BR24A08-WM(2009) Просмотр технического описания (PDF) - ROHM Semiconductor

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Компоненты Описание

производитель

BR24A08-WM
(Rev.:2009)

High Reliability Series EEPROMs I2C BUS

ROHM Semiconductor 

BR24A□□-WM series

●Block diagram

Technical Note

*2 A0 1

*2 A1 2

*1

7bit 11bit

8bit 12bit

9bit 13bit

10bit

Address

decoder

1Kbit~64Kbit EEPROM array

7bit 11bit

*1

8bit

9bit

12bit

13bit

10bit

Slave - word

address register

8bit

Data

register

8 Vcc

7 WP

*2 A2 3

GND 4

START

STOP

Control circuit

ACK

High voltage

generating circuit

Power source

voltage detection

6 SCL

5 SDA

＊1 7bit : BR24A01A-WM

8bit : BR24A02-WM

9bit : BR24A04-WM

10bit : BR24A08-WM

11bit : BR24A16-WM

12bit : BR24A32-WM

13bit : BR24A64-WM

＊2 A0=N.C.

A0, A1=N.C.

A0, A1= N.C. A2=Don’t Use

: BR24A04-WM

: BR24A08-WM

: BR24A16-WM

Fig.2 Block diagram

●Pin assignment and description

A0 1

8 Vcc

BR24A01A-WM

A1 2 BR24A02-WM 7 WP

BR24A04-WM

A2

3

BR24A08-WM

BR24A16-WM

6 SCL

BR24A32-WM

GND 4 BR24A64-WM 5 SDA

Terminal

name

A0

A1

A2

GND

SDA

SCL

WP

Vcc

Input /

output

Function

BR24A01A-WM BR24A02-WM BR24A04-WM BR24A08-WM BR24A16-WM BR24A32-WM BR24A64-WM

Input

Slave address setting

Not connected

Slave address setting

Input

Slave address setting

Not connected

Slave address setting

Input

Slave address setting

Not used

Slave address setting

-

Input /

output

Input

Reference voltage of all input / output, 0V

Slave and word address, Serial data input serial data output

Serial clock input

Input

Write protect terminal

-

Connect the power source.

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4/17

2009.08 - Rev.C

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