AT24C02C View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT24C02C

Two-wire Serial Electrically Erasable and Programmable Read-only Memory

Atmel Corporation 

Atmel AT24C02C

1. 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.

DEVICE/PAGE ADDRESSES (A2, A1, A0): The A2, A1 and A0 pins are device address inputs that are hard wired

for the Atmel® AT24C02C. As many as eight 2K devices may be addressed on a single bus system (device

addressing is discussed in detail under the Device Addressing section).

WRITE PROTECT (WP): AT24C02C has a write protect pin that provides hardware data protection. The write

protect pin allows normal read/write operations when connected to ground (GND). When the write protect pin is

connected to VCC, the write protection feature is enabled and operates as shown in Table 1-1.

Table 1-1. Write Protect

WP Pin

Status

At VCC

At GND

Part of the Array Protected

Atmel 24C02C

Full (2K) Array

Normal Read/Write Operations

3

8700D–SEEPR–8/10

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