Two-wire Serial EEPROM
Features
• Standard-Voltage Operation
– 2.7 (VCC = 2.7V to 5.5V) • Internally Organized 4096 x 8 (32K), 8192 x 8 (64K) •...
Description
Features
Standard-Voltage Operation
– 2.7 (VCC = 2.7V to 5.5V) Internally Organized 4096 x 8 (32K), 8192 x 8 (64K) Automotive Temperature Range –40C to +125C Two-wire Serial Interface Schmitt Trigger, Filtered Inputs for Noise Suppression Bidirectional Data Transfer Protocol 400 kHz Clock Rate Write Protect Pin for Hardware Data Protection 32-byte Page Write Mode (Partial Page Writes Allowed) Self-timed Write Cycle (5 ms Max) High Reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years Lead-free/Halogen-free Devices Available 8-lead JEDEC SOIC and 8-lead TSSOP Packages
Description
The AT24C32A/64A provides 32,768/65,536 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 4096/8192 words of 8 bits each. The device’s cascadable feature allows up to 8 devices to share a common twowire bus. The device is optimized for use in many automotive applications where low power and low voltage operation are essential. The AT24C32A/64A is available in space saving 8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via a 2-wire serial interface and is available in a 2.7V (2.7V to 5.5V) version.
Table 1. Pin Configuration
Pin Name Function
A0 – A2
Address Inputs
SDA
Serial Data
SCL
Serial Clock Input
WP
Write Protect
8-lead SOIC
A0 1 A1 2 A2 3 GND 4
8 VCC 7 WP 6 SCL 5 SDA
8-lead TSSOP
A0 1 A1 2 A2 3 GND 4
8 VCC 7 WP 6 SCL 5 SDA
Two-wire Automotive Serial EEPROM 32K (4096 x 8) 6...
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