24AA52 데이터 시트보기 (PDF) - Microchip Technology

부품명

상세내역

일치하는 목록

24AA52

2K 2.2V I2C™ Serial EEPROM with Software Write-Protect

Microchip Technology 

24AA52/24LCS52

FIGURE 7-2:

RESETTING WRITE-PROTECT FUSE (RWPF)

WP = VHH = VCC + 5.5V

Bus Activity

Master

SDA Line

Bus Activity

1s

S

RWPF

Command

T

A

R

Control

Byte

T

1 00 1 0 0 0S1 0 1 0 0 0 00

Word

Address (0x09)

Data (0xFF)

00001001 11111111

TWC

S

T

O

P

P

A

A

A

C

C

C

K

K

K

Note: Clock = 100 kHz, VDD = 1.8V to 5.5V

7.3 Hardware Write-Protect

The WP pin can be tied to VCC or VSS. If tied to VCC, the

entire array will be write-protected, regardless of

whether the software write-protect register has been

written or not. If the WP pin is set to VCC, it will prevent

the software write-protect register from being written. If

the WP is tied to VSS, write protection is determined by

the status of the software write-protect register for

addresses 00h-7Fh. Addresses 80h-FFh are solely

protected by the WP pin level.

 1996-2011 Microchip Technology Inc.

DS21166K-page 11

Share Link: