austriamicrosystems AS1351 Programming Board Application Note AS1351 Programming Board Application Note www.austriamicrosystems.com Revision 1.00 1-4 austriamicrosystems AS1351 Programming Board Application Note General Description Switch Description Figure 1: Board description Table 1 : Switch description Mark Switch Description A ON/OFF ON/OFF switch B power supply Voltage switch C VOUT1 D VOUT2 E START Information Board powered OFF Board powered ON VCC of the IC is set to 3.3V VCC of the IC is set to 5V Rotary switch for programming VOUT1 of the IC. Please see table for Programming voltage value 1 values. Rotary switch for programming VOUT2 of the IC. Please see table for Programming voltage value 2 values. Start Button If hit the IC will be programmed with the chosen values for VOUT1-2 Feedback and Socket Description Table 2: Feedback and Socket Description Mark Name Description F active G OK H error I Socket ON if Supply is active. If ON after programming sequence, the IC was successfully programmed. Blinks if an already programmed IC was placed in the socket. If ON after programming sequence, the programming of the IC failed. An AS1351 can be placed here, either to be programmed or to be evaluated. Input/Output Description Table 3: Input/Output Description Mark Connector Description Supply Voltage Connector (12V / J DC-Jack 900mA) K-L GND Ground Pins M VOUT1 Output Voltage 1 N VOUT2 Output Voltage 2 www.austriamicrosystems.com Figure 2: Board description Revision 1.00 2-4 austriamicrosystems AS1351 Programming Board Application Note Voltage Selectors Table 4: Positions for Voltage Programming Position Voltage Position Voltage 0 1.8V 8 2.6V 1 1.9V 9 2.7V 2 2.0V A 2.8V 3 2.1V B 2.9V 4 2.2V C 3.0V 5 2.3V D 3.1V 6 2.4V E 3.2V 7 2.5V F 3.3V Figure 3: Voltage Selectors Starting Up Introduction The Programming Board can be used to program the AS1351 Dual LDO regulator. The IC will be programmed according to the setting of the Rotary Switches. Programming is performed automatically after pressing the start button. Power Setup Make sure that the board is switched OFF (On/Off Switch "A" is OFF) then connect 12V supply voltage to the DC-jack (see Table 3: Input/Output Description). The supply must be capable to drive a current of 900mA. The polarity of the DC-Jack connector must be +12V inside and GND outside. Inserting IC The programming board must be equipped with the AS1351. When inserting an IC into the socket it is vital that the Pin1 marker of the IC (small dot) is placed in the corner where the socket is marked with the small dot. Note: The programming board must be powered OFF while inserting or extracting an IC from the socket. Operational sequence Measurement Figure 4: Pin1 Marker 1. If not present get the datasheet for the AS1351 from www.austriamicrosystems.com. Drive the IC on the Programming Board only with the recommended settings and values as described in the datasheet. 2. Make sure that the board is turned OFF. (On/Off switch "A" set to OFF.) Connect the power supply if necessary. (See Power Setup.) 3. Insert an AS1351 into the socket. Pin1 must match with the pin1 marking on the socket. (See Inserting IC.) 4. Set the power supply switch "B" to the desired supply voltage 3.3 or 5V 5. Turn the programming board ON. (On/Off switch "A" set to ON.) The yellow LED "F" should be on now. 6. Perform measurements at the outputs. "K-N" Note: Due to influences of the socket the full performance of the regulators can be slightly lower. The AS1351 can be programmed to an output voltage only once (One-Time-Programming OTP function). www.austriamicrosystems.com Revision 1.00 3-4 austriamicrosystems AS1351 Programming Board Application Note Programming 1. If not present get the datasheet for the AS1351 from www.austriamicrosystems.com. Drive the IC on the Programming Board only with the recommended settings and values as described in the datasheet. 2. Make sure that the board is turned OFF. (On/Off switch "A" set to OFF.) Connect the power supply if necessary. (See Power Setup.) 3. Insert an AS1351 into the socket. Pin1 must match with the pin1 marking on the socket. (See Inserting IC.) 4. Set the power supply switch to 5V 5. Turn the programming board ON. (On/Off switch "A" set to ON) The yellow LED "F" should be on now. 6. Select the required output voltages with the rotary switches "C, D". Each number corresponds to a certain output voltage. (See Table 4: Positions for Voltage Programming.) 7. Press the Start button "E" - If the green OK LED "G" turns ON, all required output voltages are programmed successfully! - If the red error LED "H" turns ON an error occurred during the programming. 8. Turn the board OFF (On/Off switch "A" set to OFF). Open the socket and remove the fully programmed AS1351. Note: If an already programmed AS1351 is entered and the START button is pressed, the green LED starts to blink. A new programming is not performed. Have fun using the Programming Board. If there are questions do not hesitate to contact us. See contact information below. Copyright Copyright (c) 2005 austriamicrosystems. Trademarks registered (R). All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. To the best of its knowledge, austriamicrosystems asserts that the information contained in this publication is accurate and correct. Contact Information Headquarters: austriamicrosystems AG Standard Linear A 8141 Schloss Premstatten, Austria T. +43 (0) 3136 500 0 F. +43 (0) 3136 5692 info@austriamicrosystems.com For Sales Offices, Distributors and Representatives, please visit: www.austriamicrosystems.com www.austriamicrosystems.com Revision 1.00 4-4 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: ams: AS1351_EK_PB