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UPD442000AGU-BB55X-9JH Datasheet(PDF) 10 Page - NEC

Part # UPD442000AGU-BB55X-9JH
Description  2M-BIT CMOS STATIC RAM 256K-WORD BY 8-BIT EXTENDED TEMPERATURE OPERATION
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD442000AGU-BB55X-9JH Datasheet(HTML) 10 Page - NEC

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Data Sheet M14669EJ7V0DS
10
µµµµPD442000A-X
Read Cycle (1/3)
Parameter
Symbol
VCC
≥ 2.7 V
Unit
Condition
-BB55X
-BB70X
-BB85X
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
Read cycle time
tRC
55
70
85
ns
Address access time
tAA
55
70
85
ns
Note 1
/CE1 access time
tCO1
55
70
85
ns
CE2 access time
tCO2
55
70
85
ns
/OE to output valid
tOE
30
35
40
ns
Output hold from address change
tOH
10
10
10
ns
/CE1 to output in Low-Z
tLZ1
10
10
10
ns
Note 2
CE2 to output in Low-Z
tLZ2
10
10
10
ns
/OE to output in Low-Z
tOLZ
555
ns
/CE1 to output in High-Z
tHZ1
20
25
30
ns
CE2 to output in High-Z
tHZ2
20
25
30
ns
/OE to output in High-Z
tOHZ
20
25
30
ns
Notes 1. The output load is 1TTL + 50 pF.
2. The output load is 1TTL + 5 pF.
Read Cycle (2/3)
Parameter
Symbol
VCC
≥ 2.2 V
Unit
Condition
-BC70X
-BC85X
-BC10X
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
Read cycle time
tRC
70
85
100
ns
Address access time
tAA
70
85
100
ns
Note 1
/CE1 access time
tCO1
70
85
100
ns
CE2 access time
tCO2
70
85
100
ns
/OE to output valid
tOE
35
40
50
ns
Output hold from address change
tOH
10
10
10
ns
/CE1 to output in Low-Z
tLZ1
10
10
10
ns
Note 2
CE2 to output in Low-Z
tLZ2
10
10
10
ns
/OE to output in Low-Z
tOLZ
555
ns
/CE1 to output in High-Z
tHZ1
25
30
35
ns
CE2 to output in High-Z
tHZ2
25
30
35
ns
/OE to output in High-Z
tOHZ
25
30
35
ns
Notes 1. The output load is 1TTL + 30 pF.
2. The output load is 1TTL + 5 pF.


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