AT24C16B(2006) データシートの表示（PDF） - Atmel Corporation

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AT24C16B
(Rev.:2006)

Two-wire Serial EEPROM

Atmel Corporation 

AT24C16B Preliminary

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 AT24C16B does not use the device

address pins, which limits the number of devices on a single bus to one. The A0, A1, A2

are no connects and can be connected to ground.

WRITE PROTECT (WP): The AT24C16B has a write protect pin that provides hardware

data protection. The write protect pin allows normal read/write operations when con-

nected to ground (GND). When the write protect pin is connected to VCC, the write

protection feature is enabled and operates as shown in Table 2.

Table 2. Write Protect

Part of the Array Protected

WP Pin

Status

At VCC

At GND

24C16B

Full (16K) Array

Normal Read/Write Operations

Memory Organization AT24C16B, 16K SERIAL EEPROM: Internally organized with 128 pages of 16 bytes

each, the 16K requires an 11-bit data word address for random word addressing.

3

5175A–SEEPR–09/06

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