s-93c46a Seiko Instruments Inc., s-93c46a Datasheet - Page 9

• Manufacturer Part Number: s-93c46a
• Description: Cmos Serial E2prom
• Manufacturer: Seiko Instruments Inc.

CMOS SERIAL E
S-93C46A/56A/66A
2.1 WRITE
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.
8
This instruction writes 16-bit data to a specified address.
CS
SK
DO
CS
SK
CS
SK
DO
DI
DI
DO
DI
2
PROM
1
1
1
1
1
1
0
0
0
2
2
2
1
1
1
3
3
3
A5
A7
X
4
Hi-Z
4
Hi-Z
4
Hi-Z
A4
A6
A6
5
5
5
Figure 7
Figure 8
Figure 9
A3
A5
A5
6
6
6
A2
Seiko Instruments Inc.
A4
A4
7
7
7
A1
A3
A3
8
WRITE Timing (S-93C46A)
8
WRITE Timing (S-93C56A)
8
WRITE Timing (S-93C66A)
A0
A2
A2
9
9
9
D15
A1
A1
10
10
10
A0
A0
11
11
D15
D15
25
12
12
D0
t
t
CDS
SV
27
27
t
D0
D0
PR
VERIFY
t
t
t
t
CDS
CDS
SV
SV
busy
t
t
PR
PR
ready
VERIFY
VERIFY
busy
busy
Hi-Z
t
HZ1
ready
ready
Hi-Z
Hi-Z
t
t
HZ1
HZ1