S93S46A Datasheet, PDF (15/25 Pages) Seiko Instruments Inc – 3-WIRE SERIAL E2PROM FOR AUTOMOTIVE

Rev.2.1_00
150°C OPERATION 3-WIRE SERIAL E²PROM FOR AUTOMOTIVE
S-93S46A/56A/66A
4. 5 Erasing chip (ERAL)
To erase the data of the entire memory address space, set all the data to "1", change the CS pin to "H", and then
input the ERAL instruction and an address following the start bit. Any address can be input. There is no need to
input data. The chip erase operation starts when the CS pin goes to "L". When the clocks more than the specified
number have been input, the clock pulse monitoring circuit cancels the ERAL instruction. For details of the clock
pulse monitoring circuit, refer to " Function to Protect Against Write due to Erroneous Instruction
Recognition".
CS
t CDS
SK
1
2
34
5
6
7
89
Verify
Standby
DI
<1> 0
010
DO
High-Z
4Xs
t SV
t HZ1
Busy _Ready
t PR
High-Z
Figure 10 Chip Erase Timing (S-93S46A)
CS
t CDS
SK
1
2
3
4
5
6
7
8
9 10 11
Verify
Standby
DI
<1> 0
010
High-Z
6Xs
DO
t SV
Busy _Ready
t PR
t HZ1
High-Z
Figure 11 Chip Erase Timing (S-93S56A/66A)
Seiko Instruments Inc.
15