FUJITSU MICROELECTRONICS DATA SHEET DS04-27408-1E ASSP BIPOLAR POWER-VOLTAGE MONITORING IC WITH WATCHDOG TIMER MB3793-28A DESCRIPTION The MB3793 is an integrated circuit to monitor power voltage; it incorporates a watchdog timer. A reset signal is output when the power is cut or falls abruptly. When the power recovers normally after resetting, a power-on reset signal is output to microprocessor units (MPUs). An internal watchdog timer with two inputs for system operation diagnosis can provide a fail-safe function for various application systems. Model No. Marking Code Detection voltage MB3793-28A 3793AR 2.8 V FEATURES * * * * * * Precise detection of power voltage fall: 2.5% Detection voltage with hysteresis Low power dispersion: ICC = 41 A (Typ) Internal dual-input watchdog timer Watchdog timer halt function Independently-set watchdog and reset times APPLICATION * Arcade Amusement etc. Copyright(c)2009 FUJITSU MICROELECTRONICS LIMITED All rights reserved 2009.12 MB3793-28A PIN ASSIGNMENT (TOP VIEW) RESET 1 8 CK1 CTW 2 7 CK2 CTP 3 6 INH GND 4 5 VCC (FPT-8P-M02) PIN DESCRIPTION 2 Pin No. Symbol Description 1 RESET 2 CTW Sets watchdog timer monitoring time pin 3 CTP Sets power-on reset hold time pin 4 GND Ground pin 5 VCC Power supply pin 6 INH This pin forces the watchdog timer on/off. When this pin is High level, the watchdog timer is stopped. 7 CK2 Inputs clock 2 pin 8 CK1 Inputs clock 1 pin Outputs reset pin DS04-27408-1E MB3793-28A BLOCK DIAGRAM To VCC of all blocks . 3 A I1 = . 5 VCC I2 .=. 30 A CTP 3 . R1 = . 315 k Logic circuit RESET 1 Output circuit INH 6 Comp.S CTW 2 Watchdog timer - Reference voltage generator VS + Pulse generator 1 . 1.24 V VREF = . CK1 8 R2 .=. 240 k Pulse generator 2 CK2 7 DS04-27408-1E To GND of all blocks 4 GND 3 MB3793-28A BLOCK FUNCTIONS 1. Comp. S Comp. S is a comparator with hysteresis to compare the reference voltage with a voltage (VS) that is the result of dividing the power voltage (VCC) by resistors R1 and R2. When VS falls below 1.24 V, a reset signal is output. This function enables the MB3793 to detect an abnormality within 1 s when the power is cut or falls abruptly. 2. Output circuit The output circuit has a comparator to control the reset signal (RESET) output. When the voltage at the CTP pin for setting the power-on reset hold time exceeds the threshold voltage, resetting is canceled. Since the reset (RESET) output buffer has the CMOS organization, no pull-up resistor is needed. 3. Pulse generator The pulse generator generates pulses when the voltage at the CK1 and CK2 input clock pins changes from Low level to High level (positive-edge trigger) and exceeds the threshold voltage; it sends the clock signal to the watchdog timer. 4. Watchdog timer The watchdog timer can monitor two clock pulses. Short-circuit the CK1 and CK2 clock pins to monitor a single clock pulse. 5. Logic circuit Logic circuit controls charging and discharging of the power-on reset hold time setting capacity (CTP) on a signal of Comp.S and Watchdog timer. 4 DS04-27408-1E MB3793-28A ABSOLUTE MAXIMUM RATINGS Parameter Symbol Conditions VCC CK1 VCK1 CK2 VCK2 INH VINH VOL VOH Reset output current Power dissipation Power supply voltage* Input voltage* Reset output voltage* RESET Storage temperature Rating Unit Min Max -0.3 +7 V -0.3 VCC + 0.3 ( +7) V -0.3 VCC + 0.3 ( +7) V IOL IOH -10 +10 mA PD Ta +85 C 200 mW Tstg -55 +125 C * : The voltage is based on the ground voltage (0 V). WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings. RECOMMENDED OPERATING CONDITIONS Parameter Symbol Conditions VCC Value Unit Min Typ Max 1.2 3.3 4.0 IOL 0 -- +5 IOH -5 -- 0 Power-on reset hold time setting capacity CTP 0.001 0.1 10 F Watchdog-timer monitoring time setting capacity* CTW 0.001 0.01 1 F Operating ambient temperature Ta -40 +25 +85 C Power supply voltage Reset (RESET) output current V mA * : The watchdog timer monitor time range depends on the rating of the setting capacitor. WARNING: The recommended operating conditions are required in order to ensure the normal operation of the semiconductor device. All of the device's electrical characteristics are warranted when the device is operated within these ranges. Always use semiconductor devices within their recommended operating condition ranges. Operation outside these ranges may adversely affect reliability and could result in device failure. No warranty is made with respect to uses, operating conditions, or combinations not represented on the data sheet. Users considering application outside the listed conditions are advised to contact their representatives beforehand. DS04-27408-1E 5 MB3793-28A ELECTRICAL CHARACTERISTICS 1. DC Characteristics (VCC = +3.3 V, Ta = +25C) Parameter Power current Symbol Conditions Detection voltage hysteresis difference CK input threshold voltage CK input hysteresis INH input voltage Input current (CK1,CK2,INH) Reset output voltage Reset-output minimum power voltage Unit Min Typ Max 41 55 Ta = +25C 2.73 2.80 2.87 Ta = -40 to +85C 2.69* 2.80 2.91* Ta = +25C 2.80 2.87 2.94 Ta = -40 to +85C 2.76* 2.87 2.98* 25 70 100 mV ICC1 After exit from reset VSL VCC falling VSH VCC rising VSHYS VSH - VSL Detection voltage Value A V V VCIH 0.7* 1.3 1.9 V VCIL 0.5 1.0 1.5* V VCHYS 0.1* 0.3 0.6* V VIIH 2.2 VCC V VIIL 0 0.8 V IIH VIH = VCC 0 1.0 A IIL VIL = 0 V -1.0 0 A VOH IRESET = -3 mA 2.8 3.1 V VOL IRESET = +3 mA 0.12 0.4 V VCCL IRESET = +50 A 0.8 1.2 V * : This parameter is guaranteed by design, which is not supported by a final test. 6 DS04-27408-1E MB3793-28A 2. AC Characteristics (VCC = +3.3 V, Ta = +25C) Parameter Symbol Conditions Value Min Typ Max Unit Power-on reset hold time tPR CTP = 0.1 F 30 75 120 ms Watchdog timer monitoring time tWD CTW = 0.01 F CTP = 0.1 F 8 16 24 ms Watchdog timer reset time tWR CTP = 0.1 F 2 5.5 9 ms CK input pulse width tCKW 500 ns CK input pulse cycle tCKT 20 s Reset (RESET) output transition time Rising tr* CL = 50 pF 500 ns Falling tf* CL = 50 pF 500 ns *: The voltage range is 10% to 90% at testing the reset output transition time. DS04-27408-1E 7 MB3793-28A TIMING DIAGRAM 1. Basic operation (Positive clock pulse) VSH VSL VCC tCKW CK1 tCKT CK2 INH Vth CTP VH CTW VL RESET (1) (2) 8 tWD tPR (3) (4)(5) (5) tPR tWR (6) (7) (8) (9) (10) (11) (12) (13) DS04-27408-1E MB3793-28A 2. Basic operation (Negative clock pulse) VSH VSL VCC tCKW CK1 tCKT CK2 INH Vth CTP VH CTW VL RESET tPR (1) (2) DS04-27408-1E tWD (3) (4)(5) (5) tPR tWR (6) (7) (8) (9) (10) (11) (12) (13) 9 MB3793-28A 3. Single-clock input monitoring (Positive clock pulse) tCKW CK1 CK2 tCKT Vth CTP VH CTW VL RESET tWD tWR Note : The MB3793 can monitor only one clock. The MB3793 checks the clock signal at every other input pulse. Therefore, set watchdog timer monitor time tWD to the time that allows the MB3793 to monitor the period twice as long as the input clock pulse. 10 DS04-27408-1E MB3793-28A 4. Inhibition operation (Positive clock pulse) VSH VSL VCC tCKW CK1 tCKT CK2 INH Vth CTP VH CTW VL RESET tPR (1) (2) DS04-27408-1E tWD (3) (4)(5) (5) tPR tWR (6) (7) (11) (8) (9) (10) (12) (13) 11 MB3793-28A 5. Clock pulse input supplementation (Positive clock pulse) tCKT tCKW *1 CK1 *2 CK2 VH CTW VL Note : The MB3793 watchdog timer monitors Clock1 (CK1) and Clock2 (CK2) pulses alternately. When a CK2 pulse is detected after detecting a CK1 pulse, the monitoring time setting capacity (CTW) switches to charging from discharging. When two consecutive pulses occur on one side of this alternation before switching, the second pulse is ignored. In the above figure, pulse *1 and *2 are ignored. 12 DS04-27408-1E MB3793-28A OPERATION SEQUENCE 1. Positive clock pulse input Refer to "1. Basic operation (positive clock pulse)" under " TIMING DIAGRAM". 2. Negative clock pulse input Refer to "2. Basic operation (negative clock pulse)" under " TIMING DIAGRAM". The MB3793 operates in the same way whether it inputs positive or negative pulses. 3. Single-clock input monitoring To use the MB3793 while monitoring only one clock, connect clock pins CK1 and CK2. Although the MB3793 operates basically in the same way as when monitoring two clocks, it monitors the clock signal at every other input pulse. Refer to "3. Single-clock input monitoring (positive clock pulse)" under " TIMING DIAGRAM". 4. Description of Operations The numbers given to the following items correspond to numbers (1) to (13) used in " TIMING DIAGRAM". (1) The MB3793 outputs a reset signal when the supply voltage (VCC) reaches about 0.8 V (VCCL) (2) If VCC reaches or exceeds the rise-time detected voltage VSH, the MB3793 starts charging the power-on reset hold time setting capacitor CTP. At this time, the output remains in a reset state. The VSH value is 2.87 V (Typ) . (3) When CTP has been charged for a certain period of time TPR (until the CTP pin voltage exceeds the threshold voltage (Vth) after the start of charging), the MB3793 cancels the reset (setting the RESET pin to "H" level from "L" level). The Vth value is about 2.4 V with VCC = 3.3 V The power-on reset hold time tPR is set with the following equation: tPR (ms) .=. A x CTP (F) The value of A is about 750 with VCC = 3.3 V and about 700 with VCC = 3.0 V. The MB3793 also starts charging the watchdog timer monitor time setting capacitor (CTW). (4) When the voltage at the watchdog timer monitor time setting pin CTW reaches the "H" level threshold voltage VH, the CTW switches from the charge state to the discharge state. The value of VH is always about 1.24 V regardless of the detected voltage. (5) If the CK2 pin inputs a clock pulse (positive edge trigger) when the CTW is being discharged in the CK1-CK2 order or simultaneously, the CTW switches from the discharge state to the charge state. The MB3793 repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses with the system logic circuit operating normally. (6) If no clock pulse is fed to the CK1 or CK2 pin within the watchdog timer monitor time tWD due to some problem with the system logic circuit, the CTW pin is set to the "L" level threshold voltage VL or less and the MB3793 outputs a reset signal (setting the RESET pin to "L" level from "H" level). The value of VL is always about 0.24 V regardless of the detected voltage. The watchdog timer monitor time tWD is set with the following equation: tWD (ms) .=. B x CTW (F) + C x CTP (F) The value of B is hardly affected by the power supply voltage; it is about 1600 with VCC = 3.0 V to 3.3 V. The value of C is 0. For this reason: tWD (ms) .=. B x CTW (F) DS04-27408-1E 13 MB3793-28A (7) When a certain period of time tWR has passed (until the CTP pin voltage reaches or exceeds Vth again after recharging the CTP), the MB3793 cancels the reset signal and starts operating the watchdog timer. The watchdog timer monitor reset time tWR is set with the following equation: tWR (ms) .=. D x CTP (F) The value of D is 55 with VCC = 3.3 V and about 50 with VCC = 3.0 V. The MB3793 repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses. If no clock pulse is input, the MB3793 repeats operations (6) and (7). (8) If VCC is lowered to the fall-time detected voltage (VSL) or less, the CTP pin voltage decreases and the MB3793 outputs a reset signal (setting the RESET pin to "L" level from "H" level). The value of VSL is 2.80 V (Typ) . (9) When VCC reaches or exceeds VSH again, the MB3793 starts charging the CTP. (10) When the CTP pin voltage reaches or exceeds Vth, the MB3793 cancels the reset and restarts operating the watchdog timer. It repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses. (11) Making the inhibit pin active (setting the INH pin to "H" from "L") forces the watchdog timer to stop operation. This stops only the watchdog timer, leaving the MB3793 monitoring VCC (operations (8) to (10)). The watchdog timer remains inactive unless the inhibit input is canceled. The inhibition (INH) pin must be connecting a voltage of more low impedance, to evade of the noise. (12) Canceling the inhibit input (setting the INH pin to "L" from "H") restarts the watchdog timer. (13) The reset signal is output when the power supply is turned off to set VCC to VSL or less. 1. Equation of time-setting capacitances (CTP and CTW) and set time . tPR [ms] =. A x CTP [F] . tWD [ms] =. B x CTW [F] + C x CTP [F] . . However, when CTP/CTW =. 10 or less, tWD [ms] =. B x CTW [F] . tWR [ms] =. D x CTP [F] Values of A, B, C, and D A B C D Remark 750 1600 0 55 VCC = 3.3 V 700 1600 0 50 VCC = 3.0 V Note: The width of value of tPR, tWD and tWR becomes the same ratio as width (Min, Max) of each specification value. 2. Example (when CTP = 0.1 F and CTW = 0.01 F) time (ms) 14 Symbol VCC = 3.3 V VCC = 3.0 V tPR 75 70 tWD 16 16 tWR 5.5 5 DS04-27408-1E MB3793-28A TYPICAL CHARACTERISTICS ICC - VCC characteristics VSH, VSL - Ta characteristics 3.1 MB3793 VINH VCC fCK= 1 kHz, Duty = 10% VL = 0 V/VH = VCC CTW = 0.01 F, CTP = 0.1 F 45 Detection voltage VSH and VSL (V) Power current ICC (A) 3.0 Watchdog timer monitoring (VINH = 0 V) 40 2.9 VSH 2.8 VSL 35 30 2.7 25 20 0 1.0 2.0 3.0 2.6 -40 4.0 Power voltage VCC (V) -20 0 +20 +40 +60 +80 +100 +120 Operating ambient temperature Ta (C) V RESET - I RESET characteristics (N-MOS side) V RESET - I RESET characteristics (P-MOS side) 3.3 600 at VCC = 3.3 V at VCC = 3.3 V 3.2 Ta = +85 C 500 3.1 Ta = -40 C Reset output voltage V RESET (V) Reset output voltage V RESET (V) 3.0 2.9 2.8 Ta = +25 C 2.7 2.6 2.5 400 Ta = +25 C 300 200 Ta = -40 C 100 Ta = +85 C 2.4 0 2.3 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 Reset output current I RESET (mA) 0 1 2 3 4 5 6 7 8 9 10 Reset output current I RESET(mA) (Continued) DS04-27408-1E 15 MB3793-28A tPR - Ta characteristics VRESET - VCC characteristics 160 7 Pull-up resistance : 100 k at VCC = 3.3 V 140 Power-on reset hold time tPR (ms) 6 Reset output voltage VRESET (V) 5 4 3 Ta = +85 C 2 120 100 80 60 40 Ta = +25 C 1 20 Ta = -40 C 0 0 1 2 3 0 -40 4 -20 0 +20 +40 +60 +80 +100 +120 Operating ambient temperature Ta (C) Power voltage VCC (V) tWR - Ta characteristics tWD - Ta characteristics 16 26 at VCC = 3.3 V 24 at VCC = 3.3 V 14 Watchdog timer monitoring time tWD (ms) 22 Watchdog timer reset time tWR (ms) 12 10 8 6 4 20 18 16 14 12 10 8 6 4 2 2 0 -40 -20 0 +20 +40 +60 +80 +100 +120 Operating ambient temperature Ta (C) 0 -40 -20 0 +20 +40 +60 +80 +100 +120 Operating ambient temperature Ta (C) (Continued) 16 DS04-27408-1E MB3793-28A (Continued) tPR - CTP characteristics tWR - CTP characteristics at VCC = 3.3 V 104 103 Watchdog timer reset time tWR (ms) Power-on reset hold time tPR (ms) at VCC = 3.3 V Ta = -40 C 102 Ta = +25 C 101 Ta = +85 C 1 10 -1 10-4 10-3 10-2 10-1 1 101 102 Power-on reset hold time setting capacitance CTP (F) 103 102 Ta = -40 C 101 1 Ta = +25 C 10-1 Ta = +85 C 10-2 10-4 10-3 10-2 10-1 1 101 102 Power-on reset hold time setting capacitance CTP (F) Watchdog timer monitoring time tWD (ms) tWD - CTW characteristics at VCC = 3.3 V 103 Ta = -40 C 102 101 Ta = +25 C 1 Ta = +85 C 10-1 10-5 10-4 10-3 10-2 10-1 1 101 Watchdog timer monitoring time setting capacitance CTW (F) DS04-27408-1E 17 MB3793-28A APPLICATION EXAMPLE 1. Supply voltage monitor and watchdog timer (1) 1-clock monitor VCC 5 VCC 2 CTW RESET 1 MB3793 RESET CTW* 3 CTP CTP* VCC CK1 8 Microprocessor CK 6 INH GND 4 CK2 7 GND GND * : Use a capacitor with less leakage current. (2) 2-clock monitor VCC 5 VCC 2 CTW RESET 1 RESET MB3793 CTW* CTP* 3 CTP CK1 8 GND RESET VCC Microprocessor1 Microprocessor2 CK CK GND 6 INH VCC GND CK2 7 4 GND * : Use a capacitor with less leakage current. 18 DS04-27408-1E MB3793-28A 2. Supply voltage monitor and watchdog timer stop VCC 2 CTW 5 VCC RESET 1 RESET MB3793 VCC Microprocessor1 3 CTP HALT CK CK1 8 CTW* CTP* RESET Microprocessor2 CK GND 6 INH GND VCC HALT GND CK2 7 4 GND * : Use a capacitor with less leakage current. 3. Setting of compulsory reset VCC 5 VCC 2 CTW 10 k RESET 1 MB3793 RESIN RESET CTW* CTP* 3 CTP CK1 8 VCC Microprocessor CK 6 INH GND 4 CK2 7 GND GND * : Use a capacitor with less leakage current. It is possible for the RESET pin to fix to "L" if the CTP pin is short-circuited to GND. Take care not to change the value of the CTP capacity because of the influence of Tr that is used at the time. DS04-27408-1E 19 MB3793-28A USAGE PRECAUTION 1. Do not configure the IC over the maximum ratings If the lC is used over the maximum ratings, the LSl may be permanently damaged. It is preferable for the device to normally operate within the recommended usage conditions. Usage outside of these conditions can have a bad effect on the reliability of the LSI. 2. Use the devices within recommended operating conditions The recommended operating conditions are under which the LSl is guaranteed to operate. The electrical ratings are guaranteed when the device is used within the recommended operating conditions and under the conditions stated for each item. 3. Printed circuit board ground lines should be set up with consideration for common impedance 4. Take appropriate measures against static electricity * * * * Containers for semiconductor materials should have anti-static protection or be made of conductive material. After mounting, printed circuit boards should be stored and shipped in conductive bags or containers. Work platforms, tools, and instruments should be properly grounded. Working personnel should be grounded with resistance of 250 k to 1 M between body and ground. 5. Do not apply negative voltages The use of negative voltages below -0.3 V may create parasitic transistors on LSI lines, which can cause malfunctions. 20 DS04-27408-1E MB3793-28A ORDERING INFORMATION Part number MB3793-28APNF DS04-27408-1E Package Remarks 8-pin plastic SOP (FPT-8P-M02) 21 MB3793-28A RoHS Compliance Information of Lead (Pb) Free version The LSI products of Fujitsu Microelectronics with "E1" are compliant with RoHS Directive , and has observed the standard of lead, cadmium, mercury, Hexavalent chromium, polybrominated biphenyls (PBB) , and polybrominated diphenyl ethers (PBDE) . The product that conforms to this standard is added "E1" at the end of the part number. LABELING SAMPLE (Lead free version) Lead-free mark JEITA logo MB123456P - 789 - GE1 (3N) 1MB123456P-789-GE1 1000 (3N)2 1561190005 107210 JEDEC logo G Pb QC PASS PCS 1,000 MB123456P - 789 - GE1 2006/03/01 ASSEMBLED IN JAPAN MB123456P - 789 - GE1 1/1 0605 - Z01A 1000 1561190005 "ASSEMBLED IN CHINA" is printed on the label of a product assembled in China. The part number of a lead-free product has the trailing characters "E1". MARKING FORMAT (Lead Free version) Lead Free version 3793AR XXXX E1 XXX 22 SOP-8 (FPT-8P-M02) DS04-27408-1E MB3793-28A MB3793-28APNF RECOMMENDED CONDITIONS OF MOISTURE SENSITIVITY LEVEL Item Condition Mounting Method IR (infrared reflow) , Manual soldering (partial heating method) Mounting times 2 times Storage period Before opening Please use it within two years after Manufacture. From opening to the 2nd reflow Less than 8 days When the storage period after opening was exceeded Please processes within 8 days after baking (125 C, 24H) Storage conditions 5 C to 30 C, 70%RH or less (the lowest possible humidity) [Temperature Profile for FJ Standard IR Reflow] (1) IR (infrared reflow) 260 C 255 C Main heating 170 C to 190 C (b) RT (a) (c) (d) (e) (d') H rank : 260 C Max (a) Temperature Increase gradient (b) Preliminary heating (c) Temperature Increase gradient (d) Peak temperature (d') Main heating (e) Cooling : Average 1 C/s to 4 C/s : Temperature 170 C to 190 C, 60s to 180s : Average 1 C/s to 4 C/s : Temperature 260 C Max; 255 C or more, 10s or less : Temperature 230 C or more, 40s or less or Temperature 225 C or more, 60s or less or Temperature 220 C or more, 80s or less : Natural cooling or forced cooling Note : Temperature : the top of the package body (2) Manual soldering (partial heating method) Conditions : Temperature 400 C Max Times : 5 s max/pin DS04-27408-1E 23 MB3793-28A PACKAGE DIMENSIONS 8-pin plastic SOP Lead pitch 1.27 mm Package width x package length 3.9 x 5.05 mm Lead shape Gullwing Sealing method Plastic mold Mounting height 1.75 mm MAX Weight 0.06 g (FPT-8P-M02) 8-pin plastic SOP (FPT-8P-M02) +0.25 Note 1) *1 : These dimensions include resin protrusion. Note 2) *2 : These dimensions do not include resin protrusion. Note 3) Pins width and pins thickness include plating thickness. Note 4) Pins width do not include tie bar cutting remainder. +.010 +0.03 *1 5.05 -0.20 .199 -.008 0.22 -0.07 +.001 .009 -.003 8 5 *2 3.900.30 6.000.40 (.154.012) (.236.016) Details of "A" part 45 1.550.20 (Mounting height) (.061.008) 0.25(.010) 0.40(.016) 1 "A" 4 1.27(.050) 0.440.08 (.017.003) 0.13(.005) 0~8 M 0.500.20 (.020.008) 0.600.15 (.024.006) 0.150.10 (.006.004) (Stand off) 0.10(.004) (c)2002-2008 FUJITSU MICROELECTRONICS LIMITED F08004S-c-4-8 C 2002 FUJITSU LIMITED F08004S-c-4-7 Dimensions in mm (inches). Note: The values in parentheses are reference values. Please check the latest package dimension at the following URL. http://edevice.fujitsu.com/package/en-search/ 24 DS04-27408-1E MB3793-28A CONTENTS - page DESCRIPTION .................................................................................................................................................... 1 FEATURES .......................................................................................................................................................... 1 APPLICATION ..................................................................................................................................................... 1 PIN ASSIGNMENT ............................................................................................................................................. 2 PIN DESCRIPTION ............................................................................................................................................ 2 BLOCK DIAGRAM .............................................................................................................................................. 3 BLOCK FUNCTIONS ......................................................................................................................................... 4 ABSOLUTE MAXIMUM RATINGS ................................................................................................................... 5 RECOMMENDED OPERATING CONDITIONS ............................................................................................ 5 ELECTRICAL CHARACTERISTICS ................................................................................................................ 6 TIMING DIAGRAM .............................................................................................................................................. 8 OPERATION SEQUENCE ................................................................................................................................ 13 TYPICAL CHARACTERISTICS ........................................................................................................................ 15 APPLICATION EXAMPLE ................................................................................................................................. 18 USAGE PRECAUTION ...................................................................................................................................... 20 ORDERING INFORMATION ............................................................................................................................. 21 RoHS Compliance Information of Lead (Pb) Free version ........................................................................... 22 LABELING SAMPLE (Lead free version) ........................................................................................................ 22 MARKING FORMAT (Lead Free version) ....................................................................................................... 22 MB3793-28APNF RECOMMENDED CONDITIONS OF MOISTURE SENSITIVITY LEVEL ................. 23 PACKAGE DIMENSIONS .................................................................................................................................. 24 DS04-27408-1E 25 MB3793-28A MEMO 26 DS04-27408-1E MB3793-28A MEMO DS04-27408-1E 27 MB3793-28A FUJITSU MICROELECTRONICS LIMITED Shinjuku Dai-Ichi Seimei Bldg., 7-1, Nishishinjuku 2-chome, Shinjuku-ku, Tokyo 163-0722, Japan Tel: +81-3-5322-3329 http://jp.fujitsu.com/fml/en/ For further information please contact: North and South America FUJITSU MICROELECTRONICS AMERICA, INC. 1250 E. Arques Avenue, M/S 333 Sunnyvale, CA 94085-5401, U.S.A. Tel: +1-408-737-5600 Fax: +1-408-737-5999 http://www.fma.fujitsu.com/ Asia Pacific FUJITSU MICROELECTRONICS ASIA PTE. LTD. 151 Lorong Chuan, #05-08 New Tech Park 556741 Singapore Tel : +65-6281-0770 Fax : +65-6281-0220 http://www.fmal.fujitsu.com/ Europe FUJITSU MICROELECTRONICS EUROPE GmbH Pittlerstrasse 47, 63225 Langen, Germany Tel: +49-6103-690-0 Fax: +49-6103-690-122 http://emea.fujitsu.com/microelectronics/ FUJITSU MICROELECTRONICS SHANGHAI CO., LTD. Rm. 3102, Bund Center, No.222 Yan An Road (E), Shanghai 200002, China Tel : +86-21-6146-3688 Fax : +86-21-6335-1605 http://cn.fujitsu.com/fmc/ Korea FUJITSU MICROELECTRONICS KOREA LTD. 206 Kosmo Tower Building, 1002 Daechi-Dong, Gangnam-Gu, Seoul 135-280, Republic of Korea Tel: +82-2-3484-7100 Fax: +82-2-3484-7111 http://kr.fujitsu.com/fmk/ FUJITSU MICROELECTRONICS PACIFIC ASIA LTD. 10/F., World Commerce Centre, 11 Canton Road, Tsimshatsui, Kowloon, Hong Kong Tel : +852-2377-0226 Fax : +852-2376-3269 http://cn.fujitsu.com/fmc/en/ Specifications are subject to change without notice. For further information please contact each office. All Rights Reserved. The contents of this document are subject to change without notice. Customers are advised to consult with sales representatives before ordering. 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Please note that FUJITSU MICROELECTRONICS will not be liable against you and/or any third party for any claims or damages arising in connection with above-mentioned uses of the products. Any semiconductor devices have an inherent chance of failure. You must protect against injury, damage or loss from such failures by incorporating safety design measures into your facility and equipment such as redundancy, fire protection, and prevention of over-current levels and other abnormal operating conditions. Exportation/release of any products described in this document may require necessary procedures in accordance with the regulations of the Foreign Exchange and Foreign Trade Control Law of Japan and/or US export control laws. The company names and brand names herein are the trademarks or registered trademarks of their respective owners. Edited: Sales Promotion Department