S-24C08C Datasheet, PDF (27/33 Pages) Seiko Instruments Inc – Write protect function during the low power supply voltage

Rev.1.0_00_H
2-WIRE SERIAL E²PROM
S-24C08C (WLP PRODUCT)
8. Operation when input stop condition during input write data
The S-24C08C 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 29 regarding details.
Write Enable
Write Enable
Write Enable
by the STOP condition by the STOP condition by the STOP condition
Write Inhibition
by the STOP condition
Write Inhibition
Write Inhibition
by the STOP condition by the STOP condition
S
T
A
R DEVICE
T ADDRESS
W
R
I
T
E WORD ADDRESS (n)
DATA (n)
DATA (n+1)
SDA
LINE
1 0 1 0 A2 P1 P0 0 W7W6W5W4W3W2 W1W0 D7 D6 D5 D4 D3 D2 D1 D0 D7
D0 D7
S
T
O
DATA (n+x) P
D0
M
LRA
A
A
A
A
S
S/C
C
C
C
C
B
BWK
K
K
K
K
Figure 29 Write Operation by Inputting Stop Condition during Write
9. Command cancel by start condition
By a start condition, users are able to cancel command which is being input. However, adjust the phase while the
S-24C08C 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.
10. Precaution for use
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-24C08C pins may occur malfunction by short-circuit between pins. Especially, in
occasions like picking the S-24C08C up from low temperature tank during the evaluation. Be sure that not remain
frost on the S-24C08C’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.
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