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
DI
1
2
3
4
5
6
7
8
9
10
25
D0
0
A5 A4 A3 A2 A1 A0 D15
Hi-Z
1
1
tSV
tHZ1
busy
ready
DO
Hi-Z
tPR
Figure 7 WRITE Timing (S-93C46A)
tCDS
CS
SK
VERIFY
1
2
3
4
5
6
7
8
9
10 11 12
27
D0
1
0
1
X
A6 A5 A4 A3 A2 A1 A0 D15
DI
tSV
tHZ1
Hi-Z
busy
ready
DO
Hi-Z
tPR
Figure 8 WRITE Timing (S-93C56A)
tCDS
CS
SK
VERIFY
1
2
3
4
5
6
7
8
9
10 11 12
27
D0
0
A7 A6 A5 A4 A3 A2 A1 A0 D15
Hi-Z
DI
1
1
tSV
tHZ1
busy
ready
DO
Hi-Z
tPR
Figure 9 WRITE Timing (S-93C66A)
Seiko Instruments Inc.
8
SII [ SEIKO INSTRUMENTS INC ]
