s-25a080a Seiko Instruments Inc., s-25a080a Datasheet - Page 15

• Manufacturer Part Number: s-25a080a
• Description: 25?c Operation Spi Serial E2prom For Automotive Electric Component
• Manufacturer: Seiko Instruments Inc.

Rev.1.0
125°C OPERATION SPI SERIAL E
2. Write enable (WREN)
SCK
WP
Before writing data (WRITE and WRSR), be sure to set bit Write Enable Latch (WEL). This instruction is to set bit
WEL. Its operation is below.
After selecting the device by the chip select ( CS ), input the instruction code from serial data input (SI). To set bit WEL,
set the device in the non-select status by CS at the 8th clock of the serial clock (SCK). To cancel the WREN
instruction, input the clock different from a specified value (n = 8 clock) while CS is in “L”.
SO
CS
SI
_00
1
2
Figure 10 WREN Operation
2
PROM FOR AUTOMOTIVE ELECTRIC COMPONENT
Seiko Instruments Inc.
3
High / Low
4
Instruction
High-Z
5
6
S-25A080A/160A/320A
7
8
15