NM93C86A
16K-Bit Serial CMOS EEPROM
(MICROWIRE™ Synchronous Bus)
General Description
Features
NM93C86A is a 16,384-bit CMOS non-volatile EEPROM organized as 1024 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. 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 16bit format is selected. There are 7 instructions implemented on the
NM93C86A 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.
I Wide VCC 2.7V - 5.5V
“LZ” and “L” versions of NM93C86A 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.
I Endurance: 1,000,000 data changes
I User selectable organization
x16 (ORG = 1)
x8 (ORG = 0)
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 Packages available: 8-pin SO, 8-pin DIP, 8-pin TSSOP
Functional Diagram
VCC
CS
INSTRUCTION
DECODER
CONTROL LOGIC
AND CLOCK
GENERATORS
SK
DI
INSTRUCTION
REGISTER
HIGH VOLTAGE
GENERATOR
AND
PROGRAM
TIMER
ADDRESS
REGISTER
ORG
DECODER
EEPROM ARRAY
16
READ/WRITE AMPS
VSS
16
DATA IN/OUT REGISTER
16/8 BITS
DO
© 2000 Fairchild Semiconductor International
NM93C86A Rev. F.1
DATA OUT BUFFER
1
www.fairchildsemi.com
NM93C86A 16K-Bit Serial CMOS EEPROM
(MICROWIRETM Synchronous Bus)
February 2000
