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Fairchild Semiconductor Electronic Components Datasheet



93C66

4096-Bit Serial CMOS EEPROM (MICROWIRE Synchronous Bus)


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93C66 pdf
July 2000
FM93C66
4096-Bit Serial CMOS EEPROM
(MICROWIRE™ Synchronous Bus)
General 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 compat-
ible 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 consid-
erations.
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
ADDRESS
REGISTER
INSTRUCTION
DECODER
CONTROL LOGIC
AND CLOCK
GENERATORS
DECODER
EEPROM ARRAY
16
READ/WRITE AMPS
16
DATA IN/OUT REGISTER
16 BITS
DO DATA OUT BUFFER
VCC
HIGH VOLTAGE
GENERATOR
AND
PROGRAM
TIMER
VSS
© 2000 Fairchild Semiconductor International
FM93C66 Rev. C.1
1
www.fairchildsemi.com



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93C66 pdf
Connection Diagram
Dual-In-Line Package (N)
8–Pin SO (M8) and 8–Pin TSSOP (MT8)
CS 1
SK 2
DI 3
DO 4
8 VCC
7 NC
6 NC
5 GND
Top View
Package Number
N08E, M08A and MTC08
Pin Names
CS Chip Select
SK Serial Data Clock
DI Serial Data Input
DO Serial Data Output
GND
Ground
NC No Connect
VCC 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
Letter Description
Package
Temp. Range
Voltage Operating Range
Density
Interface
N
M8
MT8
8-pin DIP
8-pin SO
8-pin TSSOP
None
V
E
0 to 70°C
-40 to +125°C
-40 to +85°C
Blank
L
LZ
4.5V to 5.5V
2.7V to 5.5V
2.7V to 5.5V and
<1µA Standby Current
66 4096 bits
C CMOS
CS Data protect and sequential
read
93 MICROWIRE
Fairchild Memory Prefix
FM93C66 Rev. C.1
2 www.fairchildsemi.com



Part Number 93C66
Description 4096-Bit Serial CMOS EEPROM (MICROWIRE Synchronous Bus)
Maker Fairchild Semiconductor - Fairchild Semiconductor
Total Page 13 Pages
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