HM658512A Ver la hoja de datos (PDF) - Hitachi -> Renesas Electronics
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HM658512A Datasheet PDF : 22 Pages
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HM658512A Series
AC Characteristics (Ta = 0 to +70°C, VCC = 5 V ± 10%, unless otherwise noted.)
Test Conditions
• Input pulse levels: 0.4 V, 2.4 V
• Input rise and fall time: 5 ns
• Timing measurement level: 0.8 V, 2.2 V
• Reference levels: VOH = 2.0 V, VOL = 0.8 V
• Output load: 1 TTL Gate and CL (100 pF) (Including scope and jig)
HM658512A
-7
Parameter
Symbol Min Max
Random read or write cycle time tRC
Chip enable access time
t CEA
Read-modify- write cycle time
t RWC
Output enable access time
t OEA
Chip disable to output in high-Z
t CHZ
Chip enable to output in low-Z
t CLZ
Output disable to output in high-Z tOHZ
Output enable to output in low-Z tOLZ
Chip enable pulse width
t CE
Chip enable precharge time
tP
Address setup time
t AS
Address hold time
t AH
Read command setup time
t RCS
Read command hold time
t RCH
Write command pulse width
t WP
Chip enable to end of write
t CW
Chip enable to output enable delay tOCD
time
115 —
— 70
160 —
— 25
0 25
20 —
— 25
0—
70 n 10 µ
35 —
0—
20 —
0—
0—
25 —
70 —
0—
Output enable hold time
t OHC
0—
-8
Min
130
—
180
—
0
20
—
0
80 n
40
0
20
0
0
25
80
0
0
Max
—
80
—
30
25
—
25
—
10 µ
—
—
—
—
—
—
—
—
—
-10
Min Max
160 —
— 100
220 —
— 40
0 25
20 —
— 25
0—
100 n 10 µ
50 —
0—
25 —
0—
0—
30 —
100 —
0—
0—
Unit Notes
ns
ns
ns
ns
ns 1, 2
ns 2
ns 1, 2
ns 2
s
ns
ns
ns
ns
ns
ns
ns
ns
ns
10
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