AT24C128_07 Datasheet, PDF (1/17 Pages) ATMEL Corporation – Two-wire Automotive Temperature Serial EEPROMs

Features
• Low-voltage and Standard-voltage Operation
– 2.7 (V_CC = 2.7V to 5.5V)
• Internally Organized 16,384 x 8 and 32,768 x 8
• Two-wire Serial Interface
• Schmitt Trigger, Filtered Inputs for Noise Suppression
• Bidirectional Data Transfer Protocol
• 400 kHz Compatibility
• Write Protect Pin for Hardware and Software Data Protection
• 64-byte Page Write Mode (Partial Page Writes Allowed)
• Self-timed Write Cycle (5 ms Max)
• High Reliability
– Data Retention: 40 Years
• Lead-free/Halogen-free Devices Available
• 8-lead JEDEC SOIC and 8-lead TSSOP
Description
The AT24C128/256 provides 131,072/262,144 bits of serial electrically erasable and
programmable read only memory (EEPROM) organized as 16,384/32,768 words of 8
bits each. The device’s cascadable feature allows up to 4 devices to share a common
Two-wire bus. The device is optimized for use in many automotive applications where
low power and low voltage operation are essential. The devices are available in
space-saving 8-lead JEDEC SOIC and 8-lead TSSOP packages. In addition, the
entire family is available in 2.7V (2.7V to 5.5V) version.
Two-wire
Automotive
Temperature
Serial
EEPROMs
128K (16,384 x 8)
256K (32,768 x 8)
Table 1. Pin Configuration
Pin Name
Function
A0 - A1
Address Inputs
SDA
Serial Data
SCL
Serial Clock Input
WP
Write Protect
NC
No Connect
GND
Ground
8-lead TSSOP
A0 1
A1 2
NC 3
GND 4
8 VCC
7 WP
6 SCL
5 SDA
8-lead SOIC
A0 1
A1 2
NC 3
GND 4
8 VCC
7 WP
6 SCL
5 SDA
AT24C128
AT24C256
Rev. 5121B–SEEPR–2/07
1