S-25A080A Datasheet, PDF (12/31 Pages) Seiko Instruments Inc – 125°C OPERATION SPI SERIAL E2PROM

125°C OPERATION SPI SERIAL E²PROM FOR AUTOMOTIVE ELECTRIC COMPONENT
S-25A080A/160A/320A
Rev.1.0_00
„ 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.
Table 15
Instruction code
Address
Instruction
Operation
SCK input clock SCK input clock SCK input clock
1 to 8
9 to 16
17 to 24
WREN
Write enable
0000 0110
−
−
WRDI
Write disable
0000 0100
−
−
RDSR
Read the status register
0000 0101
b7 to b0 output ^*1
−
WRSR
READ
WRITE
Write in the status register
Read memory data
Write memory data
0000 0001
0000 0011
0000 0010
b7 to b0 input
A15 to A8 ^*2
A15 to A8 ^*2
−
A7 to A0
A7 to A0
*1. Sequential data reading is possible.
*2. 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.
*3. After outputting data in the specified address, data in the following address is output.
Data
SCK input clock
25 to 32
−
−
−
−
D7 to D0 output ^*3
D7 to D0 input
12
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