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AT93C56

ATMEL Corporation
Part Number AT93C56
Manufacturer ATMEL Corporation
Description 3-wire Serial EEPROMs
Published Mar 23, 2005
Detailed Description Features • Low-voltage and Standard-voltage Operation – 2.7 (VCC = 2.7V to 5.5V) – 1.8 (VCC = 1.8V to 5.5V) • User-selec...
Datasheet PDF File AT93C56 PDF File

AT93C56
AT93C56

Overview
Features • 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 – 1K: 128 x 8 or 64 x 16 – 2K: 256 x 8 or 128 x 16 – 4K: 512 x 8 or 256 x 16 • Three-wire Serial Interface • 2 MHz Clock Rate (5V) • Self-timed Write Cycle (10 ms max) • High Reliability – Endurance: 1 Million Write Cycles – Data Retention: 100 Years • Automotive Grade, Extended Temperature and Lead-Free/Halogen-Free Devices Available • 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead MAP, 8-lead TSSOP, and 8-ball dBGA2 Packages Description The AT93C46/56/66 provides 1024/2048/4096 bits of serial electrically erasable programmable read-only memory (EEPROM), organized as 64/128/256 words of 16 bits each (when the ORG pin is connected to VCC), and 128/256/512 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 AT93C46/56/66 is available in space-saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead MAP, 8-lead TSSOP, and 8-lead dBGA2 packages.
The AT93C46/56/66 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 DO pin.
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 AT93C46/56/66 is available in 2.
7V to 5.
5V and 1.
8V to 5.
5V versions.
Table 1.
Pin Configurations Pin Name Function CS Chip Select SK Serial Data Clock DI Serial Data Input DO Serial Data Output GND Ground VCC Power Supp...


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