S-93C46B-H Datasheet, PDF (15/34 Pages) Seiko Instruments Inc – FOR AUTOMOTIVE OPERATION 3-WIRE SERIAL E2PROM

Rev.2.1_02
FOR AUTOMOTIVE 105°C OPERATION 3-WIRE SERIAL E²PROM
S-93C46B/56B/66B H Series
4. 3 Erasing data (ERASE)
To erase 16-bit data at a specified address, set all 16 bits of the data to 1, change CS to high, and then input
the ERASE instruction and address following the start bit. There is no need to input data. The data erase
operation starts when CS goes low. If the clocks more than the specified number have been input, the clock
pulse monitoring circuit cancels the ERASE instruction. For details of the clock pulse monitoring circuit, refer
to “ Function to Protect Against Write due to Erroneous Instruction Recognition”.
t_CDS
CS
Verify
Standby
SK
1 2 34 5 67 8 9
DI
 _{1 1} A5 A4 A3 A2 A1
A0
High-Z
DO
t_SV
busy
ready
t_HZ1
t_PR
High-Z
Figure 10 Data Erase Timing (S-93C46B)
t_CDS
CS
Verify
Standby
SK
1 2 3 4 5 6 7 8 9 10 11
DI
 11
DO
A6 A5 A4 A3 A2 A1 A0
High-Z
x : S-93C56B
A7: S-93C66B
t_SV
tPR
busy
ready
t_HZ1
High-Z
Figure 11 Data Erase Timing (S-93C56B, S-93C66B)
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