Semiconductor Memories｜Basic

Pin Layout and Functions

table of contents

・I²C
・SPI
・Microwire

I²C

BR24xxx

Pin Name	Input/Output	Function
SCL	Input	Serial Clock Input
SDA	Input/Output	Serial Clock Input / Output

Controls the EEPROM using 2 lines
Slave addresses can be set at each pin (A0, A1, A2).
This allows up to 8 EEPROMs to be connected on the same bus.

SPI

BR25xxx

Pin Name	Input/Output	Function
CSB	Input	Chip Select Input
SCK	Input	Serial Clock Input
SI	Input	Serial Data Input
SO	Output	Serial Data Output

Controls the EEPROM using 4 lines.
HOLDB pin makes it possible to serial communication.

Microwire

BR93xxx

Pin Name	Input/Output	Function
CSB	Input	Chip Select Input
SK	Input	Serial Clock Input
DI	Input	Serial Data Input
DO	Output	Serial Data Output

Controls the EEPROM using 4 lines

electronics-basics

Semiconductor Memories

Basic

What is Semiconductor Memory? ＋