S-24C08CH 查看數據表（PDF） - Unspecified

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S-24C08CH

FOR AUTOMOTIVE 105°C OPERATION 2-WIRE SERIAL E2PROM

Unspecified 

FOR AUTOMOTIVE 105°C OPERATION 2-WIRE SERIAL E2PROM

S-24C08C H Series

Rev.3.0_01_H

6. 3 Write protect

Write protect is available in the S-24C08C. When the WP pin is connected to the VCC pin, write operation to

memory area is inhibited.

When the WP pin is connected to the GND pin or set in open, the write protect is invalid, and write operation in all

memory area is available.

Fix the level of the WP pin from start condition in the write operation (byte write, page write) until stop condition. If

the WP pin changes during this time, the address data being written at this time is not guaranteed. Regarding the

timing of write protect, refer to Figure 7.

In not using the write protect, connect the WP pin to the GND pin or set it open. The write protect is valid in the

range of operation power supply voltage.

As seen in Figure 15 when the write protect is valid, the S-24C08C does not generate an acknowledgment signal

after data input.

S

W

T

R

A

I

R

T

DEVICE

ADDRESS

T

E

WORD ADDRESS

S

T

O

DATA

P

SDA LINE

1 0 1 0 A2 P1 P0 0 W7 W6 W5 W4 W3 W2 W1 W0 D7 D6 D5 D4 D3 D2 D1 D0

M

LR A

S

S/ C

B

BW K

AA

CC

KK

N

A

C

K

WP

Figure 15 Write Protect

14

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