AT24C1024_05 Datasheet, PDF (1/18 Pages) ATMEL Corporation – Two-wire Serial EEPROM

Features
• Low-voltage Operation
– 2.7 (V_CC = 2.7V to 5.5V)
• Internally Organized 131,072 x 8
• Two-wire Serial Interface
• Schmitt Triggers, Filtered Inputs for Noise Suppression
• Bidirectional 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-lead SAP Packages
• Die Sales: Wafer Form, Waffle Pack and Bumped Die
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 two devices to share a common two-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-lead
SAP packages. In addition, the entire family is available in 2.7V (2.7V to 5.5V)
versions.
Table 1. Pin Configurations
Pin Name
Function
A1
Address Input
SDA
Serial Data
SCL
Serial Clock Input
WP
Write Protect
NC
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-lead SAP
VCC 8
WP 7
SCL 6
SDA 5
1 NC
2 A1
3 NC
4 GND
Bottom View
Two-wire Serial
EEPROM
1M (131,072 x 8)
AT24C1024
Rev. 1471N–SEEPR–12/05
1