FM93C66A General Description
FM93C66A 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. his interface is compatible to many of standard Microcontrollers and Microprocessors.This device offers a pin (ORG), using which, the user can select the format of the data (16-bit or 8-bit). If ORG is tied to GND, then 8-bit format is selected, while if ORG is tied to VCC, then 16-bit format is selected. There are 7 instructions implemented on the FM93C66A 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 FM93C66A offer very low standby current making them suitable for low power pplications. This device is offered in both SO and TSSOP packages for small space considerations.
FM93C66A Maximum Ratings
Ambient Storage Temperature -65°C to +150°C
All Input or Output Voltages +6.5V to -0.3V
with Respect to Ground
Lead Temperature
(Soldering, 10 sec.) +300°C
ESD rating 2000V
FM93C66A Features
Wide VCC 2.7V - 5.5V
User selectable organization
x16 (ORG = 1)
x8 (ORG = 0)
Typical active current of 200µA
10µA standby current typical
1µA standby current typical (L)
0.1µA standby current typical (LZ)
No Erase instruction required before Write instruction
Self timed write cycle
Device status during programming cycles
40 year data retention
Endurance: 1,000,000 data changes
Packages available: 8-pin SO, 8-pin DIP, 8-pin TSSOP
FM93C66A Connection Diagram
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