24C02 参数 Datasheet PDF下载

K24C02C/K24C04/K24C08C/K24C16B

2K bits (256 X 8) / 4K bits (512 X 8) / 8K bits (1024 X 8) / 16K bits (2048 X 8)

Two-wire Serial EEPROM

Pin Descriptions

DEVICE/PAGE ADDRESSES (A2, A1 and A0):

The A2, A1 and A0 pins are device address inputs that are hard

wired for the K24C02C. Eight 2K devices may be addressed on a single bus system (device addressing is discussed

in detail under the Device Addressing section).

The K24C04 uses the A2 and A1 inputs for hard wire addressing and a total of four 4K devices may be addressed on a

single bus system. The A0 pin is a no connect and can be connected to ground.

The K24C08C only uses the A2 input for hardwire addressing and a total of two 8K devices may be addressed on a

single bus system. The A0 and A1 pins are no connects and can be connected to ground.

The K24C16B does not use the device address pins, which limits the number of devices on a single bus to one. The

A0, A1, and A2 pins are no connects and can be connected to ground.

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 K24C02C/K24C04/K24C08C/K24C16B has a W rite 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 V

CC

, the write protection feature is enabled and operates as shown in the following

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Table 2: Write Protect

Part of the Array Protected

WP Pin Status

K24C02C

Full (2K) Array

K24C04

Full (4K) Array

K24C08C

Full (8K) Array

K24C16B

Full (16K) Array

At V

CC

At GND

Normal Read / Write Operations

Memory Organization

K24C02C, 2K SERIAL EEPROM:

Internally organized with 32 pages of 8 bytes each, the 2K requires an 8-bit

data word address for random word addressing.

K24C04, 4K SERIAL EEPROM:

Internally organized with 32 pages of 16 bytes each, the 4K requires a 9-bit data

word address for random word addressing.

K24C08C, 8K SERIAL EEPROM:

Internally organized with 64 pages of 16 bytes each, the 8K requires a 10-bit

data word address for random word addressing.

K24C16B, 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.

Spring 2011

V1.3

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003

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