Pin Descriptions

Pin Name

Type

Functions

SDA

I/O

Serial Data

SCL

I

Serial Clock Input

WP

I

Write Protect

GND

P

Ground

Vcc

P

Power Supply

A0-A2

I

Address Input(A0 & A1 NC)

Block Diagram

START STOP

LOGIC

SERIAL CONTROL

LOGIC

SCL

SDA

GND

Vcc

DEVICE ADDRESS

COMPARATOR

LOAD

CCMP

DATA WORD

ADRESS COUNTER

LOAD

INC

Y DECODER

SERIAL MUX

EEPROM

EN

DATA RECOVERY

HIGH VOLTAGE

PUMP/TIMING

DOUT/ACKNOWLEDGE

DIN

DOUT

WP

A0(NC)

A1(NC)

A2

SERIAL DATA (SDA):

The SDA pin is bi-directional for serial data transfer. This pin is

open-drain driven and may be wire-ORed with any number of other open-drain or open-

collector devices.

SERIAL CLOCK (SCL):

The SCL input is used to positive edge clock data into each EEPROM

device and negative edge clock data out of each device.

WRITE PROTECT (WP):

The LR24C08 has a Write Protect pin that provides hardware data

protection. The Write Protect pin allows normal read/write operations when connected to

Table 1

LESHAN RADIO COMPANY, LTD.

V2.1

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