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MC-458CB647 Datasheet(PDF) 8 Page - NEC

Part # MC-458CB647
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-458CB647 Datasheet(HTML) 8 Page - NEC

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Data Sheet M14279EJ3V0DS00
8
MC-458CB647
Synchronous Characteristics
Parameter
Symbol
-A 75
Unit
Note
MIN.
MAX.
Clock cycle time
/CAS latency = 3
tCK3
7.5
(133 MHz)
ns
/CAS latency = 2
tCK2
10
(100 MHz)
ns
Access time from CLK
/CAS latency = 3
tAC3
5.4
ns
1
/CAS latency = 2
tAC2
6.0
ns
1
CLK high level width
tCH
2.5
ns
CLK low level width
tCL
2.5
ns
Data-out hold time
tOH
3.0
ns
1
Data-out low-impedance time
tLZ
0ns
Data-out high-impedance time
/CAS latency = 3
tHZ3
3.0
5.4
ns
/CAS latency = 2
tHZ2
3.0
6.0
ns
Data-in setup time
tDS
1.5
ns
Data-in hold time
tDH
0.8
ns
Address setup time
tAS
1.5
ns
Address hold time
tAH
0.8
ns
CKE setup time
tCKS
1.5
ns
CKE hold time
tCKH
0.8
ns
CKE setup time (Power down exit)
tCKSP
1.5
ns
Command (/CS0, /CS2, /RAS, /CAS, /WE,
tCMS
1.5
ns
DQMB0 - DQMB7) setup time
Command (/CS0, /CS2, /RAS, /CAS, /WE,
tCMH
0.8
ns
DQMB0 - DQMB7) hold time
Note 1. Output load
Output
Z = 50
50 pF
Remark These specifications are applied to the monolithic device.
5


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