S-25CM01A Datasheet, PDF (12/28 Pages) Seiko Instruments Inc – Function to prevent malfunction by monitoring clock pulse

SPI SERIAL E²PROM
S-25CM01A
Rev.2.2_02_S
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
RDSR instruction
RDSR instruction
D2 D1 D0
RDSR
SI
S
R ^BB
W ^PP
D ¹⁰
RDSR
S
R ^BB
W ^PP
D ¹⁰
RDSR
S
R ^BB
W ^PP
D ¹⁰
SO
000 11
000 11
000 ₀₀
WEL, WIP
WEL, WIP
WEL, WIP
tPR
Figure 9 Usage Example of WEL, WIP Bits during Write
12