Document
FM93C56 2048-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus)
July 2000
FM93C56 2048-Bit Serial CMOS EEPROM (MICROWIRE™ Synchronous Bus)
General Description
FM93C56 is a 2048-bit CMOS non-volatile EEPROM organized as 128 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 FM93C56 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 FM93C56 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 FM93C56 Rev. C.1
1
www.fairchildsemi.com
FM93C56 2048-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 are bonded for special testing purposes. Hence if a signal is applied to these pins, care should be taken that the voltage applied on these pins does not exceed the VCC applied to the device. This will ensure proper operation.
Ordering Information FM 93 C XX LZ E XXX
Package N M8 MT8 None V E Blank L LZ 56 C CS Interface 93
Letter Description
8-pin DIP 8-pin SO 8-pin TSSOP 0 to 70°C -40 to +125°C -40 to +85°C 4.5V to 5.5V 2.7V to 5.5V 2.7V to 5.5V and <1µA Standby Current 2048 bits CMOS Data protect and sequential read MICROWIRE
Temp. Range
Voltage Operating Range
Density
Fairchild Memory Prefix
2
FM93C56 Rev. C.1
www.fairchildsemi.com
FM93C56 2048-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus)
Absolute Maximum Ratings (Note 1)
Ambient Storage Temperature All Input or Output Voltages with Respect to Ground Lead Tem.