S-93C46A Datasheet, PDF (9/53 Pages) Seiko Instruments Inc – CMOS SERIAL E2PROM

CMOS SERIAL E²PROM
S-93C46A/56A/66A
2.1 WRITE
This instruction writes 16-bit data to a specified address.
After changing CS to high, input a start-bit, op-code (WRITE), address, and 16-bit data. If there is a data overflow of more
than 16 bits, only the last 16 bits of the data is considered valid. Changing CS to low will start the WRITE operation. It is not
necessary to make the data "1" before initiating the WRITE operation.
tCDS
CS
VERIFY
SK
1 2 3 4 5 6 7 8 9 10
25
DI
1 0 1 A5 A4 A3 A2 A1 A0 D15
D0
tSV
tHZ1
DO
Hi-Z
busy
ready
Hi-Z
tPR
Figure 7 WRITE Timing (S-93C46A)
tCDS
CS
VERIFY
SK
1 2 3 4 5 6 7 8 9 10 11 12
27
DI
1 0 1 X A6 A5 A4 A3 A2 A1 A0 D15
D0
tSV
tHZ1
DO
Hi-Z
busy
ready
Hi-Z
tPR
Figure 8 WRITE Timing (S-93C56A)
tCDS
CS
VERIFY
SK
1 2 3 4 5 6 7 8 9 10 11 12
27
DI
1 0 1 A7 A6 A5 A4 A3 A2 A1 A0 D15
D0
tSV
tHZ1
DO
Hi-Z
busy
ready
Hi-Z
tPR
Figure 9 WRITE Timing (S-93C66A)
8
Seiko Instruments Inc.