AT24C64A Datasheet | Atmel

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 - 40C to +125C - Two-wire Serial Interface - Schmitt Trigger, Filtered Inputs for Noise Suppression - Bidirectional Data Transfer Protocol - 400 k Hz 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 mon 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 Serial Data Serial Clock Input 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) 64K (8192 x 8) AT24C32A(1) AT24C64A 1. AT24C32A not remended for new design; replaced by AT24C32D...