HM628512 HITACHI [Hitachi Semiconductor], HM628512 Datasheet - Page 7

• Manufacturer Part Number: HM628512
• Description: 4 M SRAM (512-kword x 8-bit)
• Manufacturer: HITACHI [Hitachi Semiconductor]

AC Characteristics (Ta = –20 to +70 C, V
Test Conditions
Read Cycle
Parameter
Read cycle time
Address access time
Chip select access time
Output enable to output valid
Chip selection to output in low-Z
Output enable to output in low-Z
Chip deselection to output in high-Z
Output disable to output in high-Z
Output hold from address change
Input pulse levels: 0.8 V to 2.4 V
Input rise and fall time: 5 ns
Input and output timing reference levels: 1.5 V
Output load: 1 TTL Gate + C
1 TTL Gate + C
(Including scope & jig)
L
L
(100 pF) (HM628512B-7)
(50 pF) (HM628512B-5)
Symbol
t
t
t
t
t
t
t
t
t
RC
AA
CO
OE
LZ
OLZ
HZ
OHZ
OH
HM628512B
-5
Min
55
—
—
—
10
5
0
0
10
CC
= 5 V 10%, unless otherwise noted.)
Max
—
55
55
25
—
—
20
20
—
-7
Min
70
—
—
—
10
5
0
0
10
Max
—
70
70
35
—
—
25
25
—
HM628512B Series
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
2
2
1, 2
1, 2
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