s-24c32c Seiko Instruments Inc., s-24c32c Datasheet - Page 28

• Manufacturer Part Number: s-24c32c
• Description: 2-wire Serial Eeprom S-24c32c/64c 32k/64k-bit
• Manufacturer: Seiko Instruments Inc.

28
LINE
SDA
2-WIRE CMOS SERIAL E
S-24C32C/64C
8. Operation when input stop condition during input write data
9. Command cancel by start condition
10. Precaution for use
S
T
A
R
T
The S-24C32C/64C does the write operation only when it receives data of 1 byte or more and receives a stop
condition immediately after ACK output.
Refer to Figure 32 regarding details.
By a start condition, users are able to cancel command which is being input. However, adjust the phase while the S-
24C32C/64C is outputting “L” because users are not able to input a start condition. When users cancel the
command, there may be a case that the address will not be identified. Use random read for the read operation, not
current address read.
Absolute maximum ratings: Do not operate these ICs in excess of the absolute maximum ratings (as listed on the
data sheet). Exceeding the supply voltage rating can cause latch-up.
Operations with moisture on the S-24C32C/64C pins may occur malfunction by short-circuit between pins.
Especially, in occasions like picking the S-24C32C/64C up from low temperature tank during the evaluation. Be sure
that not remain frost on the S-24C32C/64C’s pins to prevent malfunction by short-circuit.
Also attention should be paid in using on environment, which is easy to dew for the same reason.
M
S
B
1 0 1 0
ADDRESS
Remark W12 is arbitrary in the S-24C32C.
DEVICE
A2 A1 A0
S
B
L
W
W
R
E
R
T
I
0
/
A
C
K
Figure 32 Write Operation by Inputting Stop Condition during Write
WORD ADDRESS (n)
x x
x
UPPER
W12
2
PROM
W0
A
C
K
WORD ADDRESS (n)
W7
by stop condition
Write Inhibition
LOWER
Seiko Instruments Inc.
W0
C
A
K
D7 D6 D5 D4 D3 D2 D1 D0
DATA (n)
by stop condition
Write Enable
A
C
K
D7
by stop condition
DATA (n+1)
Write
Inhibition
by stop condition
Write
D0
C
A
K
D7
Enable
by stop condition
Write
Rev.2.0
DATA (n+x)
Inhibition
by stop condition
Write
D0
_00_H
C
A
K
Enable
S
O
P
T