S-25A080A Datasheet, PDF (14/31 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
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.
CS
WRITE or WRSR instruction
RDSR instruction
SI
D2 D1 D0
RDSR
S
R ^BB
W ^PP
D ¹⁰
SO
000 11
WEL, WIP
RDSR instruction
RDSR
S
R ^BB
W ^PP
D ¹⁰
000 11
WEL, WIP
tPR
RDSR instruction
RDSR
S
R ^BB
W ^PP
D ¹⁰
000 00
WEL, WIP
Figure 9 Usage Example of WEL, WIP Bits during Write
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Seiko Instruments Inc.