4] Bit 2 Bit 1 Bit 0 TCH (0) 0 PEN X<6:0> 0 0 0 0 X<11:7> Y<6:0> TOUCHID: Touch ID (0-9) PEN: Pen State Y<11:7> 0 = Pen Up 1 = Pen Down X: X Coordinate of touch Y: Y Coordinate of touch TCH: Always `0'; it denotes a touch packet (vs. gesture) DS40001663B-page 14 2012-2014 Microchip Technology Inc. MTCH6301 6.4 Gesture Protocol Similar to touch packets, the following packet is transmitted whenever a gesture is performed on the sensor. This feature can be enabled via the Comm Packet CFG register (see Section 7.0 "Memory Map"). Note 1: Gestures are not enabled by default. 2: For any hold gestures, packets are continuously sent until the gesture is no longer being held. FIGURE 6-4: GESTURE PACKET WAVEFORM INT SCL DATA 0x4B 0x02 0x84 0x61 Start Stop Gesture from ID1 0x4B Byte Bit 7 D0 1 D1 0 Bit 6 Bit 4 [D1] [D0] Bit 3 TOUCHID<3:0> Bit 2 Bit 1 Bit 0 GEST -1 0 0 GESTURE<6:0> TOUCHID: Touch ID (0-9) GESTURE: Gesture ID GEST: Bit 5 0x02 Swipe Left 0x10 Single Tap 0x20 Double Tap 0x11 Single Tap (hold) 0x31 Up Swipe 0x32 Up Swipe (hold) 0x41 Right Swipe 0x42 Right Swipe (hold) 0x51 Down Swipe 0x52 Down Swipe (hold) 0x61 Left Swipe 0x62 Left Swipe (hold) Always `1'; it denotes a gesture packet (vs. touch) 2012-2014 Microchip Technology Inc. DS40001663B-page 15 MTCH6301 6.5 Command Protocol Bidirectional reading/writing Figure 6-5. communication protocol (for configuration data) is shown in FIGURE 6-5: COMMAND PROTOCOL I2CTM Data Command (I2C TM Write) 0x4A 0x4B NUM0 Response TM Read) [D0] ... [Dn] RES CMD [D0] INT I2CTM Data (I2C 0x55 NUM CMD 0x55 NUM1 ... [Dn] INT NUM: Number of bytes to follow (true for NUM, NUM0, NUM1). CMD: Command sent/ responded to RES: Status result of command: 0x00 = Success 0x80 = Parameter out of range 0xFE = Timeout (not enough bytes received) 0xFF = Unrecognized command 0xFD = Invalid parameter 0xFC = Missing or extra parameter D0 - Dn: 6.6 Data associated with command Full Command Set A complete listing of MTCH6301 commands is shown in Table 6-1. Any commands which contain additional data bytes, either sent or received, are shown alongside an example data stream in the following sections. 6.6.1 OVERVIEW TABLE 6-1: COMMAND SET CMD ID 0x00 Name Description Enable Touch Enable Touch functionality 0x01 Disable Touch Disable Touch functionality 0x14 Scan Baseline Instruct controller to scan for new sensor baseline immediately 0x15 Write Register Write data to specified register 0x16 Read Register Read data from specified register 0x17 Write NVRAM Write all current register values to NVRAM 0x18 Software Sleep Instruct controller to enter Sleep mode 0x19 Erase NVRAM Erase the contents of the nonvolatile RAM section 0x1A Manufacturing Test Perform manufacturing tests on all sensor I/O channels 0x83 Device ID Retrieve device ID/version DS40001663B-page 16 2012-2014 Microchip Technology Inc. MTCH6301 6.6.2 WRITE REGISTER/ READ REGISTER It writes or reads to a single register. Please note that all registers are volatile, and any modified data will be lost on power-down. To store the current register configuration permanently, the Write NVRAM command should be used. FIGURE 6-6: WRITE REGISTER COMMAND Command (I2CTM Write) 0x4A 0x55 0x04 0x15 [D0] [D1] 0x4B 0x04 0x55 0x02 0x00 0x15 [D2] INT Response (I2CTM Read) INT D0 = Index Location D1 = Offset Location D2 = Value to Write to Specified Register FIGURE 6-7: READ REGISTER COMMAND Command (I2CTM Write) 0x4A 0x55 0x03 0x15 [D0] [D1] 0x4B 0x05 0x55 0x03 0x00 0x16 INT Response (I2CTM Read) [D2] INT D0 = Index Location D1 = Offset Location D2 = Read Value at Specified Register 2012-2014 Microchip Technology Inc. DS40001663B-page 17 MTCH6301 6.6.3 MANUFACTURING TEST This test performs the following checks on all mapped sensor pins: 1. 2. 3. Short to VDD Short to GND Pin-to-pin short. If an I/O error is discovered, bits for the pins in question will be set in the TX Short Status and RX Short Status registers. Please note that: 1. 2. The RX7/RX8 pins will always report an error. If the sensor has more than 16 TX channels, then channels 17 and 18 will never report an error. FIGURE 6-8: MANUFACTURING TEST Command (I 2 C TM Write) 0x4A 0x55 0x01 0x1A 0x4B 0x05 0x55 0x03 INT Response (I 2 C TM Read) 0x00 0x1A [D0] INT D0 = Result; 0 = success, 1 = I/O error 6.6.4 DEVICE ID It allows the host to read the device ID. FIGURE 6-9: Command (I2CTM Write) DEVICE ID 0x4A 0x55 0x01 0x83 0x4B 0x05 0x55 0x03 INT Response (I2CTM Read) 0x00 0x83 0X00 0X10 0X02 0X05 INT DS40001663B-page 18 2012-2014 Microchip Technology Inc. MTCH6301 6.6.5 TYPICAL I2C COMMAND TRANSMISSION Figure 6-10 depicts the master controller reading from RAM location 0x01, to determine the number of RX channels the controller is configured to use (0x0C or 12). FIGURE 6-10: I2CTM COMMAND READ AND WRITE Master Write INT SDA SCL DATA 4A 55 03 16 00 01 Master Read (Controller Response) Start Stop INT SDA SCL DATA 4B 05 55 03 00 16 0C Start 6.7 Wake on I2C The MTCH6301 is capable of waking up upon receiving an I2C command from the host. Please note that since wake-up time can take up to 350 s, the controller must resend any I2C bytes that were not acknowledged (ACK) before continuing the transmission. Since the controller will wake up upon a correct I2C address match, it does not matter which command is sent. For simplicity, the Enable Touch command is recommended. Stop 6.8 RESET Pin Behavior The MTCH6301 can be reset by driving the RESET pin low. When released, the device will assert the INT pin until it has finished initialization routines. During this time, any communication to the I2C address (0x25) will result in a nACK. FIGURE 6-11: INT BEHAVIOR AFTER RESET tRST RESET INT 80 ms < tRST < 100 ms 2012-2014 Microchip Technology Inc. DS40001663B-page 19 MTCH6301 6.9 Recommended Start-up Sequence For ease of use, it is recommended that all custom parameters be stored in NVRAM at the time of production (or on first power-on) for the lifetime of the chip. Once this has been completed, the start-up procedure for the rest of the product's life should be as follows: 1. 2. 3. 4. 5. Prepare I2C master/host controller; initialize any components of the system that depend upon the MTCH6301 output. Set RESET low for > 5 s. Set RESET high. Wait for low state on INT. If desired, check for correct device operation by using the Device ID command. Note: If the application is designed to use the default parameters, the above start-up procedure should be used. If the application is such that using the NVRAM to store custom parameters isn't possible, the following start-up procedure is recommended: 1. 2. 3. 4. 5. 6. 7. 8. 9. Prepare I2C master/host controller; initialize any components of the system that depend upon the MTCH6301 output. Set RESET low for > 5 s. Set RESET high. Wait for low state on INT. If desired, check for correct device operation by using the Device ID command. Send Disable Touch command (0x01). Write all desired parameters to the device. Send Scan Baseline command (0x14). Send Enable Touch command (0x00). DS40001663B-page 20 2012-2014 Microchip Technology Inc. 2012-2014 Microchip Technology Inc. 7.0 MEMORY MAP TABLE 7-1: Group General Sensor Map Self Mutual Decoding MTCH6301 MEMORY MAP Index Byte 0x00 Offset Byte Register Name Size (Bytes) Description Data Range Default Value 0x01 RX Channels 1 Number of RX Sensor Channels 3-13 12 0x02 TX Channels 1 Number of TX Sensor Channels 3-18 9 0x04 RX Scaling <7:0> 2 RX Scaling Coefficient 3640-21845 5461 0x05 RX Scaling <15:8> 0x06 TX Scaling <7:0> 2 TX Scaling Coefficient 3640-21845 7281 0x07 TX Scaling <15:8> 0x01 0x00-0x0C RX Pin Map 13 RX Pin Map Array 0-12 Section 5.6.1 "RX/TX Pin Map" 0x02 0x00-0x12 TX Pin Map 18 TX Pin Map Array 0-34 Section 5.6.1 "RX/TX Pin Map" 0x10 0x20 0x30 0x00 Self Scan Time 1 Number of self readings to sum per electrode 0x01 Self Threshold 1 Threshold at which a touch may be present 1-30 5 10-150 40 Mutual Scan Time 1 Number of mutual readings to sum per node 1-30 9 Mutual Threshold 1 Threshold at which a touch may be present 10-150 40 0x00 Flip State 1 This determines the orientation of the sensor with respect to the coordinate output 0b000-0b111 0b001 0x01 Number of Averages 1 Number of previous touch coordinates to average with current position coordinate (smoothing filter) 1-16 8 0x04 Minimum Touch Distance 1 Minimum distance (interpolated coordinates) allowed between two touch locations before suppressing the weaker touch. 0-255 150 0x05 Pen Down Timer 1 Number of successive sensor scans identifying a touch required prior to transmitting touch data 0-10 3 0x06 Pen Up Timer 1 Number of successive sensor scans without detecting a touch prior to a touch up packet being sent 0-10 3 0x07 Touch Suppression Value 1 The maximum number of touch points to transmit. Note that ten touch IDs are still analyzed and tracked, just not reported; 0 = Disabled 0-10 0 MTCH6301 DS40001663B-page 21 0x00 0x01 Group Gestures Configuration 2012-2014 Microchip Technology Inc. I/O Status MTCH6301 MEMORY MAP (CONTINUED) Index Byte 0x50 0xF0 0xF1 Offset Byte Register Name Size (Bytes) Description Data Range Default Value 0x00 RX Swipe Length 1 Minimum swipe distance in the RX direction before gesture is recognized 10-255 160 0x01 TX Swipe Length 1 Minimum swipe distance in the TX direction before gesture is recognized 10-255 150 0x02 Swipe Boundary 1 The distance (in interpolated positions) a swipe can move, in the direction opposite to the direction being swiped, before the gesture is canceled. 0-255 150 0x03 Swipe Hold Threshold 1 The maximum distance (in interpolated positions) a swipe-and-hold gesture can move before the gesture is canceled 0-255 70 0x04 Swipe Time <7:0> 2 200 Swipe Time <15:8> The maximum amount of time (in ms) the user has to perform a swipe after initial pen down 0-65535 0x05 0x06 Tap Time <7:0> 2 500 Tap Time <15:8> The maximum amount of time (in ms) the user has to perform a click after initial pen down 0-65535 0x07 0x08 Tap Threshold 1 The maximum distance (in interpolated positions) a tap gesture can move before it is no longer recognized as a tap 1-255 120 0x09 Minimum Swipe Velocity 1 The minimum velocity a swipe must maintain to be a swipe gesture. Values below this will either cancel the gesture (if touch removed) or move to the swipe-and-hold state (if touch is still present) 1-50 3 2 The maximum amount of time allowed between the two taps of a double tap (in ms) 50-1000 350 0x0A Double Tap Time <7:0> 0x0B Double Tap Time <15:8> 0x0C Gesture Edge Keep-out 1 This value determines the width of a keep-out barrier around the edge of the active touch area. This helps remove edge-effect issues. 0-255 128 0x00 SLP <7:0> 4 Duration (in ms) without touch activity before the controller enters Sleep state 0-4,294,967,295 8000 1 Touch Packet Configuration - Enabled: 0x81, Disabled: 0x01 0x81, 0x01 0x81 0x01 SLP <15:8> 0x02 SLP <23:16> 0x03 SLP <31:24> 0x07 Touch Packet CFG 0x09 Gesture Packet CFG 1 Gesture Packet Configuration - Enabled: 0x81, Disabled: 0x01 0x81, 0x01 0x01 0x0A Status Packet CFG 1 Status Packet Configuration - Enabled: 0x81, Disabled: 0x01 0x81, 0x01 0x01 2 Identifies which TX pins are shorted after using Manufacturing Test command - read only 0x00-0xFF 0x00 2 Identifies which RX pins are shorted after using Manufacturing Test command - read only 0x00-0xFF 0x00 0x02 TX Short Status <7:0> 0x03 TX Short Status <15:8> 0x06 RX Short Status <7:0> 0x07 RX Short Status <15:8> MTCH6301 DS40001663B-page 22 TABLE 7-1: MTCH6301 8.0 SPECIAL FEATURES 8.1 Gestures Single-finger gestures are a fast and intuitive way to navigate a feature-rich human-machine interface. MTCH6301 supports 11 single finger gestures natively, without requiring interaction from the master processor. Tuning may be required depending on the layout of the sensor, the time duration and length of activation required for your gesture-supported application. The most common defaults are already preloaded and should serve most applications. These parameters and their descriptions are available in the "Gestures" section of the memory map (see Section 7.0 "Memory Map"). Note: Gestures are not enabled by default, and must be enabled via the gesture packet configuration byte in RAM (see Section 7.0 "Memory Map"). If your application requires only gesture functionality, and does not require touch coordinates, the touch packet configuration byte (see Section 7.0 "Memory Map") can be used to turn off all touch coordinate data. TABLE 8-1: Icon GESTURE TYPES Gesture Type Tap (Click) Icon Gesture Type Tap and Hold Double Tap (Double Click) Swipe Down Swipe Down and Hold Swipe Up Swipe Up and Hold Swipe Right Swipe Right and Hold Swipe Left Swipe Left and Hold 2012-2014 Microchip Technology Inc. DS40001663B-page 23 MTCH6301 8.2 Sleep Sleep functionality is enabled by default, and follows the behavior shown in Figure 8-1. This functionality can be modified via the SLP register (see Section 7.0 "Memory Map"). The SLP register is the time (in ms) without touch activity before controller enters Sleep mode. FIGURE 8-1: SLEEP FUNCTIONALITY [Normal Full Decode of Sensor] Touch? Yes No Transmit Touch No touch for No [SLP] ms? Yes Sleep for ms No Wake up; Touch exists? 8.3 Yes Nonvolatile RAM (NVRAM) Permanent storage of parameters that have been modified can be achieved using the internal NVRAM. This NVRAM is not meant for continuous writing, as it has a low write-cycle limit of 20,000. Upon start-up, the NVRAM's data (if present) is loaded into the controller. If no data is available in the NVRAM, the device defaults are loaded instead. Please note that RAM parameters cannot be individually written to the NVRAM. They are all written with only one command. See the applicable command within the command set for more details. (Section 6.6 "Full Command Set") DS40001663B-page 24 2012-2014 Microchip Technology Inc. MTCH6301 8.4 Touch Performance Using default acquisition parameters, Figure 8-2 shows the relationship of single-touch report rate with regard to sensor size. FIGURE 8-2: REPORT RATE VS SENSOR SIZE Report Rate (PPS) vs Sensor Size (Channels) 400 300 200 100 0 2x2 2012-2014 Microchip Technology Inc. 4x4 6x6 8x8 12x9 13x15 DS40001663B-page 25 MTCH6301 9.0 ELECTRICAL CHARACTERISTICS This section provides an overview of the MTCH6301 electrical characteristics. Additional information will be provided in future revisions of this document as it becomes available. Absolute Maximum Ratings() 9.1 Ambient temperature under bias ........................................................................................................ -40C to +85C Storage temperature ........................................................................................................................ -65C to +150C Voltage on pins with respect to VSS on VDD pin ................................................................................................................................. -0.3V to +4.0V on all other pins ............................................................................................................... 0.3V to (VDD + 0.3V) Maximum current out of VSS pin .......................................................................................................................................300 mA into VDD pin(s) ..................................................................................................................................... 300 mA sunk by all ports .................................................................................................................................. 200 mA sourced by all ports .............................................................................................................................200 mA Maximum output current sunk by any I/O pin ................................................................................................................................ 15 mA sourced by any I/O pin .......................................................................................................................... 15 mA Note: This device is sensitive to ESD damage and must be handled appropriately. Failure to properly handle and protect the device in an application may cause partial to complete failure of the device. NOTICE: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure above maximum rating conditions for extended periods may affect device reliability. 9.2 Standard Operating Conditions The standard operating conditions for any device are defined as: Operating Voltage: Operating Temperature: VDDMIN VDD VDDMAX TA_MIN TA TA_MAX VDD -- Operating Supply Voltage(1) MTCH6301 VDDMIN .................................................................................................................................... +2.4V VDDMAX .................................................................................................................................... +3.6V TA -- Operating Ambient Temperature Range Industrial Temperature TA_MIN ...................................................................................................................................... -40C TA_MAX .................................................................................................................................. +105C Note 1: Maximum current rating requires even load distribution across I/O pins. Maximum current rating may be limited by the device package power dissipation characterizations. See Table 9-1 to calculate device specifications. DS40001663B-page 26 2012-2014 Microchip Technology Inc. MTCH6301 9.3 DC Characteristics TABLE 9-1: THERMAL OPERATING CONDITIONS Symbol Rating Min. Typ. Max. Units TJ Operating Junction Temperature Range -40 -- +125 C TA Operating Ambient Temperature Range -40 -- +85 C PD Power Dissipation: Internal Chip Power Dissipation: PINT = VDD x (IDD-? IOH) I/O Pin Power Dissipation: PI/O = ? (({VDD - VOH} x IOH) + ? (VOLx IOL)) PINT + PI/O W Maximum Allowed Power Dissipation (TJ-TA)/JA W PDMAX TABLE 9-2: THERMAL PACKAGING CHARACTERISTICS Symbol Characteristics Typ. Max. Units JA Package Thermal Resistance, 44-pin QFN 32 -- C/W JA Package Thermal Resistance, 44-pin TQFP 45 -- C/W TABLE 9-3: OPERATING VOLTAGE AND CURRENT Symbol Min. Typ. Max. Units VDD Supply Voltage 2.3 -- 3.6 V -- VBOR BOR Event on VDD transition high-to-low 2.0 -- 2.3 V -- IDD Operating Current -- 19 25 mA Note 1 ISLP Sleep Current -- 200 245 A Note 1, 2 Note 1: 2: Symbol VIH VOL VOH VBOR Note 1: 2: Conditions Parameter is characterized, but not tested. Device configured with default parameters. TABLE 9-4: VIL Characteristics PIN INPUT AND OUTPUT SPECIFICATIONS Characteristic / Pins Min. Max. Units Conditions RX, TX VSS 0.15 VDD V -- SDA, SCL VSS 0.3 VDD V Note 1 RX, TX 0.65 VDD VDD V Note 1 SDA, SCL 0.65 VDD VDD V Note 1 INT, RX, TX VSS 0.4 V IOL 10 mA, VDD = 3.3V SDA, SCL VSS 0.4 V IOL 10 mA, VDD = 3.3V(1,2) INT, RX, TX 2.4 VDD V IOH 10 mA, VDD = 3.3V SDA, SCL -- -- V Note 2 Brown-out Event on VDD Transition high-to-low 2.0 2.3 V Min. not tested Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage Parameter is characterized, but not tested. Open drain structure. 2012-2014 Microchip Technology Inc. DS40001663B-page 27 MTCH6301 9.4 AC Characteristics and Timing Parameters TABLE 9-5: RESET TIMING Symbol TPU TBOR Note 1: 2: Characteristic Min. Typ. Max. Units Conditions Power-up Period -- 400 -- s Notes 1, 2 Brown-out Pulse Width (Low) -- 1 -- s Note 1 Parameter is characterized, but not tested. Power-up period is for core operation to begin and it does not reflect response time to a touch. FIGURE 9-1: I2CTM BUS START/STOP BIT TIMING CHARACTERISTICS FIGURE 9-2: I2CTM BUS DATA TIMING CHARACTERISTICS DS40001663B-page 28 2012-2014 Microchip Technology Inc. MTCH6301 TABLE 9-6: I2CTM BUS DATA TIMING REQUIREMENTS Parameter Symbol Number Characteristic Min. TLO:SCL Clock Low Time 100 kHz mode 400 kHz mode 1.3 -- s IS2 THI:SCL Clock High Time 100 kHz mode 4.0 -- s 400 kHz mode 0.6 -- s IS3 TF:SCL SDA and SCL Fall Time 100 kHz mode -- 300 ns 400 kHz mode 20+0.1 CB 300 ns IS4 TR:SCL SDA and SCL Rise Time 100 kHz mode 1000 ns 300 ns IS5 TSU:DAT Data Input Setup Time 100 kHz mode 250 -- ns 400 kHz mode 100 -- ns IS6 THD:DAT Data Input Hold Time 100 kHz mode 0 -- ns 400 kHz mode 0 0.9 s IS7 TSU:STA Start Condition Setup Time 100 kHz mode 4700 -- ns 400 kHz mode 600 -- ns IS8 THD:STA Start Condition Hold Time 100 kHz mode 4000 -- ns 400 kHz mode 600 -- ns After this period, the first clock pulse is generated IS9 TSU:STO Stop Condition Setup Time 100 kHz mode 4000 -- ns -- 400 kHz mode 600 -- ns IS10 THD:STO Stop Condition Hold Time 100 kHz mode 4000 -- ns 400 kHz mode 600 -- ns IS11 TAA:SCL Output Valid from 100 kHz mode Clock 400 kHz mode 0 3500 ns IS12 TBF:SDA Bus Free Time Note 1: CB -- 400 kHz mode 20+0.1 CB -- s Conditions IS1 -- 4.7 Max. Units -- -- -- -- -- -- Only relevant for repeated Start condition -- -- 0 1000 ns 100 kHz mode 4.7 -- s 400 kHz mode 1.3 -- s Time bus must be free before new transmission can start -- 400 pF Note 1 SCL, SDC Capacitive Loading Parameter is characterized, but not tested. 2012-2014 Microchip Technology Inc. DS40001663B-page 29 MTCH6301 10.0 ORDERING INFORMATION TABLE 10-1: ORDERING INFORMATION Part Number Pin Package Packing MTCH6301-I/PT 44 TQFP 10x10x1mm Tray MTCH6301-I/ML 44 QFN 8x8x0.9mm Tube MTCH6301T-I/PT 44 TQFP 10x10x1mm T/R MTCH6301T-I/ML 44 QFN 8x8x0.9mm T/R DS40001663B-page 30 2012-2014 Microchip Technology Inc. MTCH6301 11.0 PACKAGING INFORMATION 11.1 Package Marking Information 44-Lead QFN (8x8x0.9 mm) PIN 1 Example PIN 1 XXXXXXXXXXX XXXXXXXXXXX XXXXXXXXXXX YYWWNNN MTCH6301 -I/ML 1403017 44-Lead TQFP (10x10x1 mm) Example XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX YYWWNNN MTCH6301 e3 -I/PT 1403017 Legend: XX...X Y YY WW NNN e3 * Note: e3 Customer-specific information Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week `01') Alphanumeric traceability code Pb-free JEDEC(R) designator for Matte Tin (Sn) This package is Pb-free. The Pb-free JEDEC designator ( e3 ) can be found on the outer packaging for this package. In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. 2012-2014 Microchip Technology Inc. DS40001663B-page 31 MTCH6301 11.2 Package Details DS40001663B-page 32 2012-2014 Microchip Technology Inc. MTCH6301 2012-2014 Microchip Technology Inc. DS40001663B-page 33 MTCH6301 DS40001663B-page 34 2012-2014 Microchip Technology Inc. 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DS40001663B-page 35 MTCH6301 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS40001663B-page 36 2012-2014 Microchip Technology Inc. MTCH6301 APPENDIX A: DATA SHEET REVISION HISTORY Revision A (2012) Initial release of the document. Revision B (03/2014) Updated the Device Overview page; Added Chapter 4; Updated Chapters 1 through 9 and Chapter 11; Other minor corrections. 2012-2014 Microchip Technology Inc. DS40001663B-page 37 MTCH6301 THE MICROCHIP WEB SITE CUSTOMER SUPPORT Microchip provides online support via our WWW site at www.microchip.com. This web site is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the web site contains the following information: Users of Microchip products can receive assistance through several channels: * Product Support - Data sheets and errata, application notes and sample programs, design resources, user's guides and hardware support documents, latest software releases and archived software * General Technical Support - Frequently Asked Questions (FAQ), technical support requests, online discussion groups, Microchip consultant program member listing * Business of Microchip - Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representatives * * * * Distributor or Representative Local Sales Office Field Application Engineer (FAE) Technical Support Customers should contact their distributor, representative or Field Application Engineer (FAE) for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document. Technical support is available through the web site at: http://microchip.com/support CUSTOMER CHANGE NOTIFICATION SERVICE Microchip's customer notification service helps keep customers current on Microchip products. Subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest. To register, access the Microchip web site at www.microchip.com. Under "Support", click on "Customer Change Notification" and follow the registration instructions. DS40001663B-page 38 2012-2014 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices: * Microchip products meet the specification contained in their particular Microchip Data Sheet. * Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. * There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. * Microchip is willing to work with the customer who is concerned about the integrity of their code. * Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable." Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip's code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, dsPIC, FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MTP, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries. Analog-for-the-Digital Age, Application Maestro, BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O, Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA and Z-Scale are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. GestIC and ULPP are registered trademarks of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies. (c) 2013, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. ISBN: 978-1-63276-011-1 QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV == ISO/TS 16949 == 2012-2014 Microchip Technology Inc. Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company's quality system processes and procedures are for its PIC(R) MCUs and dsPIC(R) DSCs, KEELOQ(R) code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip's quality system for the design and manufacture of development systems is ISO 9001:2000 certified. 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