| 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 – 2.7 (VCC = 2.7V to 5.5V) – 1.8 (VCC = 1.8V to 5.5V) • Low-Power Devices (ISB = 6 µA @ 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 – Endurance: 1 Million Write Cycles – 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 |
