S93A46A Datasheet, PDF (14/41 Pages) Seiko Instruments Inc – 125C OPERATION 3-WIRE SERIAL

125°C OPERATION 3-WIRE SERIAL E²PROM FOR AUTOMOTIVE
S-93A46A/56A/66A
Rev.6.1_00
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. When 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 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-93A46A)
CS
t_CDS
Verify
Standby
SK
1 2 3 4 5 6 7 8 9 10 11
DI
<1> 1 1
A6 A5 A4 A3 A2 A1 A0
DO
High-Z
x:S-93A56A
A7:S-93A66A
t_SV
busy
ready
t_HZ1
t_PR
High-Z
Figure 11 Data Erase Timing (S-93A56A, S-93A66A)
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Seiko Instruments Inc.