AT24C1024 Datasheet, PDF (1/19 Pages) ATMEL Corporation – 2-wire Serial EEPROM 1M (131,072 x 8)

Features
• Low-voltage Operation
– 2.7 (V_CC = 2.7V to 5.5V)
• Internally Organized 131,072 x 8
• 2-wire Serial Interface
• Schmitt Triggers, Filtered Inputs for Noise Suppression
• Bi-directional Data Transfer Protocol
• 400 kHz (2.7V) and 1 MHz (5V) Clock Rate
• Write Protect Pin for Hardware and Software Data Protection
• 256-byte Page Write Mode (Partial Page Writes Allowed)
• Random and Sequential Read Modes
• Self-timed Write Cycle (5 ms Typical)
• High Reliability
– Endurance: 100,000 Write Cycles/Page
– Data Retention: 40 Years
• 8-lead PDIP, 8-lead EIAJ SOIC, 8-lead LAP and 8-ball dBGA^TM Packages
2-wire Serial
EEPROM
1M (131,072 x 8)
Description
The AT24C1024 provides 1,048,576 bits of serial electrically erasable and program-
mable read only memory (EEPROM) organized as 131,072 words of 8 bits each. The
device’s cascadable feature allows up to 2 devices to share a common 2-wire bus. The
device is optimized for use in many industrial and commercial applications where low-
power and low-voltage operation are essential. The devices are available in space-
saving 8-lead PDIP, 8-lead EIAJ SOIC, 8-lead Leadless Array (LAP) and 8-ball dBGA
packages. In addition, the entire family is available in 2.7V (2.7V to 5.5V) versions.
AT24C1024
Pin Configurations
Pin Name
A1
SDA
SCL
WP
NC
Function
Address Input
Serial Data
Serial Clock Input
Write Protect
No Connect
8-lead SOIC
NC 1
A1 2
NC 3
GND 4
8 VCC
7 WP
6 SCL
5 SDA
8-lead PDIP
NC 1
A1 2
NC 3
GND 4
8 VCC
7 WP
6 SCL
5 SDA
8-lead Leadless Array
VCC 8
WP 7
SCL 6
SDA 5
1 NC
2 A1
3 NC
4 GND
Bottom View
8-ball dBGA
VCC 8
WP 7
SCL 6
SDA 5
1 NC
2 A1
3 NC
4 GND
Bottom View
Rev. 1471H–SEEPR–03/03
1