M5M44800CTP-5 Ver la hoja de datos (PDF) - MITSUBISHI ELECTRIC
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M5M44800CTP-5 Datasheet PDF : 21 Pages
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MITSUBISHI LSIs
M5M44800CJ,TP-5,-6,-7,-5S,-6S,-7S
FAST PAGE MODE 4194304-BIT (524288-WORD BY 8-BIT) DYNAMIC RAM
TIMING REQUIREMENTS (For Read, Write, Read-Modify-Write, Refresh, and Fast-Page Mode Cycles)
(Ta=0~70˚C, VCC = 5V±10%, VSS=0V, unless otherwise noted, see notes 6,13,14)
Symbol
Parameter
Limits
M5M44800C-5,-5S M5M44800C-6,-6S M5M44800C-7,-7S Unit
Min Max Min Max Min Max
tREF
Refresh cycle time
16.4
16.4
16.4
ms
tREF
Refresh cycle time *
128
128
128
ms
tRP
RAS high pulse width
30
40
50
ns
tRCD
Delay time, RAS low to CAS low
(Note 15) 18
37 20
45 20
50
ns
tCRP
Delay time, CAS high to RAS low
5
5
5
ns
tRPC
Delay time, RAS high to CAS low
0
0
0
ns
tCPN
CAS high pulse width
10
10
10
ns
tRAD
Column address delay time from RAS low
(Note 16) 13
25 15
30 15
35
ns
tASR
Row address setup time before RAS low
0
0
0
ns
tASC
Column address setup time before CAS low
(Note 17) 0
7
0
10
0
10
ns
tRAH
Row address hold time after RAS low
8
10
10
ns
tCAH
Column address hold time after CAS low
13
15
15
ns
tDZC
tDZO
tCDD
tODD
tT
Delay time, data to CAS low
Delay time, data to OE low
Delay time, CAS high to data
Delay time, OE high to data
Transition time
(Note 18) 0
0
0
ns
(Note 18) 0
0
0
ns
(Note 19) 13
15
20
ns
(Note 19) 13
15
20
ns
(Note 20) 1
50
1
50
1
50
ns
Note 13: The timing requirements are assumed tT=5ns.
Note 14: VIH(min) and VIL(max) are reference levels for measuring timing of input signals.
Note 15: tRCD(max) is specified as a reference point only. If tRCD is less than tRCD(max), access time is tRAC. If tRCD is greater than tRCD(max), access time is
controlled exclusively by tCAC or tAA.
Note 16: tRAD(max) is specified as a reference point only. If tRAD ≥ tRAD(max) and tASC ≤ tASC(max), access time is controlled exclusively by tAA.
Note 17: tASC(max) is specified as a reference point only. If tRCD ≥ tRCD(max) and tASC ≥ tASC(max), access time is controlled exclusively by tCAC.
Note 18: Either tDZC or tDZO must be satisfied.
Note 19: Either tCDD or tODD must be satisfied.
Note 20: tT is measured between VIH(min) and VIL(max).
Read and Refresh Cycles
Symbol
Parameter
tRC
Read cycle time
tRAS
RAS low pulse width
tCAS
CAS low pulse width
tCSH
CAS hold time after RAS low
tRSH
RAS hold time after CAS low
tRCS
Read Setup time before CAS low
tRCH
Read hold time after CAS high
tRRH
Read hold time after RAS high
tRAL
Column address to RAS hold time
tOCH
CAS hold time after OE low
tORH
RAS hold time after OE low
Note 21: Either tRCH or tRRH must be satisfied for a read cycle.
Limits
M5M44800C-5,-5S M5M44800C-6,-6S M5M44800C-7,-7S Unit
Min Max Min Max Min Max
90
110
130
ns
50 10000 60 10000 70 10000
ns
13 10000 15 10000 20 10000
ns
50
60
70
ns
13
15
20
ns
0
0
0
ns
(Note 21) 0
0
0
ns
(Note 21) 0
0
0
ns
25
30
35
ns
13
15
20
ns
13
15
20
ns
5
M5M44800CJ,TP-5,-5S:Under development
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