93C66 PDF Datasheet – 4096-Bit Serial CMOS EEPROM

Part Number: 93C66

Function: 4096-Bit Serial CMOS EEPROM (MICROWIRE Synchronous Bus)

Package: 8-pin SO, 8-pin DIP, 8-pin TSSOP Type

Manufacturer: Fairchild Semiconductor


93C66 pdf


The 93C66 is a 4096-bit CMOS non-volatile EEPROM organized as 256 x 16-bit array. This device features MICROWIRE interface which is a 4-wire serial bus with chipselect (CS), clock (SK), data input (DI) and data output (DO) signals. This interface is compatible to many of standard Microcontrollers and Microprocessors.

There are 7 instructions implemented on the FM93C66 for various Read, Write, Erase, and Write Enable/Disable operations. This device is fabricated using Fairchild Semiconductor floating-gate CMOS process for high reliability, high endurance and low power consumption. […]

93C66 pinout datasheet


1. Wide VCC 2.7V – 5.5V

2.  Typical active current of 200µA
(1) 10µA standby current typical
(2) 1µA standby current typical (L)
(3) 0.1µA standby current typical (LZ)

3. No Erase instruction required before Write instruction

4. Self timed write cycle

5. Device status during programming cycles

93C66 PDF Datasheet