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/
E2G0136-18-11
¡ Semiconductor
MD51V65400
¡ Semiconductor
This version: Mar. 1998
MD51V65400
16,777,216-Word
¥
4-Bit DYNAMIC RAM : FAST PAGE MODE TYPE
DESCRIPTION
The MD51V65400 is a 16,777,216-word
¥
4-bit dynamic RAM fabricated in Oki's silicon-gate CMOS
technology. The MD51V65400 achieves high integration, high-speed operation, and low-power
consumption because Oki manufactures the device in a quadruple-layer polysilicon/double-layer
metal CMOS process. The MD51V65400 is available in a 32-pin plastic SOJ or 32-pin plastic TSOP.
FEATURES
• 16,777,216-word
¥
4-bit configuration
• Single 3.3 V power supply,
±0.3
V tolerance
• Input
: LVTTL compatible, low input capacitance
• Output : LVTTL compatible, 3-state
• Refresh :
RAS-only
refresh
: 4096 cycles/64 ms
CAS
before
RAS
refresh, hidden refresh
: 4096 cycles/64 ms
• Fast page mode, read modify write capability
•
CAS
before
RAS
refresh, hidden refresh,
RAS-only
refresh capability
• Package options:
32-pin 400 mil plastic SOJ
(SOJ32-P-400-1.27)
(Product : MD51V65400-xxJA)
32-pin 400 mil plastic TSOP
(TSOPII32-P-400-1.27-K) (Product : MD51V65400-xxTA)
xx indicates speed rank.
PRODUCT FAMILY
Family
MD51V65400-50
MD51V65400-60
Access Time (Max.)
t
RAC
t
AA
t
CAC
t
OEA
50 ns 25 ns 13 ns 13 ns
60 ns 30 ns 15 ns 15 ns
Cycle Time
Power Dissipation
(Min.)
Operating (Max.) Standby (Max.)
90 ns
110 ns
504 mW
432 mW
1.8 mW
1/15
¡ Semiconductor
PIN CONFIGURATION (TOP VIEW)
V
CC
1
32 V
SS
V
CC
1
32 V
SS
DQ1 2
31 DQ4
29 NC
28 NC
27 NC
25
OE
DQ1 2
DQ2 3
NC 4
NC 5
31 DQ4
DQ2 3
NC 4
NC 5
NC 6
NC 7
30 DQ3
30 DQ3
29 NC
28 NC
NC 6
NC 7
27 NC
25
OE
26
CAS
24 NC
26
CAS
WE
8
WE
8
RAS
9
RAS
9
24 NC
A0 10
A1 11
A2 12
A3 13
A4 14
A5 15
V
CC
16
32-Pin Plastic SOJ
23 A11
22 A10
21 A9
20 A8
19 A7
18 A6
17 V
SS
A0 10
A1 11
A2 12
A3 13
A4 14
A5 15
V
CC
16
23 A11
22 A10
21 A9
20 A8
19 A7
18 A6
17 V
SS
32-Pin Plastic TSOP
(K Type)
Pin Name
A0 - A11
RAS
CAS
DQ1 - DQ4
OE
WE
V
CC
V
SS
NC
Function
Address Input
Row Address Strobe
Column Address Strobe
Data Input/Data Output
Output Enable
Write Enable
Power Supply (3.3 V)
Ground (0 V)
No Connection
MD51V65400
Note :
The same power supply voltage must be provided to every V
CC
pin, and the same GND
voltage level must be provided to every V
SS
pin.
2/15
¡ Semiconductor
MD51V65400
BLOCK DIAGRAM
WE
RAS
CAS
12
OE
I/O
Controller
Output
Buffers
4
Timing
Generator
4
DQ1 - DQ4
Column
Address
Buffers
Internal
Address
Counter
12
Column Decoders
4
Input
Buffers
4
A0 - A11
Refresh
Control Clock
Sense Amplifiers
4
I/O
Selector
4
12
Row
Row
Address
12
Deco-
Buffers
ders
Word
Drivers
Memory
Cells
V
CC
On Chip
V
BB
Generator
On Chip
IV
CC
Generator
V
SS
3/15
¡ Semiconductor
MD51V65400
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
Parameter
Voltage on Any Pin Relative to V
SS
Short Circuit Output Current
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
V
T
I
OS
P
D
*
T
opr
T
stg
Rating
–0.5 to 4.6
50
1
0 to 70
–55 to 150
Unit
V
mA
W
°C
°C
*: Ta = 25°C
Recommended Operating Conditions
Parameter
Power Supply Voltage
Input High Voltage
Input Low Voltage
Symbol
V
CC
V
SS
V
IH
V
IL
Min.
3.0
0
2.0
–0.3
Typ.
3.3
0
—
—
Max.
3.6
0
V
CC
+ 0.3
0.8
(Ta = 0°C to 70°C)
Unit
V
V
V
V
Capacitance
(V
CC
= 3.3 V ±0.3 V, Ta = 25°C, f = 1 MHz)
Parameter
Input Capacitance (A0 - A11)
Input Capacitance (RAS,
CAS, WE, OE)
Output Capacitance (DQ1 - DQ4)
Symbol
C
IN1
C
IN2
C
I/O
Typ.
—
—
—
Max.
5
7
7
Unit
pF
pF
pF
4/15
