FM93C66 Datasheet | Fairchild Semiconductor

Description FM93C66 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 patible 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. “LZ” and “L” versions of FM93C66 offer very low standby current making them suitable for low power applications. This device is offered in both SO and TSSOP packages for small space considerations. Features I Wide VCC 2.7V - 5.5V I Typical active current of 200µA 10µA standby current typical 1µA standby current typical (L) 0.1µA standby current typical (LZ) I No Erase instruction required before Write instruction I Self timed write cycle I Device status during programming cycles I 40 year data retention I Endurance: 1,000,000 data changes I Packages available: 8-pin SO, 8-pin DIP, 8-pin TSSOP Functional Diagram CS SK DI INSTRUCTION REGISTER VCC INSTRUCTION DECODER CONTROL LOGIC AND CLOCK GENERATORS ADDRESS REGISTER HIGH VOLTAGE GENERATOR AND PROGRAM TIMER DECODER EEPROM ARRAY 16 READ/WRITE AMPS 16 VSS DATA IN/OUT REGISTER 16 BITS DO DATA OUT BUFFER © 2000 Fairchild Semiconductor International FM93C66 Rev. C.1 .fairchildsemi. FM93C66 4096-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) Connection Diagram Dual-In-Line Package (N) 8- Pin SO (M8) and 8- Pin TSSOP (MT8) CS SK DI DO 1 2 3 4 8 7 6 5 VCC NC NC GND Top View Package Number N08E, M08A and MTC08 Pin Names CS SK DI DO GND NC VCC Chip Select Serial Data Clock Serial Data Input Serial Data Output Ground No Connect Power Supply NOTE: Pins designated as "NC" are typically unbonded pins. However some of them...