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  NEC Electronic Components Datasheet  

MC-458CA721ESA Datasheet

8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM

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MC-458CA721ESA pdf
DATA SHEET
MOS INTEGRATED CIRCUIT
MC-458CA721ESA, 458CA721PSA
8M-WORD BY 72-BIT
SYNCHRONOUS DYNAMIC RAM MODULE (SO DIMM)
Description
The MC-458CA721ESA and MC-458CA721PSA are 8,388,608 words by 72 bits synchronous dynamic RAM module
(Small Outline DIMM) on which 5 pieces of 128M SDRAM: µPD45128163 are assembled.
These modules provide high density and large quantities of memory in a small space without utilizing the surface-
mounting technology on the printed circuit board.
Decoupling capacitors are mounted on power supply line for noise reduction.
Features
8,388,608 words by 72 bits organization (ECC type)
Clock frequency and access time from CLK
Part number
/CAS latency
Clock frequency (MAX.) Access time from CLK (MAX.)
MC-458CA721ESA-A80
CL = 3
125 MHz
6 ns
CL = 2
100 MHz
6 ns
MC-458CA721ESA-A10
CL = 3
100 MHz
6 ns
5 MC-458CA721PSA-A80
CL = 2
CL = 3
77 MHz
125 MHz
7 ns
6 ns
5 MC-458CA721PSA-A10
CL = 2
CL = 3
100 MHz
100 MHz
6 ns
6 ns
CL = 2
77 MHz
7 ns
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, BA1 (Bank Select)
Programmable burst-length (1, 2, 4, 8 and Full Page)
Programmable wrap sequence (Sequential / Interleave)
Programmable /CAS latency (2, 3)
Automatic precharge and controlled precharge
CBR (Auto) refresh and self refresh
Single 3.3 V ± 0.3 V power supply
LVTTL compatible
4,096 refresh cycles/64 ms
Burst termination by Burst Stop command and Precharge command
144-pin small outline dual in-line memory module (Pin pitch = 0.8 mm)
Unbuffered type
Serial PD
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. M14494EJ2V0DS00 (2nd edition)
Date Published February 2000 NS CP(K)
Printed in Japan
The mark shows major revised points.
©
1999



  NEC Electronic Components Datasheet  

MC-458CA721ESA Datasheet

8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM

No Preview Available !

MC-458CA721ESA pdf
MC-458CA721ESA, 458CA721PSA
Ordering Information
Part number
MC-458CA721ESA-A80
Clock frequency
MHz (MAX.)
125 MHz
MC-458CA721ESA-A10
5 MC-458CA721PSA-A80
100 MHz
125 MHz
Package
144-pin Small Outline DIMM
(Socket Type)
Edge connector: Gold plated
31.75 mm height
5 MC-458CA721PSA-A10
100 MHz
Mounted devices
5 piece of µPD45128163G5 (Rev. E)
(10.16mm (400) TSOP (II))
5 piece of µPD45128163G5 (Rev. P)
(10.16mm (400) TSOP (II))
2 Data Sheet M14494EJ2V0DS00



  NEC Electronic Components Datasheet  

MC-458CA721ESA Datasheet

8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM

No Preview Available !

MC-458CA721ESA pdf
MC-458CA721ESA, 458CA721PSA
Pin Configuration
144-pin Dual In-line Memory Module Socket Type (Edge connector: Gold plated)
2 Vss
Vss 1
4
DQ 32
DQ 0
3
6
DQ 33
DQ 1
5
8
DQ 34
DQ 2
7
10
DQ 35
DQ 3
9
12 Vcc
VCC 11
14
DQ 36
DQ 4
13
16
DQ 37
DQ 5
15
18
DQ 38
DQ 6
17
20
DQ 39
DQ 7
19
22 Vss
Vss 21
24 DQMB4 DQMB0 23
26 DQMB5 DQMB1 25
28 Vcc
VCC 27
30 A3
A0 29
32 A4
A1 31
34 A5
A2 33
36 Vss
Vss 35
38
DQ 40
DQ 8
37
40
DQ 41
DQ 9
39
42
DQ 42
DQ 10
41
44
DQ 43
DQ 11
43
46 Vcc
VCC 45
48
DQ 44
DQ 12
47
50
DQ 45
DQ 13
49
52
DQ 46
DQ 14
51
54
DQ 47
DQ 15
53
56 Vss
Vss 55
58 CB 4
CB 0
57
60 CB 5
CB 1
59
62
CKE0
CLK0
61
64 Vcc
Vcc 63
66
/CAS
/RAS
65
68 NC
/WE 67
70 NC
/CS0
69
72 NC
NC 71
74 CLK1
NC 73
76 Vss
Vss 75
78 CB 6
CB 2
77
80 CB 7
CB 3
79
82 Vcc
VCC 81
84
DQ 48
DQ 16
83
86
DQ 49
DQ 17
85
88
DQ 50
DQ 18
87
90
DQ 51
DQ 19
89
92 Vss
Vss 91
94
DQ 52
DQ 20
93
96
DQ 53
DQ 21
95
98
DQ 54
DQ 22
97
100
DQ 55
DQ 23
99
102 Vcc
Vcc 101
104 A7
A6 103
106
BA0 (A13)
A8
105
108 Vss
Vss 107
110
BA1 (A12)
A9
109
112 A11
A10 111
114 Vcc
Vcc 113
116
DQMB6 DQMB2
115
118
DQMB7 DQMB3
117
120 Vss
Vss 119
122
DQ 56
DQ 24
121
124
DQ 57
DQ 25
123
126
DQ 58
DQ 26
125
128
DQ 59
DQ 27
127
130 Vcc
VCC 129
132
DQ 60
DQ 28
131
134
DQ 61
DQ 29
133
136
DQ 62
DQ 30
135
138
DQ 63
DQ 31
137
140 Vss
Vss 139
142 SCL
SDA
141
144 Vcc
VCC 143
/xxx indicates active low signal.
A0 - A11
: Address Inputs
[Row: A0 - A11, Column: A0 - A8]
BA0(A13), BA1(A12) : SDRAM Bank Select
DQ0 - DQ63
: Data Inputs/Outputs
CB0 - CB7
: Data Inputs/Outputs
CLK0, CLK1
: Clock Input
CKE0
: Clock Enable Input
/CS0
: Chip Select Input
/RAS
: Row Address Strobe
/CAS
: Column Address Strobe
/WE : Write Enable
DQMB0 - DQMB7 : DQ Mask Enable
SDA
: Serial Data I/O for PD
SCL : Clock Input for PD
VCC : Power Supply
VSS : Ground
NC : No Connection
Data Sheet M14494EJ2V0DS00
3




Part Number MC-458CA721ESA
Description 8M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULE SO DIMM
Maker NEC
Total Page 16 Pages
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