hm62256b ETC-unknow, hm62256b Datasheet - Page 7

• Manufacturer Part Number: hm62256b
• Description: 256k Sram 32-kword 8-bit
• Manufacturer: ETC-unknow

AC Characteristics (Ta = 0 to +70 C, V
Test Conditions
Read Cycle
Parameter
Read cycle time
Address access time
Chip select to access time
Output enable to output valid
Chip select to output in low-Z
Output enable to output in low-Z
Chip deselect 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
(50 pF) (HM62256B-5)
(100 pF) (HM62256B-7/8)
Symbol
t
t
t
t
t
t
t
t
t
RC
AA
ACS
OE
CLZ
OLZ
CHZ
OHZ
OH
CC
HM62256B
-5
Min
55
—
—
—
5
5
0
0
5
= 5.0 V 10%)
Max
—
55
55
35
—
—
20
20
—
-7
Min
70
—
—
—
10
5
0
0
5
Max
—
70
70
40
—
—
25
25
—
-8
Min
85
—
—
—
10
5
0
0
5
HM62256B Series
Max
—
85
85
45
—
—
30
30
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
2
2
1, 2
1, 2
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