MICROCHIP AT93C56A-10TU-2.7

The AT93C56A/66A provides 2048/4096 bits of serial electrically erasable programmable read-only memory (EEPROM) 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 the ORG pin is tied to ground). The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operations are essential.

The AT93C56A/66A is enabled through the Chip Select pin (CS) and accessed via a three-wire serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock (SK). Upon receiving a read instruction at DI, the address is decoded and the data is clocked out serially on the data output pin DO. The write cycle is completely self-timed and no separate erase cycle is required before write. The write cycle is only enabled when the part is in the Erase/Write Enable State. When CS is brought “high” following the initiation of a write cycle, the DO pin outputs the Ready/Busy status of the part.

The AT93C56A/66A is available in 2.7V to 5.5V and 1.8V to 5.5V versions.

• Low-voltage and Standard-voltage Operation – 2.7 (VCC=2.7V to 5.5V) – 1.8 (VCC=1.8V to 5.5V)
• User-selectable Internal Organization – 2K: ±256x8 or 128x16 – 4K: 512x8 or 256x16
• Three-wire Serial Interface
• Sequential Read Operation
• 2 MHz Clock Rate (5V)
• Self-timed Write Cycle (10 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 Ultra Thin mini(MLP 2x3), 8-lead Ultra Lead Frame Land Grid Array (ULA), 8-lead TSSOP and 8-ball dBGA2 Packages