Dear customers,
About the change in the name such as "Oki Electric Industry Co. Ltd." and
"OKI" in documents to OKI Semiconductor Co., Ltd.
The semiconductor business of Oki Electric Industry Co., Ltd. was succeeded to OKI
Semiconductor Co., Ltd. on October 1, 2008.
Therefore, please accept that although
the terms and marks of "Oki Electric Industry Co., Ltd.", “Oki Electric”, and "OKI"
remain in the documents, they all have been changed to "OKI Semiconductor Co., Ltd.".
It is a change of the company name, the company trademark, and the logo, etc. , and
NOT a content change in documents.
October 1, 2008
OKI Semiconductor Co., Ltd.
550-1 Higashiasakawa-cho, Hachioji-shi, Tokyo 193-8550, Japan
http://www.okisemi.com/en/
E2D0036-39-21
¡ Semiconductor
¡ Semiconductor
MSM66V84B
4,194,304-word x 1-bit Serial Register
This version: Feb. 1999
MSM66V84B
Previous version: May. 1997
GENERAL DESCRIPTION
MSM66V84B is a serial register organized as 4,194,304 words x one bit, characterized by medium-
speed, low power consumption operation.
This device has a built-in internal address generation circuit allowing continuous serial read/write
operation by external clock input.
Read/write operation causes the internal address to be incremented automatically by +1.
External address input enables addressing in units of 1024 words. Furthermore, a refresh timer and
a refresh address counter are installed, which makes an external refresh circuit unnecessary. In
addition, this configuration allows lower power consumption.
The device is packaged in 26/20-pin SOJ or 26/20 TSOP having a width of 300 mil.
It is well adapted for storing much data by means of a battery backup. Its combination with our
recording and playback LSI enables the easy implementation of a solid recording and playback
system.
FEATURES
• Configuration
4,194,304 x 1 bit
• Serial access operation
Serial access time
: 1.5
ms
Serial read/write time : 2.5
ms
• Low current drain
100
mA
max. (V
CC
= 3.6 V with data stored and under standard conditions)
• Refresh operation
A self-refresh function is supported.
• Wide operation voltage range
Single 2.7 to 3.6 V
• Addressing
Units of 1024 words
• Process
0.45
mm
double well CMOS process
• Package options :
26/20-pin plastic SOJ (SOJ26/20-P-300-1.27) (Product name : MSM66V84BJS)
26/20-pin plastic TSOP (TSOPII26/20-P-300-1.27-K) (Product name : MSM66V84BTS-K)
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MSM66V84B
BLOCK DIAGRAM
Refresh Timer
Row Decoder
Address
Multiplexer
Refresh Address
Counter
4,194,304
Data Register
TAS
Row Address
Counter
Column Decoder
SAS
I/O Control
SAD
Row Address
Register
Column Address
Counter
Timing
Generator
DIN
DOUT
RWCK
Write Clock
Generator
WE
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MSM66V84B
PIN CONFIGURATION (TOP VIEW)
TEST
1
RWCK
2
NC 3
TEST
4
TEST
5
26 V
CC
25 TEST
24
TEST
23 SAD
22
SAS
TEST
1
RWCK
2
NC 3
TEST
4
TEST
5
26 V
CC
25 TEST
24
TEST
23 SAD
22
SAS
TEST
9
TEST
10
DIN 11
NC 12
V
SS
13
18
TAS
17
CS
16
WE
15 DOUT
14 NC
TEST
9
TEST
10
DIN 11
NC 12
V
SS
13
18
TAS
17
CS
16
WE
15 DOUT
14 NC
NC : No connection
26/20-pin plastic SOJ
NC : No connection
26/20-pin plastic TSOP
(K type)
PIN DESCRIPTION
Pin
25
1, 4, 5
9, 10, 24
2
11
13
15
16
17
18
22
23
26
Symbol
TEST
TEST
RWCK
DIN
V
SS
DOUT
WE
CS
TAS
SAS
SAD
V
CC
Test input
Test input
Read/write clock
Data input
Ground (0 V)
Data output
Write enable
Chip select
Transfer address strobe
Serial address strobe
Serial address data
Power supply (2.7 V to 3.6 V)
Description
Note : All
TEST
pins are to be connected to the power supply.
The TEST pin is to be referenced to the ground level.
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¡ Semiconductor
MSM66V84B
ABSOLUTE MAXIMUM RATINGS
Parameter
Pin Voltage
Output Short-Circuit Current
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
V
T
I
OS
P
D
T
op
T
STG
Condition
Against V
SS
at Ta = 25 °C
Ta = 25 °C
Ta = 25 °C
—
—
Rating
–0.5 to +4.6
50
1
0 to 70
–55 to +150
Unit
V
mA
W
°C
°C
RECOMMENDED OPERATING CONDITIONS
(Ta = 0 to 70°C)
Parameter
Supply Voltage
Supply Voltage
"H" Input Voltage
"L" Input Voltage
Symbol
V
CC
V
SS
V
IH
V
IL
Min.
2.7
0
V
CC
– 0.3
–0.2
Typ.
3.0
0
V
CC
0
Max.
3.6
0
V
CC
+ 0.2
+0.5
Unit
V
V
V
V
ELECTRICAL CHARACTERISTICS
DC characteristics
(V
CC
= 2.7 V to 3.6 V, Ta = 0 to 70°C)
Parameter
"H" Output Voltage
"L" Output Voltage
Input Leakage Current
Output Leakage Current
Supply Current (Operation)
Supply Current (Standby)
Symbol
V
OH
V
OL
I
IL
I
OL
I
CC1
I
CC2
Condition
I
OH
= –0.1 mA
I
OL
= 0.1 mA
V
I
= 0 V to V
CC
V
O
= 0 V to V
CC
V
CC
= 3.6 V, t
RWC
= 2.5
ms
V
CC
= 3.6 V
Min.
V
CC
– 0.5
—
–1
–1
—
—
Max.
—
0.4
+1
+1
10
100
Unit
V
V
mA
mA
mA
mA
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