S-93C46B_1 Datasheet, PDF (15/50 Pages) Seiko Instruments Inc – 3-WIRE SERIAL E2PROM

Rev.7.0_00
3-WIRE SERIAL E²PROM
S-93C46B/56B/66B
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
c _{1 1} A5 A4 A3 A2 A1
A0
High-Z
DO
t_SV
t_HZ1
busy
ready
t_PR
High-Z
Figure 13 Data Erase Timing (S-93C46B)
t_CDS
CS
Verify
Standby
SK
1 2 3 4 5 6 7 8 9 10 11
DI
c 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 14 Data Erase Timing (S-93C56B, S-93C66B)
Seiko Instruments Inc.
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