EEPROMs
MN63112S
2K-Bit EEPROM
Overview
The MN63112S is a 2K-bit EEPROM supporting se-
rial I/O and operating on a single power supply with a
voltage between 1.8 and 5.5 V. It provides the following
pins for easy interfacing to microprocessors or
microcontrollers: chip select (CS), serial clock (SK), data
input (DI), and data output (DO). It includes a built-in
timer for use in automatically erasing and writing data
during data update operations.
The ORG pin provides a choice of two memory orga-
nizations: 256
×
8 bits when ORG is connected to ground
and 128
×
16 bits when ORG is connected to V
CC
. An
internal pull-up resistor makes the latter the default con-
figuration.
Conversion of peripheral circuits to CMOS realizes
great reductions in power consumption. Use of floating
gate memory cells and a built-in error correction circuit
ensures reliable operation for 10
5
write cycles.
Pin Assignment
CS
SK
DI
DO
1
2
3
4
8
7
6
5
V
CC
N.C.
ORG
GND
( TOP VIEW )
SOP008-P-0225
Features
Choice of memory organizations: 256
×
8 bits and
128
×
16 bits
Floating gate memory cells
Function blocking erroneous writes
Low power consumption
- Reads: max. 6.6 mW for V
CC
= 3.3 V
- Standby: max. 66
µW
for V
CC
= 3.3 V
Built-in self-timer for use in automatically erasing
and writing
Built-in error correction circuit that guarantees 10
5
write cycles
10-year data preservation period
Applications
Keyless entry systems, cordless telephones, storage for
recognition and adjustment data for terminals, etc.
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EEPROMs
Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
Symbol
CS
SK
DI
DO
GND
ORG
N.C.
V
CC
Pin Name
Chip select
Serial clock
Data input
Data output
Ground
Memory configuration selection
No connection
Power supply voltage
MN63112S
Electrical Characteristics
V
CC
=1.8V to 5.5V, Ta=–10˚C to +70˚C
2 to 3 V Operation
5 V Operation
Parameter
Power supply voltage
Input leakage current at "L" level
Input leakage current at "H" level
Output leakage current
Input voltage at "L" level
Input voltage at "H" level
V
CC
power supply current
(during operation)
V
CC
power supply current
(during standby)
Output voltage for "L" level
(during reads)
Output voltage for "H" level
(during reads)
Symbol
V
CC
I
LIL
I
LIH
I
LO
V
IL
V
IH
I
CC
I
SB
V
OL
V
OH
Test Conditions
min
1.8
ORG pin
Other pins
–100
–10
–10
—
– 0.1
0.8
×
V
CC
SK=250kHz
SK=1MHz
CS, SK, DI="L"
DO = open
I
OL
=400
µA
I
OL
=2.1mA
I
OH
=–10
µA
I
OH
=–100
µA
—
—
—
—
—
V
CC
– 0.3
—
max
3.3
10
10
10
10
0.2
×
V
CC
V
CC
+0.3
2.0
—
20
0.3
—
—
—
min
4.5
–150
–10
–10
—
– 0.1
3.0
—
—
—
—
—
—
V
CC
– 0.7
max
5.5
10
10
10
10
0.7
V
CC
+0.3
—
3.0
30
—
0.45
—
—
Unit
V
µA
µA
µA
V
V
mA
µA
V
V
Function Descriptions
Orders
READ
WRITE
EWEN
EWDS
Start
Bit
1
1
1
1
Operation
Code
Address
256
×
8
A7–A0
A7–A0
11xxxxxxx
00xxxxxxx
128
×
16
A6–A0
A6–A0
11xxxxxx
00xxxxxx
D7–D0
256
×
8
Data
128
×
16
D15–D0
Contents
Read
Write
Enable erase/write
Disable erase/write
10
01
00
00
Note:
x
means "don't care".
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