s-93a56ad0a-j8t2gd Seiko Instruments Inc., s-93a56ad0a-j8t2gd Datasheet - Page 12

• Manufacturer Part Number: s-93a56ad0a-j8t2gd
• Description: Cmos Serial E2prom
• Manufacturer: Seiko Instruments Inc.

12
CMOS SERIAL E
S-93A46A/56A/66A
4.2 Writing Data (WRITE)
CS
SK
DO
DI
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. When 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 “
Instruction Recognition ”.
CS
SK
DO
DI
<1>
1
<1>
1
2
0
2
PROM
0
2
1
3
1
3
Hi-Z
4
A5
4
Hi-Z
Figure 7 Data Write Timing (S-93A56A/66A)
A6
5
Figure 6 Data Write Timing (S-93A46A)
A4
5
A5
x:S-93A56A
A7:S-93A66
6
A3
6
A4
Seiko Instruments Inc.
7
A2
7
A3
8
Function to Protect Against Write due to Erroneous
A1
8
A2 A1
9
A0
9
10
D15
10
A0
11
D15
12
25
D0
t
SV
t
27
CDS
D0
t
PR
t
SV
t
CDS
t
Verify
busy
PR
Verify
busy
ready
Standby
Rev.2.1
ready
Hi-Z
t
HZ1
Standby
Hi-Z
t
HZ1
_00