S-93L46A Datasheet, PDF (15/48 Pages) Seiko Instruments Inc – LOW VOLTAGE OPERATION CMOS SERIAL E2PROM

Rev.3.1_00
LOW VOLTAGE OPERATION CMOS SERIAL E²PROM
S-93L46A/56A/66A
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 have been input more than the
specified number, 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”.
CS
SK
DI
DO
t CDS
Verify
Standby
1 2 34 5 67 8 9
<1> _{1 1} A5 A4 A3 A2 A1
Hi-Z
A0
t SV
Busy
t PR
Ready
tHZ1
Hi-Z
Figure 13 Data Erase Timing (S-93L46A)
CS
SK
DI
DO
1 2 3 4 5 6 7 8 9 10 11
<1> 1 1
A6 A5 A4 A3 A2 A1 A0
Hi-Z
x : S-93L56A
A7: S-93L66A
t CDS
Verify
Standby
tSV
Busy
t PR
Ready
t HZ1
Hi-Z
Figure 14 Data Erase Timing (S-93L56A, S-93L66A)
Seiko Instruments Inc.
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