s-93c46a Seiko Instruments Inc., s-93c46a Datasheet - Page 11

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

CMOS SERIAL E
S-93C46A/56A/66A
2.3 WRAL
After changing CS to high, input a start-bit, op-code (WRAL), address (optional), 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 WRAL operation.
It is not necessary to make the data "1" before initiating the WRAL operation.
10
This instruction writes the same 16-bit data into every address.
CS
SK
DO
CS
SK
DO
DO
DI
DI
CS
SK
DI
2
PROM
1
1
1
1
1
1
2
0
2
0
2
0
0
0
0
3
3
3
0
0
0
4
Hi-Z
4
Hi-Z
4
Hi-Z
1
1
1
5
5
5
Figure 13
6
6
6
Figure 14
Figure 15
7
7
Seiko Instruments Inc.
7
6Xs
6Xs
4Xs
8
8
8
WRAL Timing (S-93C46A)
WRAL Timing (S-93C56A)
WRAL Timing (S-93C66A)
9
9
9
D15
10
10
10
11
11
D15
D15
12
12
25
D0
t
t
CDS
SV
27
27
D0
D0
t
PR
t
t
VERIFY
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