BR24G04-3A(2013) 데이터 시트보기 (PDF) - ROHM Semiconductor

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BR24G04-3A
(Rev.:2013)

Serial EEPROM series Standard EEPROM I2C BUS EEPROM (2-Wire)

ROHM Semiconductor 

BR24G04-3A

●Block Diagram

*A0 1

A1 2

A2 3

GND 4

4Kbit EEPROM array

8bit

Address

9bit

decoder

Word

address register

Data

register

8 Vcc

7 WP

START

Control circuit

STOP

ACK

High voltage

generating circuit

Power source

voltage detection

Figure 3. Block diagram

6 SCL

5 SDA

* A0=Don't use

Datasheet

●Pin Configuration

A0 1

8 Vcc

A1 2

A2 3

BR24G04-3A

7 WP

6 SCL

GND 4

5 SDA

●Pin Descriptions

Terminal

Name

A0

Input/

Output

Input

Function

Don’t use*1

A1

Input

Slave address setting*2

A2

Input

Slave address setting*2

GND

SDA

SCL

－

Input/

output

Input

Reference voltage of all input / output, 0V

Serial data input serial data output

Serial clock input

WP

Input

Write protect terminal

Vcc

－

Connect the power source.

*1 Pins not used as device address may be set to any of ‘H’,’L’, and ‘Hi-Z’.

*2 A1 and A2 are not allowed to use as open.

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