Datasheet > BU99022NUX-3

BU99022NUX-3

更新时间： 2022-02-26 14:08:00

品牌	Logo	应用领域
罗姆 - ROHM		可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
26页	585K
描述
I2C BUS 2kbit 2kbit 2ports serial EEPROM

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BU99022NUX-3 数据手册

Datasheet

BU99022NUX-3

●Block diagram

Vcc1 1

Vcc2

2Kbit EEPROM array

8bit

Data

Word

Address

decorder

Word

8bit

Data

Address

decorder

8bit

GND 2

WP2

SCL2

SDA2

Address register

start

stop

Control logic

stop

Control logic

SCL1 3

SDA1 4

Vcc level detect

High voltage gen.

Vcc level detect

Port1 EEPROM

Port2 EEPROM

Fig.4 Block Diagram

●Pin assignment and description

Function

Pin No.

Pin Name

Input/output

Connect the power source

－

Vcc1

GND

SCL1

SDA1

SDA2

SCL2

WP2

Reference voltage of all input/output,0V

Serial clock input for port1

Input

input/output

input

Serial data input /serial data output for port1 EEPROM

Serial data input /serial data output for port2 EEPROM

Serial clock input for port2 EEPROM

input

Write protect terminal for port2 EEPROM

Connect the power source

－

Vcc2

●Operating condition of port1 and port2 EEPROM

Vcc1

Vcc2

port1

port2

Vcc

open

○

Vcc

open

Vcc

open

Vcc

open

○ : operating possible

×: operating impossible

www.rohm.com

TSZ02201-0R2R0G100010-1-2

2011.12.19 Rev.001

4/23

TSZ22111・14・001

1 2 345 6 7...26

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