S-25C010A-H Datasheet, PDF (10/33 Pages) Seiko Instruments Inc – OPERATION SPI SERIAL E2PROM FOR AUTOMOTIVE

105°C OPERATION SPI SERIAL E²PROM FOR AUTOMOTIVE
S-25C010A/020A/040A H Series
Rev.2.3_01_C
 Instruction Setting
Tables 14 and 15 are the lists of instructions for the S-25C010A/020A/040A. 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-25C010A/020A/040A receives any invalid instruction code, the device goes in the non-select
status.
1. S-25C010A/020A
Table 14 Instruction Set
Instruction code
Address
Instruction
Operation
SCK input clock
1 to 8
SCK input clock
9 to 16
WREN
Write enable
0000 X110
−
WRDI
RDSR
Write disable
Read the status register
0000 X100
0000 X101
−
b7 to b0 output^*1
WRSR
Write in the status register
0000 X001
b7 to b0 input
READ
Read memory data
0000 X011
A7^*2 to A0
WRITE
Write memory data
0000 X010
A7^*2 to A0
*1. Sequential data reading is possible.
*2. In the S-25C010A, A7 = Don’t care because the address range is A6 to A0.
*3. After outputting data in the specified address, data in the following address is output.
Remark X = Don’t care.
2. S-25C040A
Table 15 Instruction Set
Instruction code
Address
Instruction
Operation
SCK input clock
SCK input clock
1 to 8
9 to 16
WREN
Write enable
0000 X110
−
WRDI
RDSR
Write disable
Read the status register
0000 X100
0000 X101
−
b7 to b0 output^*1
WRSR
Write in the status register
0000 X001
b7 to b0 input
READ
Read memory data
0000 [A8^*2]011
A7 to A0
WRITE
Write memory data
0000 [A8^*2]010
A7 to A0
*1. Sequential data reading is possible.
*2. In the S-25C040A, assign bit A8 in the address into the fifth bit in an instruction code.
*3. After outputting data in the specified address, data in the following address is output.
Remark X = Don’t care.
Data
SCK input clock
17 to 24
−
−
−
−
D7 to D0 output^*3
D7 to D0 input
Data
SCK input clock
17 to 24
−
−
−
−
D7 to D0 output^*3
D7 to D0 input
10