S-93C46B-H Datasheet, PDF (14/34 Pages) Seiko Instruments Inc – FOR AUTOMOTIVE OPERATION 3-WIRE SERIAL E2PROM

FOR AUTOMOTIVE 105°C OPERATION 3-WIRE SERIAL E²PROM
S-93C46B/56B/66B H Series
Rev.2.1_02
4. 2 Writing data (WRITE)
To write 16-bit data to a specified address, change CS to high and then input the WRITE instruction, address,
and 16-bit data following the start bit. The write operation starts when CS goes low. There is no need to set
the data to 1 before writing. If the clocks more than the specified number have been input, the clock pulse
monitoring circuit cancels the WRITE 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 3 4 5 6 7 8 9 10
25
DI
 0 1 A5 A4 A3 A2 A1 A0 D15
D0
High-Z
DO
t_SV
t_PR
t_HZ1
busy
ready
High-Z
Figure 8 Data Write Timing (S-93C46B)
t_CDS
CS
Verify
Standby
SK
1 2 3 4 5 6 7 8 9 10 11 12
27
DI
01
A6 A5 A4 A3 A2 A1 A0 D15
D0
High-Z
DO
x : S-93C56B
tSV
t_PR
busy
ready
tHZ1
High-Z
A7: S-93C66B
Figure 9 Data Write Timing (S-93C56B, S-93C66B)
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