M5M44265CJ Ver la hoja de datos (PDF) - Mitsumi
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M5M44265CJ Datasheet PDF : 31 Pages
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MITSUBISHI LSIs
M5M44265CJ,TP-5,-6,-7,-5S,-6S,-7S
EDO (HYPER PAGE MODE) 4194304-BIT (262144-WORD BY 16-BIT) DYNAMIC RAM
TIMING REQUIREMENTS (For Read, Write, Read-Modify-Write, Refresh and Hyper-Page Mode Cycles)
(Ta=0~70˚C, VCC=5V±10%, VSS=0V, unless otherwise noted, see notes 14,15)
Limits
Symbol
Parameter
M5M44265C-5,-5S M5M44265C-6,-6S M5M44265C-7,-7S Unit
Min Max Min Max Min Max
tREF
Refresh cycle time
tREF
Refresh cycle time*
8.2
8.2
8.2
ms
128
128
128
ms
tRP
RAS high pulse width
30
40
50
ns
tRCD
Delay time, RAS low to CAS low
(Note 16) 18
32
20
38
20
42
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
8
10
13
ns
tRAD
Column address delay time from RAS low
(Note 17) 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 18) 0
10
0
13
0
13
ns
tRAH
Row address hold time after RAS low
8
10
10
ns
tCAH
Column address hold time after CAS low
8
10
10
ns
tDZC
Delay time, data to CAS low
(Note 19) 0
0
0
ns
tDZO
Delay time, data to OE low
(Note 19) 0
0
0
ns
tRDD
tCDD
tODD
Delay time, RAS high to data
Delay time, CAS high to data
Delay time, OE high to data
(Note 20) 13
15
20
ns
(Note 20) 13
15
20
ns
(Note 20) 13
15
20
ns
tT
Transition time
(Note 21) 1
50
1
50
1
50
ns
Note 14: The timing requirements are assumed tT=2ns.
15: VIH(min) and VIL(max) are reference levels for measuring timing of input signals.
16: 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.
17: tRAD(max) is specified as a reference point only. If tRAD ≥ tRAD(max) and tASC ≤ tASC(max), access time is controlled exclusively by tAA.
18: tASC(max) is specified as a reference point only. If tRCD ≥ tRCD(max) and tASC ≥ tASC(max), access time is controlled exclusively by tCAC.
19: Either tDZC or tDZO must be satisfied.
20: Either tRDD or tCDD or tODD must be satisfied.
21: 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
tCAL
Column address to CAS hold time
tORH
RAS hold time after OE low
tOCH
CAS hold time after OE low
Note 22: Either tRCH or tRRH must be satisfied for a read cycle.
Limits
M5M44265C-5,-5S M5M44265C-6,-6S M5M44265C-7,-7S Unit
Min Max Min Max Min Max
90
110
130
ns
50 10000 60 10000 70 10000
ns
8 10000 10 10000 13 10000
ns
40
48
55
ns
13
15
20
ns
0
0
0
ns
(Note 22) 0
0
0
ns
(Note 22) 0
0
0
ns
25
30
35
ns
13
18
23
ns
13
15
20
ns
13
15
20
ns
5
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