Fairchild Semiconductor NM93C66ALEM8X, NM93C66ALEM8, NM93C66AEN, NM93C66AEMT8X, NM93C66AZDICE Datasheet
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NM93C66A Rev. E.1
NM93C66A 4K-Bit Serial CMOS EEPROM
(MICROWIRE
TM
Synchronous Bus)
February 2000
© 2000 Fairchild Semiconductor International
NM93C66A
4K-Bit Serial CMOS EEPROM
(MICROWIRE™ Synchronous Bus)
General Description
NM93C66A 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 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
NM93C66A 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 NM93C66A 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.
Functional Diagram
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
INSTRUCTION
DECODER
CONTROL LOGIC
AND CLOCK
GENERATORS
HIGH VOLTAGE
GENERATOR
AND
PROGRAM
TIMER
INSTRUCTION
REGISTER
ADDRESS
REGISTER
EEPROM ARRAY
READ/WRITE AMPS
DATA IN/OUT REGISTER
16/8 BITS
DECODER
16
16
DATA OUT BUFFER
CS
SK
DI
ORG
DO
V
SS
V
CC
2
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NM93C66A Rev. E.1
NM93C66A 4K-Bit Serial CMOS EEPROM
(MICROWIRE
TM
Synchronous Bus)
Connection Diagram
Dual-In-Line Package (N)
8–Pin SO (M8) and 8–Pin TSSOP (MT8)
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
ORG Organization
NC No Connect
V
CC
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
NM 93 C XX A LZ E XXX Letter Description
Package N 8-pin DIP
M8 8-pin SO
MT8 8-pin TSSOP
Temp. Range None 0 to 70°C
V -40 to +125°C
E -40 to +85°C
Voltage Operating Range Blank 4.5V to 5.5V
L 2.7V to 5.5V
LZ 2.7V to 5.5V and
<1µA Standby Current
A x8 or x16 configuration
Density 66 4096 bits
C CMOS
CS Data protect and sequential
read
Interface 93 MICROWIRE
Fairchild Memory Prefix
V
CC
ORG
GND
CS
SK
DI
DO
1
2
3
4
8
7
6
5
NC
3
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NM93C66A Rev. E.1
NM93C66A 4K-Bit Serial CMOS EEPROM
(MICROWIRE
TM
Synchronous Bus)
Absolute Maximum Ratings (Note 1)
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
Operating Conditions
Ambient Operating Temperature
NM93C66A 0°C to +70°C
NM93C66AE -40°C to +85°C
NM93C66AV -40°C to +125°C
Power Supply (V
CC
) 4.5V to 5.5V
DC and AC Electrical Characteristics V
CC
= 4.5V to 5.5V unless otherwise specified
Symbol Parameter Conditions Min Max Units
I
CCA
Operating Current CS = VIH, SK=1.0 MHz 1 mA
I
CCS
Standby Current CS = V
IL
50 µA
I
IL
Input Leakage VIN = 0V to V
CC
±-1 µA
I
OL
Output Leakage (Note 2)
I
ILO
Input Leakage ORG Pin ORG tied to V
CC
-1 1 µA
ORG tied to VSS (Note 3) -2.5 2.5
V
IL
Input Low Voltage -0.1 0.8 V
V
IH
Input High Voltage 2 VCC +1
V
OL1
Output Low Voltage IOL = 2.1 mA 0.4 V
V
OH1
Output High Voltage IOH = -400 µA 2.4
V
OL2
Output Low Voltage IOL = 10 µA 0.2 V
V
OH2
Output High Voltage IOH = -10 µAV
CC
- 0.2
f
SK
SK Clock Frequency (Note 4) 1 MHz
t
SKH
SK High Time 0°C to +70°C 250 ns
-40°C to +125°C 300
t
SKL
SK Low Time 250 ns
t
SKS
SK Setup Time 50 ns
t
CS
Minimum CS Low Time (Note 5) 250 ns
t
CSS
CS Setup Time 100 ns
t
DH
DO Hold Time 70 ns
t
DIS
DI Setup Time 100 ns
t
CSH
CS Hold Time 0 ns
t
DIH
DI Hold Time 20 ns
t
PD
Output Delay 500 ns
t
SV
CS to Status Valid 500 ns
t
DF
CS to DO in Hi-Z CS = V
IL
100 ns
t
WP
Write Cycle Time 10 ms
4
www.fairchildsemi.com
NM93C66A Rev. E.1
NM93C66A 4K-Bit Serial CMOS EEPROM
(MICROWIRE
TM
Synchronous Bus)
Absolute Maximum Ratings (Note 1)
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
Operating Conditions
Ambient Operating Temperature
NM93C66AL/LZ 0°C to +70°C
NM93C66ALE/LZE -40°C to +85°C
NM93C66ALV/LZV -40°C to +125°C
Power Supply (V
CC
) 2.7V to 5.5V
DC and AC Electrical Characteristics V
CC
= 2.7V to 5.5V unless otherwise specified
Symbol Parameter Conditions Min Max Units
I
CCA
Operating Current CS = VIH, SK=1.0 MHz 1 mA
I
CCS
Standby Current CS = V
IL
L 10 µA
LZ (2.7V to 4.5V) 1 µA
I
IL
Input Leakage VIN = 0V to V
CC
±1 µA
I
OL
Output Leakage (Note 2)
I
ILO
Input Leakage ORG Pin ORG tied to V
CC
-1 1 µA
ORG tied to VSS (Note 3) -2.5 2.5
V
IL
Input Low Voltage -0.1 0.15V
CC
V
V
IH
Input High Voltage 0.8V
CC
VCC +1
V
OL
Output Low Voltage IOL = 10µA 0.1V
CC
V
V
OH
Output High Voltage IOH = -10µA 0.9V
CC
f
SK
SK Clock Frequency (Note 4) 0 250 KHz
t
SKH
SK High Time 1 µs
t
SKL
SK Low Time 1 µs
t
SKS
SK Setup Time 0.2 µs
t
CS
Minimum CS Low Time (Note 5) 1 µs
t
CSS
CS Setup Time 0.2 µs
t
DH
DO Hold Time 70 ns
t
DIS
DI Setup Time 0.4 µs
t
CSH
CS Hold Time 0 ns
t
DIH
DI Hold Time 0.4 µs
t
PD
Output Delay 2 µs
t
SV
CS to Status Valid 1 µs
t
DF
CS to DO in Hi-Z CS = V
IL
0.4 µs
t
WP
Write Cycle Time 15 ms
Capacitance TA = 25°C, f = 1 MHz (Note 6)
Symbol Test Typ Max Units
C
OUT
Output Capacitance 5 pF
C
IN
Input Capacitance 5 pF
Note 1: Stress above those listed under “Absolute Maximum Ratings” may cause permanent damage
to the device. This is a stress rating only and functional operation of the device at these or any other
conditions above those indicated in the operational sections of the specification is not implied. Exposure
to absolute maximum rating conditions for extended periods may affect device reliability.
Note 2: Typical leakage values are in the 20nA range.
Note 3: ORG pin may draw >1µA when in x8 mode due to the internal pull-up transistor.
Note 4: The shortest allowable SK clock period = 1/f
SK
(as shown under the fSK parameter). Maximum
SK clock speed (minimum SK period) is determined by the interaction of several AC parameters stated
in the datasheet. Within this SK period, both t
SKH
and t
SKL
limits must be observed. Therefore, it is not
allowable to set 1/fSK = t
SKHminimum
+ t
SKLminimum
for shorter SK cycle time operation.
Note 5: CS (Chip Select) must be brought low (to V
IL
) for an interval of tCS in order to reset all internal
device registers (device reset) prior to beginning another opcode cycle. (This is shown in the opcode
diagram on the following page.)
Note 6: This parameter is periodically sampled and not 100% tested.
AC Test Conditions
VCC Range VIL/V
IH
VIL/V
IH
VOL/V
OH
IOL/I
OH
Input Levels Timing Level Timing Level
2.7V ≤ VCC ≤ 5.5V 0.3V/1.8V 1.0V 0.8V/1.5V ±10µA
(Extended Voltage Levels)
4.5V ≤ VCC ≤ 5.5V 0.4V/2.4V 1.0V/2.0V 0.4V/2.4V 2.1mA/-0.4mA
(TTL Levels)
Output Load: 1 TTL Gate (CL = 100 pF)
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