DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD45128441, 45128841, 45128163
128M-bit Synchronous DRAM
4-bank, LVTTL
Description
The
µ
PD45128441, 45128841, 45128163 are high-speed 134,217,728-bit synchronous dynamic random-access
memories, organized as 8,388,608
×
4
×
4, 4,194,304
×
8
×
4, 2,097,152
×
16
×
4 (word
×
bit
×
bank), respectively.
The synchronous DRAMs achieved high-speed data transfer using the pipeline architecture.
All inputs and outputs are synchronized with the positive edge of the clock.
The synchronous DRAMs are compatible with Low Voltage TTL (LVTTL).
These products are packaged in 54-pin TSOP (II).
Features
•
Fully Synchronous Dynamic RAM, with all signals referenced to a positive clock edge
•
Pulsed interface
•
Possible to assert random column address in every cycle
•
Quad internal banks controlled by BA0(A13) and BA1(A12)
•
Byte control (×16) by LDQM and UDQM
•
Programmable Wrap sequence (Sequential / Interleave)
•
Programmable burst length (1, 2, 4, 8 and full page)
•
Programmable /CAS latency (2 and 3)
•
Automatic precharge and controlled precharge
•
CBR (Auto) refresh and self refresh
• ×4, ×8, ×16
organization
•
Single 3.3 V
±
0.3 V power supply
•
LVTTL compatible inputs and outputs
•
4,096 refresh cycles / 64 ms
•
Burst termination by Burst stop command and Precharge command
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. M12650EJAV0DS00 (10th edition)
Date Published January 2000 NS CP (K)
Printed in Japan
The mark
•
shows major revised points.
©
1997
µ
PD45128441, 45128841, 45128163
Pin Configurations
/xxx indicates active low signal.
[
µ
PD45128441]
54-pin Plastic TSOP (II) (10.16mm (400))
8M words
×
4 bits
×
4 banks
V
CC
NC
V
CC
Q
NC
DQ0
V
SS
Q
NC
NC
V
CC
Q
NC
DQ1
V
SS
Q
NC
V
CC
NC
/WE
/CAS
/RAS
/CS
BA0(A13)
BA1(A12)
A10
A0
A1
A2
A3
V
CC
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
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
Vss
NC
VssQ
NC
DQ3
VccQ
NC
NC
VssQ
NC
DQ2
VccQ
NC
Vss
NC
DQM
CLK
CKE
NC
A11
A9
A8
A7
A6
A5
A4
Vss
A0 to A11
Note
: Address inputs
: Data inputs / outputs
: Clock input
: Clock enable
: Chip select
: Row address strobe
: Column address strobe
: Write enable
: DQ mask enable
: Supply voltage
: Ground
: Supply voltage for DQ
: Ground for DQ
: No connection
Note
A0 to A11
: Row address inputs
A0 to A9, A11 : Column address inputs
BA0(A13), BA1(A12): Bank select
DQ0 to DQ3
CLK
CKE
/CS
/RAS
/CAS
/WE
DQM
V
CC
V
SS
V
CC
Q
V
SS
Q
NC
4
Data Sheet M12650EJAV0DS00
µ
PD45128441, 45128841, 45128163
[
µ
PD45128841]
54-pin Plastic TSOP (II) (10.16mm (400))
4M words
×
8 bits
×
4 banks
V
CC
DQ0
V
CC
Q
NC
DQ1
V
SS
Q
NC
DQ2
V
CC
Q
NC
DQ3
V
SS
Q
NC
V
CC
NC
/WE
/CAS
/RAS
/CS
BA0(A13)
BA1(A12)
A10
A0
A1
A2
A3
V
CC
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
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
Vss
DQ7
VssQ
NC
DQ6
VccQ
NC
DQ5
VssQ
NC
DQ4
VccQ
NC
Vss
NC
DQM
CLK
CKE
NC
A11
A9
A8
A7
A6
A5
A4
Vss
A0 to A11
Note
: Address inputs
: Data inputs / outputs
: Clock input
: Clock enable
: Chip select
: Row address strobe
: Column address strobe
: Write enable
: DQ mask enable
: Supply voltage
: Ground
: Supply voltage for DQ
: Ground for DQ
: No connection
Note
A0 to A11 : Row address inputs
A0 to A9 : Column address inputs
BA0(A13), BA1(A12): Bank select
DQ0 to DQ7
CLK
CKE
/CS
/RAS
/CAS
/WE
DQM
V
CC
V
SS
V
CC
Q
V
SS
Q
NC
Data Sheet M12650EJAV0DS00
5
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