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MC-458CB646 Datasheet(PDF) 3 Page - NEC

Part # MC-458CB646
Description  8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

MC-458CB646 Datasheet(HTML) 3 Page - NEC

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Data Sheet M13049EJ7V0DS00
3
MC-458CB646
Pin Configuration
168-pin Dual In-line Memory Module Socket Type (Edge connector: Gold plated)
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
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149
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155
156
157
158
159
160
161
162
163
164
165
166
167
168
VSS
DQ32
DQ33
DQ34
DQ35
Vcc
DQ36
DQ37
DQ38
DQ39
DQ40
VSS
DQ41
DQ42
DQ43
DQ44
DQ45
Vcc
NC
VSS
NC
NC
Vcc
/CAS
DQMB4
DQMB5
NC
/RAS
VSS
A1
A3
A5
A7
A9
BA0 (A13)
A11
Vcc
CLK1
NC
VSS
CKE0
NC
DQMB6
DQMB7
NC
Vcc
NC
NC
NC
NC
VSS
DQ48
DQ49
DQ50
DQ51
Vcc
DQ52
NC
NC
NC
VSS
DQ53
DQ54
DQ55
VSS
DQ56
DQ57
DQ58
DQ59
Vcc
DQ60
DQ61
DQ62
DQ63
VSS
CLK3
NC
SA0
SA1
SA2
Vcc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
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23
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25
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27
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31
32
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44
45
46
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51
52
53
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61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
VSS
DQ0
DQ1
DQ2
DQ3
Vcc
DQ4
DQ5
DQ6
DQ7
DQ8
VSS
DQ9
DQ10
DQ11
DQ12
DQ13
Vcc
DQ14
DQ15
NC
NC
VSS
NC
NC
Vcc
/WE
DQMB0
DQMB1
/CS0
NC
VSS
A0
A2
A4
A6
A8
A10
BA1 (A12)
Vcc
Vcc
CLK0
VSS
NC
/CS2
DQMB2
DQMB3
NC
Vcc
NC
NC
NC
NC
VSS
DQ16
DQ17
DQ18
DQ19
Vcc
DQ20
NC
NC
NC
VSS
DQ21
DQ22
DQ23
VSS
DQ24
DQ25
DQ26
DQ27
Vcc
DQ28
DQ29
DQ30
DQ31
VSS
CLK2
NC
WP
SDA
SCL
Vcc
DQ46
DQ47
NC
A0 - A11
: Address Inputs
[Row: A0 - A11, Column: A0 - A8]
BA0 (A13), BA1 (A12) : SDRAM Bank Select
DQ0 - DQ63
: Data Inputs/Outputs
CLK0 - CLK3
: Clock Input
CKE0
: Clock Enable Input
/CS0, /CS2
: Chip Select Input
/RAS
: Row Address Strobe
/CAS
: Column Address Strobe
/WE
: Write Enable
DQMB0 - DQMB7
: DQ Mask Enable
SA0 - SA2
: Address Input for EEPROM
SDA
: Serial Data I/O for PD
SCL
: Clock Input for PD
VCC
: Power Supply
VSS
: Ground
WP
: Write Protect
NC
: No Connection
/
××× indicates active low signal.


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