HM514100D Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics
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HM514100D Datasheet PDF : 26 Pages
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HM514100D Series
Capacitance (Ta = 25°C, VCC = 5 V ± 10%)
Parameter
Symbol Typ
Max
Unit
Notes
Input capacitance (Address, Data-in)
CI1
—
5
pF
1
Input capacitance (Clocks)
CI2
—
7
pF
1
Output capacitance (Data-out)
CO
—
7
pF
1, 2
Notes: 1. Capacitance measured with Boonton Meter or effective capacitance measuring method.
2. RAS, CAS = VIH to disable Dout.
AC Characteristics (Ta = 0 to +70°C, VCC = 5 V ± 10%, VSS = 0 V)*1, *12, *15
Test Conditions
• Input rise and fall time : 5 ns
• Input timing reference levels : 0.8 V, 2.4 V
• Output load : 2 TTL gate + CL (100 pF) (Including scope and jig)
Read, Write, Read-Modify-Write and Refresh Cycles (Common parameters)
Parameter
Random read or write cycle time
RAS precharge time
RAS pulse width
CAS pulse width
Row address setup time
Row address hold time
Column address setup time
Column address hold time
RAS to CAS delay time
RAS to column address delay time
RAS hold time
CAS hold time
CAS to RAS precharge time
Transition time (rise and fall)
Refresh period
Refresh period (L-version)
HM514100D
-6
Symbol Min Max
t RC
110 —
t RP
40 —
t RAS
60 10000
t CAS
15 10000
t ASR
0—
t RAH
10 —
t ASC
0—
t CAH
15 —
t RCD
20 45
t RAD
15 30
t RSH
15 —
t CSH
60 —
t CRP
10 —
tT
3 50
t REF
— 16
t REF
— 128
-7
Min Max
130 —
50 —
70 10000
20 10000
0—
10 —
0—
15 —
20 50
15 35
20 —
70 —
10 —
3 50
— 16
— 128
-8
Min Max
150 —
60 —
80 10000
20 10000
0—
10 —
0—
15 —
20 60
15 40
20 —
80 —
10 —
3 50
— 16
— 128
Unit Notes
ns
ns
ns 18
ns 19
ns
ns
ns
ns
ns 8
ns 9
ns
ns
ns
ns 7
ms
ms
7
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