s-93c46b Seiko Instruments Inc., s-93c46b Datasheet - Page 16

• Manufacturer Part Number: s-93c46b
• Description: Cmos Serial E2prom
• Manufacturer: Seiko Instruments Inc.

16
CMOS SERIAL E
S-93C46B/56B/66B
4. 3 Erasing data (ERASE)
To erase 16-bit data at a specified address, set all 16 bits of the data to 1, change CS to high, and
then input the ERASE instruction and address following the start bit. There is no need to input data.
The data erase operation starts when CS goes low. If the clocks more than the specified number
have been input, the clock pulse monitoring circuit cancels the ERASE instruction. For details of
the clock pulse monitoring circuit, refer to “
Erroneous Instruction Recognition ”.
CS
SK
DO
DI
CS
SK
DO
DI
2
PROM
<1>
1
<1>
1
1
2
Figure 13 Data Erase Timing (S-93C56B, S-93C66B)
1
1
2
3
1
Figure 12 Data Erase Timing (S-93C46B)
4
3
A5
A6
Hi-Z
4
5
Seiko Instruments Inc.
A7: S-93C66B
x : S-93C56B
A5
A4
5
6
A3
A4
Hi-Z
7
6
A2
A3
7
8
A1
A2
8
9
Function to Protect Against Write due to
A1
10
9
A0
11
A0
t
SV
t
CDS
t
SV
t
t
PR
CDS
t
PR
Busy
Verify
Busy
Verify
Ready
Ready
Standby
Hi-Z
t
HZ1
Rev.4.3
Standby
Hi-Z
t
HZ1
_00