Semiconductor
MSM54V16282
1/39
Semiconductor
MSM54V16282
262,144-Word
16-Bit Multiport DRAM
DESCRIPTION
The MSM54V16282 is a 4-Mbit CMOS multiport DRAM composed of a 262,144-word by 16-bit
dynamic RAM, and a 512-word by 16-bit SAM. Its RAM and SAM operate independently and
asynchronously.
It supports three types of operations: random access to RAM port, high speed serial access to
SAM port, and bidirectional transfer of data between any selected row in the RAM port and the
SAM port. In addition to the conventional multiport DRAM operating modes, the MSM54V16282
features block write and flash write functions on the RAM port, and a split data transfer
capability on the SAM port. The SAM port requires no refresh operation because it uses static
CMOS flip-flops.
FEATURES
Single power supply: 3.3 V
0.3 V
Full TTL compatibility
Multiport organization
RAM : 256K word 16 bits
SAM : 512 word 16 bits
Fast page mode
Write per bit
Byte write
Masked flash write
Masked block write (8 columns)
Package options:
64-pin 525 mil plastic SSOP
(SSOP64-P-525-0.80-K)
(Product : MSM54V16282-xxGS-K)
70/64-pin 400 mil plastic TSOP (Type II)(TSOPII70/64-P-400-0.65-K)(Product : MSM54V16282-xxTS-K)
xx indicates speed rank.
PRODUCT FAMILY
RAS only refresh
CAS before RAS refresh
CAS before RAS self-refresh
Hidden refresh
Serial read/write
512 tap location
Bidirectional data transfer
Split transfer
Masked write transfer
Refresh: 512 cycles/8 ms
Access Time
Cycle Time
Power Dissipation
RAM
RAM
Operating
Standby
SAM
SAM
60 ns
120 ns
160 mA
8 mA
18 ns
22 ns
70 ns
140 ns
150 mA
8 mA
20 ns
22 ns
Family
MSM54V16282-60
MSM54V16282-70
E2L0026-17-Y1
This version: Jan. 1998
Previous version: Dec. 1996
Semiconductor
MSM54V16282
2/39
PIN CONFIGURATION (TOP VIEW)
Pin Name
Function
A0 - A8
Address Input
RAS
Row Address Strobe
CAS
Column Address Strobe
TRG
Transfer/Output Enable
WEL
Write Enable Lower
Pin Name
Function
SC
Serial Clock
SE
SAM Port Enable
DSF
Special Function Input
V
CC
Power Supply (3.3 V)
NC
No Connection
DQ0 - DQ15
RAM Inputs/Outputs
SDQ0 - SDQ15
SAM Inputs/Outputs
QSF
Special Function Output
V
SS
Ground (0 V)
WEU
Write Enable Upper
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.
DQ15
SDQ15
DQ14
SDQ14
V
CC
DQ13
SDQ13
DQ12
SDQ12
V
SS
DQ11
SDQ11
DQ10
SDQ10
V
CC
DQ9
SDQ9
SDQ7
DQ7
SDQ6
DQ6
V
SS
SDQ5
DQ5
SDQ4
DQ4
V
SS
SDQ0
DQ0
SDQ1
DQ1
V
CC
SDQ2
DQ2
V
CC
SC
V
SS
V
CC
SDQ3
DQ3
V
SS
SE
TRG
A5
A4
V
CC
DQ8
V
SS
DSF
NC
CAS
QSF
A0
A1
A2
A3
V
SS
SDQ8
WEL
WEU
A6
A7
A8
RAS
64-Pin Plastic SSOP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
DQ15
SDQ15
DQ14
SDQ14
V
CC
DQ13
SDQ13
DQ12
SDQ12
V
SS
DQ11
SDQ11
DQ10
SDQ10
V
CC
DQ9
SDQ9
SDQ7
DQ7
SDQ6
DQ6
V
SS
SDQ5
DQ5
SDQ4
DQ4
V
SS
SDQ0
DQ0
SDQ1
DQ1
V
CC
SDQ2
DQ2
V
CC
SC
V
SS
V
CC
SDQ3
DQ3
V
SS
SE
TRG
A5
A4
V
CC
DQ8
V
SS
DSF
NC
CAS
QSF
A0
A1
A2
A3
V
SS
SDQ8
WEL
WEU
A6
A7
A8
RAS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
70/64-Pin Plastic TSOP (
II)
(K Type)
Semiconductor
MSM54V16282
4/39
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Input Output Voltage
V
T
0.5 to 4.6
V
Output Current
I
OS
50
mA
Power Dissipation
P
D
1
W
Operating Temperature
T
opr
0 to 70
C
Storage Temperature
T
stg
55 to 150
C
Condition
Ta = 25C
Ta = 25C
Ta = 25C
--
--
(Note: 1)
Recommended Operating Conditions
Parameter
Symbol
Unit
Power Supply Voltage
V
CC
V
Input High Voltage
V
IH
V
Input Low Voltage
V
IL
V
Min.
3.0
2.0
0.3
Typ.
3.3
--
--
Max.
3.6
V
CC
+ 0.3
0.8
(Ta = 0C to 70C) (Note: 2)
Capacitance
Parameter
Symbol
Min.
Unit
Input Capacitance
C
i
--
pF
Input/Output Capacitance
C
io
--
pF
Max.
6
7
Output Capacitance
C
o
(QSF)
--
pF
7
(V
CC
= 3.3 V 0.3 V, f = 1 MHz, Ta = 25C)
Note:
This parameter is periodically sampled and is not 100% tested.
DC Characteristics 1
Parameter
Symbol
Condition
Output "H" Level Voltage
V
OH
I
OH
= 2 mA
Output "L" Level Voltage
V
OL
I
OL
= 2 mA
Input Leakage Current
I
LI
0 V
IN
V
CC
All other pins not
under test = 0 V
Min.
2.4
--
10
Max.
--
0.4
10
Unit
V
mA
Output Leakage Current
I
LO
0 V
OUT
V
CC
Output Disable
10
10
Semiconductor
MSM54V16282
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DC Characteristics 2
-60
-70
Unit Note
Symbol
Item (RAM)
SAM
Max.
Max.
Operating Current
Standby
(RAS, CAS Cycling, t
RC
= t
RC
min.)
Active
Standby Current
(RAS, CAS = V
IH
)
RAS Only Refresh Current
(RAS Cycling, CAS = V
IH
, t
RC
= t
RC
min.)
Page Mode Current
(RAS = V
IL
, CAS Cycling, t
PC
= t
PC
min.)
CAS before RAS Refresh Current
(RAS Cycling, CAS before RAS, t
RC
= t
RC
min.)
Data Transfer Current
(RAS, CAS Cycling, t
RC
= t
RC
min.)
Flash Write Current
(RAS, CAS Cycling, t
RC
= t
RC
min.)
Block Write Current
(RAS, CAS Cycling, t
RC
= t
RC
min.)
Standby
Active
Standby
Active
Standby
Active
Standby
Active
Standby
Active
Standby
Active
Standby
Active
(V
CC
= 3.3 V 0.3 V, Ta = 0C to 70C)
120
110
mA
3, 4
I
CC1
160
150
17
8
8
55
55
3, 4
120
110
3, 4
160
150
17
120
110
3, 4
160
150
18
100
90
3, 4
140
130
3, 4
110
100
3, 4
150
140
17
110
100
3, 4
150
140
3, 4
110
100
3, 4
150
140
3, 4
I
CC1
A
I
CC2
I
CC2
A
I
CC3
I
CC3
A
I
CC4
I
CC4
A
I
CC5
I
CC5
A
I
CC6
I
CC6
A
I
CC7
I
CC7
A
I
CC8
I
CC8
A
CAS before RAS Self-Refresh Current
(RAS, CAS 0.2 V)
Standby
1
1
3, 4
I
CC9
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