3

Atmel AT24CM01 [DATASHEET]

Atmel-8812E-SEEPROM-AT24CM01-Datasheet_032013

3.

Block Diagram

4.

Pin Description

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.

Serial Data (SDA): The SDA pin is bidirectional 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.

many as four 1-Mbit devices may be addressed on a single bus system (See “Device Addressing” on page 9 for more

GND.

Write Protect (WP): The Write Protect input, when connected to GND, allows normal write operations. When WP is

function.

Table 4-1.

Write Protect

Start

Stop

Logic

V

CC

GND

WP

SCL

SDA

A

2

A

1

Serial

Control

Logic

EN

H.V. Pump/Timing

EEPROM

Data Recovery

Serial MUX

D

Logic

COMP

LOAD

INC

Data Word

Addr/counter

Y DEC

R/W

D

OUT

D

IN

LOAD

Device

Address

Comparator

WP Pin

Status

Part of the Array Protected

AT24CM01

Full Array

At GND

Normal Read/Write Operations