FEATURES
● Low power CMOS technology
● ORG pin selectable memory organization
256 x 8 or 128 x 16 bit organization (93C56)
512 x 8 or 256 x 16 bit organization (93C66)
● Single 5 volts only operation
● Max clock at 2 MHz
● Self-timed ERASE and WRITE cycles
● Automatic ERASE before WRITE
● Power on/off data protection circuitry
● Industry standard 3-wire serial I/O
● Device status signal during ERASE/WRITE
cycles
● Sequential READ function
● 1,000,000 ERASE/WRITE cycles guaranteed
● Data retention > 40 years
● 8-pin PDIP/SOIC packages
(SOIC in JEDEC and ElAJ standards)
● Available for extended temperature ranges:
Commercial: 0°C to +70°C
Industrial: -40°C to +85°C
Automotive: -40'C to +125°C
● 1 ms byte write time

DESCRIPTION
The Microchip Technology Inc. 93C56/66 family of
Serial EEPROMs are configurable to either x16 or x8
organization. The ORG pin is used to select the
desired configuration. Advanced CMOS technology
makes this device ideal for low-power non-volatile
memory applications. The 93C56/66 are available in
the standard 8-pin DIP and 8-pin surface mount SOIC
package.
This device offers fast (1 ms) byte write and extended
(-40°C to +125°C) temperature operation. It is recommended that all other applications use Microchip's
93LC56/93LC66.