s-25a080a Seiko Instruments Inc., s-25a080a Datasheet
s-25a080a
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s-25a080a Summary of contents
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... Caution Before using the product in medical equipment or automobile equipment including car audio, keyless entry and engine control unit, contact to SII is indispensable. 2 PROM The S-25A080A/160A/320A is a SPI serial E operates under the high temperature, at high speed, with low current consumption and the wide range operation. The S- 25A080A/160A/320A respectively has the capacity of 8 Kbit, 16 Kbit, 32 Kbit and the organization of 1024 words × ...
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... OPERATION SPI SERIAL E S-25A080A/160A/320A Pin Configuration 8-Pin SOP (JEDEC) Top view GND 4 5 Figure 1 S-25A080A0A-J8T2GD S-25A160A0A-J8T2GD S-25A320A0A-J8T2GD 2 2 PROM FOR AUTOMOTIVE ELECTRIC COMPONENT Pin No. Symbol 1 VCC HOLD 3 WP SCK 4 GND SCK 7 HOLD ...
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... SCK SI HOLD Data Register WP Address Register Output SO Control Circuit VCC GND 2 PROM FOR AUTOMOTIVE ELECTRIC COMPONENT Voltage Detector Mode Decoder Status Register Read Circuit Figure 2 Seiko Instruments Inc. S-25A080A/160A/320A Step-up Circuit Page Latch Memory Cell Array Status Memory Cell Array Y Decoder 3 ...
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... OPERATION SPI SERIAL E S-25A080A/160A/320A Absolute Maximum Ratings Item Power supply voltage Input voltage Output voltage Operation ambient temperature Storage temperature Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. ...
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... V CC 0.8 × V － 0.8 × Table 10 Measurement Conditions 0.2 × V 0.5 × V 100 pF Seiko Instruments Inc. S-25A080A/160A/320A −40°C to +125° 5.0 MHz f = 6.5 MHz SCK SCK Min. Max. Min. － 2.0 － ...
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... OPERATION SPI SERIAL E S-25A080A/160A/320A Item SCK clock frequency CS setup time during CS falling CS setup time during CS rising CS deselect time CS hold time during CS falling CS hold time during CS rising *1 SCK clock time “H” *1 SCK clock time “L” *2 Rising time of SCK clock ...
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... WS1 − WH1 − WS2 − t 150 WH2 µs. This clock cycle is determined by a combination 1/f SCK SCK Seiko Instruments Inc. S-25A080A/160A/320A −40°C to +105° Min. Max. Min. − − 5.0 90 − 65 − 140 − ...
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... OPERATION SPI SERIAL E S-25A080A/160A/320A Item SCK clock frequency CS setup time during CS falling CS setup time during CS rising CS deselect time CS hold time during CS falling CS hold time during CS rising *1 SCK clock time “H” *1 SCK clock time “L” *2 Rising time of SCK clock ...
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... PROM FOR AUTOMOTIVE ELECTRIC COMPONENT Table 14 Symbol CSS. MSB IN Figure 3 Serial Input Timing SKS.HL t SKH.HL t OZ.HL Figure 4 Hold Timing Seiko Instruments Inc. S-25A080A/160A/320A −40°C to +125°C Unit Min. Max. − 4 CSH. RSK FSK LSB IN t SKH ...
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... OPERATION SPI SERIAL E S-25A080A/160A/320A CS SCK ADDR LSB WS1 WS2 PROM FOR AUTOMOTIVE ELECTRIC COMPONENT t SCK t HIGH t LOW Figure 5 Serial Output Timing Figure 6 Valid Timing in Write Protect Figure 7 Invalid Timing in Write Protect Seiko Instruments Inc ...
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... In the hold status, the serial output goes in high impedance, the serial input and the serial clock go in “Don’t care”. During the hold operation, be sure to set the device in active by setting the chip select ( CS pin) to “L”. Refer to “ Hold Operation” for details. 2 PROM FOR AUTOMOTIVE ELECTRIC COMPONENT Seiko Instruments Inc. S-25A080A/160A/320A 11 ...
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... S-25A080A/160A/320A Instruction Setting Table 15 is the list of instruction for the S-25A080A/160A/320A. The instruction is able to be input by changing the CS pin “H” to “L”. Input the instruction in the MSB first. Each instruction code is organized with 1-byte as shown below. If the S-25A080A/160A/320A receives any invalid instruction code, the device goes in the non-select status. ...
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... After the Write operation by the WRSR instruction • After the Write operation by the WRITE instruction 2 PROM FOR AUTOMOTIVE ELECTRIC COMPONENT BP1 Block Protect Bits Figure 8 Organization of Status Register Seiko Instruments Inc. S-25A080A/160A/320A BP0 WEL WIP Write Enable Latch Write In Progress 13 ...
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... OPERATION SPI SERIAL E S-25A080A/160A/320A 1. 4 WIP (b0) : Write In Progress Bit WIP is Read Only and shows whether the internal memory is in the Write operation or not by the WRITE or WRSR instruction. Bit WIP is “1” during the Write operation but “0” during any other status. Figure 9 shows the usage example ...
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... CS at the 8th clock of the serial clock (SCK). To cancel the WREN instruction, input the clock different from a specified value ( clock) while “L” SCK PROM FOR AUTOMOTIVE ELECTRIC COMPONENT High / Low Instruction High-Z Figure 10 WREN Operation Seiko Instruments Inc. S-25A080A/160A/320A ...
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... OPERATION SPI SERIAL E S-25A080A/160A/320A 3. Write disable (WRDI) The WRDI instruction is one of ways to reset bit Write Enable Latch (WEL). After selecting the device by the chip select ( CS ), input the instruction code from serial data input (SI). To reset bit WEL, set the device in the non-select status the 8th clock of the serial clock. To cancel the WRDI instruction, input the clock different from a specified value ( clock) while “ ...
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... Contrarily, two of Read Only bits WEL and WIP are being updated while the Write cycle is in progress SCK PROM FOR AUTOMOTIVE ELECTRIC COMPONENT High / Low Instruction High-Z b7 Figure 12 RDSR Operation Seiko Instruments Inc. S-25A080A/160A/320A Outputs Data in the Status Register ...
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... OPERATION SPI SERIAL E S-25A080A/160A/320A 5. Write in the status register (WRSR) The values of status register (SRWD, BP1, BP0) can be rewritten by inputting the WRSR instruction. But b6, b5, b4, b1 status register cannot be rewritten are always “0” when reading the status register. ...
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... Instruction SI High-Z SO Remark In the S-25A080A, the higher addresses A15 to A10 = Don’t care. In the S-25A160A, the higher addresses A15 to A11 = Don’t care. In the S-25A320A, the higher addresses A15 to A12 = Don’t care. 2 PROM FOR AUTOMOTIVE ELECTRIC COMPONENT High / Low ...
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... Bit WIP and WEL are reset to “0” when Write has completed. The S-25A080A/160A/320A can Page Write of 32 bytes. Its function to transmit data is as same as Byte Write basically, but it operates Page Write by receiving sequential 8-bit Write data as much data as page size has. Input the instruction code, the address and data from serial data input (SI) after inputting “ ...
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... SCK Instruction SI SO Remark In the S-25A080A, the higher addresses A15 to A10 = Don’t care. In the S-25A160A, the higher addresses A15 to A11 = Don’t care. In the S-25A320A, the higher addresses A15 to A12 = Don’t care. 2 PROM FOR AUTOMOTIVE ELECTRIC COMPONENT High / Low ...
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... X X Hardware Protect 0 (HPM) 0 Remark X = Don’t care 22 2 PROM FOR AUTOMOTIVE ELECTRIC COMPONENT Table 16 The Block Settings of Write Protect The area of Write protect S-25A080A 300h-3FFh 50 % 200h-3FFh 100 % 000h-3FFh Table 17 Protect Operation Bit SRWD Bit WEL Write protect block X ...
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... Hold ( HOLD ) is switched. If setting Hold ( HOLD ) to “H”, the hold status ends when the serial clock goes in “L” after Hold ( HOLD ) is switched. SCK HOLD 2 PROM FOR AUTOMOTIVE ELECTRIC COMPONENT Hold status Figure 17 Hold Operation Seiko Instruments Inc. S-25A080A/160A/320A Hold status 23 ...
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... I/O Pin 1. Connection of input pin All input pins in S-25A080A/160A/320A have the CMOS structure. Do not set these pins in high impedance during operation when you design. Especially, set the CS input in the non-select status “H” during power-on/off and standby. The error Write does not occur as long as the CS pin is in the non-select status “H”. Set the CS pin to V resistor (the pull-up resistor of 10 kΩ ...
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... PROM FOR AUTOMOTIVE ELECTRIC COMPONENT Figure SCK Pin Figure 20 SI HOLD Pin Figure 21 SO Pin 2 PROM pins may occur malfunction by short-circuit between pins. Especially, in PROM up from low temperature tank during the evaluation. Be sure that not remain frost Seiko Instruments Inc. S-25A080A/160A/320A ...
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... OPERATION SPI SERIAL E S-25A080A/160A/320A Precautions ● Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit. ● SII claims no responsibility for any and all disputes arising out connection with any infringement of the products including this IC upon patents owned by a third party. ...
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... Product Name Structure S-25AxxxA 0 A − J8T2 PROM FOR AUTOMOTIVE ELECTRIC COMPONENT Burn-in type D: Wafer burn-in Package name (abbreviation) and IC packing specification J8T2: 8-Pin SOP (JEDEC), Tape Fixed Product name S-25A080A: 8 Kbit S-25A160A: 16 Kbit S-25A320A: 32 Kbit Seiko Instruments Inc. S-25A080A/160A/320A 27 ...
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... Use of the information described herein for other purposes and/or reproduction or copying without the express permission of Seiko Instruments Inc. is strictly prohibited. The products described herein cannot be used as part of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of Seiko Instruments Inc ...