Description
The AT93C56A/66A provides 2048/4096 bits of serial electrically-erasable programmable read-only memory (EEPROM). The EEPROM is organized as 128/256 words of 16 bits each when the ORG pin is connected to VCC and 256/512 words of 8 bits each when it is tied to ground. The device is optimized for use in many automotive applications where low-power and low-voltage operations are essential. The AT93C56A/66A is available in space-saving 8-lead JEDEC SOIC and 8-lead TSSOP packages.

FEATUREs
• Medium-voltage and Standard-voltage Operation
   – 2.7 (VCC = 2.7V to 5.5V)
• Automotive Temperature Range –40°C to 125°C
• User-selectable Internal Organization
   – 2K: 256 x 8 or 128 x 16
   – 4K: 512 x 8 or 256 x 16
• Three-wire Serial Interface
• Sequential Read Operation
• 2 MHz Clock Rate
• Self-timed Write Cycle (10 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