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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 industrial and commercial applications where low power and low voltage operation are essential. The AT24C32A/64A is available in space saving 8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead Mini-MAP (MLP 2x3) and 8-lead TSSOP packages and is accessed via a 2-wire serial interface. In addition, the entire family is available in 2.7V (2.7V to 5.5V) and 1.8V (1.8V to 5.5V) versions.

Features

? Low-Voltage and Standard-Voltage Operation

¨C 2.7 (VCC = 2.7V to 5.5V)

¨C 1.8 (VCC = 1.8V to 5.5V)

? Low-Power Devices (ISB = 6 ?A @ 5.5V) Available

? Internally Organized 4096 x 8, 8192 x 8

? Two-wire Serial Interface

? Schmitt Trigger, Filtered Inputs for Noise Suppression

? Bidirectional Data Transfer Protocol

? 400 kHz (1.8V, 2.5V, 2.7V, 5V) Compatibility

? 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

¨C Endurance: 1 Million Write Cycles

¨C Data Retention: 100 Years

? Automotive Devices Available

? 8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead Mini-MAP (MLP 2x3) and 8-lead TSSOP Packages

? Lead-free/Halogen-free

? Die Sales: Wafer Form, Waffle Pack, and Bumped Wafers