S-25C256A Datasheet, PDF (19/31 Pages) Seiko Instruments Inc – Write protect function during the low power supply voltage

Rev.2.2_02_S
SPI SERIAL E²PROM
S-25C256A
CS
WP
SCK
SI
High / Low
1 2 3 4 5 6 7 8 9 10 11 22 23 24 25 26 27 28 29 30 31 32
Instruction
16-bit Address (n)
Data Byte (n)
Data Byte (n + x)
A15 A14 A13 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0
D4 D3 D2 D1 D0
High-Z
SO
Remark The higher addresses A15 = Don’t care.
Figure 17 WRITE Operation (Page)
19