AT24C04C 데이터 시트보기 (PDF) - Atmel Corporation

부품명

상세내역

제조사

AT24C04C

I2C-Compatible, (2-wire) Serial EEPROM 4-Kbit (512 x 8), 8-Kbit (1024 x 8)

Atmel Corporation 

3. 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 and A1): The AT24C04C uses the A2 and A1 inputs for hard wire addressing allowing a

total of four 4K devices to be addressed on a single bus system. Pin 1 is a no connect and can be connected to ground

(see Section 6. “Device Addressing” on page 10). The AT24C08C only uses the A2 input for hardware 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 (see Section 6. “Device Addressing” on page 10).

Write Protect (WP): AT24C04C/08C 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 3-1.

Table 3-1. Write Protect

WP Pin

Status

At VCC

At GND

Part of the Array Protected

Atmel AT24C04C/08C

Full array

Normal read/write operations

Atmel AT24C04C/08C [DATASHEET]

4

Atmel-8787D-SEEPROM-AT24C04C,08C-Datasheet_042013

Share Link: