S-25C010A-H Datasheet, PDF (22/33 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
 Protect Operation
Table 16 shows the block settings of Write protect. Setting value in Protect Bits (BP1, BP0) in the status register protect
data in the area of all/50%/25% of the memory address.
Setting signal WP to “L” provides the following settings.
• Write protect for the WRITE, WRSR instructions
• Reset bit WEL
Figures 7 and 8 show the Valid timing in Write protect and Invalid timing in Write protect.
Status Register
BP1
BP0
0
0
0
1
1
0
1
1
Table 16 Block Settings of Write Protect
Area of Write Protect
Address of Write protect block
S-25C040A
S-25C020A
S-25C010A
0%
None
None
None
25%
180h to 1FFh
C0h to FFh
60h to 7Fh
50%
100h to 1FFh
80h to FFh
40h to 7Fh
100%
000h to 1FFh
00h to FFh
00h to 7Fh
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