MITSUBISHI LSIs
M5M416100C J,TP -5, -6, -7, -5S, -6S, -7S
FAST PAGE MODE 16777216-BIT ( 16777216-WORD BY 1-BIT ) DYNAMIC RAM
(Ta=0 ~70°C, Vcc=5V±10%, Vss=0V, unless otherwise noted , see notes 5,12,13)
SWITCHING CHARACTERISTICS
Limits
M5M416100C-5,-5S M5M416100C-6,-6S M5M416100C-7,-7S
Symbol
Parameter
Unit
Min
Max
13
Min
Max
15
Min
Max
20
ns
ns
ns
ns
ns
ns
Access time from CAS
tCAC
tRAC
tAA
(Note 6,7)
(Note 6,8)
(Note 6,9)
(Note 6,10)
50
60
70
Access time from RAS
Column address access time
Access time from CAS precharge
25
30
35
30
35
40
tCPA
tCLZ
tOFF
5
0
5
0
5
0
Output low impedance time from CAS low (Note 6)
Output disable time after CAS high (Note 11)
13
15
15
Note 5: An initial pause of 500µs is required after power-up followed by a minimum of eight initialization RAS cycles. The initialization cycles
should be done either by RAS-Only refresh cycles or by CAS-before-RAS refresh cycles only.
Note the RAS may be cycled during the initial pause . And any 8 RAS or RAS/CAS cycles are required after prolonged periods
(greater than 64 ms) of RAS inactivity before proper device operation is achieved.
After the initialization cycles, RAS should be kept either higher than VIHmin or lower than VILmax except RAS transition time.
6: Measured with a load circuit equivalent to 2TTL loads and 100pF.
>
>
tASC(max).
7: Assumes that tRCD
tRCD(max) and tASC
=
=
<
<
8: Assumes that tRCD tRCD(max) and tRAD tRAD(max). If tRCD or tRAD is greater than the maximum recommended value shown in this table,
=
=
tRAC will increase by amount that tRCD exceeds the value shown.
>
<
9: Assumes that tRAD
tRAD(max) and tASC tASC(max).
=
=
<
>
10: Assumes that tCP tCP(max) and tASC tASC(max).
11: tOFF(max) defines the time at which the output achieves the high impedance state ( IOUT I±10 µAI) and is not reference to
=
=
<
=
VOH(min) or VOL(max).
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 12,13)
Limits
M5M416100C-5,-5S M5M416100C-6,-6S M5M416100C-7,-7S
Symbol
Parameter
Unit
Min
Max
64
Min
Max
64
Min
Max
64
Refresh cycle time
tREF
tRP
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
RAS high pulse width
30
18
10
0
40
20
10
0
50
20
10
0
tRCD
tCRP
tRPC
tCPN
tRAD
tASR
tASC
tRAH
tCAH
tT
(Note14)
Delay time, RAS low to CAS low
37
45
50
Delay time, CAS high to RAS low
Delay time, RAS high to CAS low
CAS high pulse width
10
13
0
10
15
0
10
15
0
Column address delay time from RAS low
(Note15)
(Note16)
25
7
30
10
35
10
Row address setup time before RAS low
Column address setup time before CAS low
0
0
0
Row address hold time after RAS low
Column address hold time after CAS low
Transition time
8
10
15
1
10
15
1
13
1
(Note17)
50
50
50
Note 12: The timing requirements are assumed tT =5ns.
13: VIH(min) and VIL(max) are reference levels for measuring timing of input signals.
14: 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. tRCD(min) is specified as tRCD(min) =tRAH(min) +2tH+tASC(min).
>
<
15: tRAD(max) is specified as a reference point only. If tRAD tRAD(max) and tASC tASC(max), access time is controlled exclusively by tAA.
=
=
>
>
16: tASC(max) is specified as a reference point only. If tRCD tRCD(max) and tASC tASC(max), access time is controlled exclusively by tCAC.
=
=
17: tT is measured between VIH(min) and VIL(max).
Challenging to LowCost &
HighPerformance
MITSUBISHI
ELECTRIC
4
DRAM
DRAM
Oct. 1997