UPD444012AGY-B10X-MJH NEC [NEC], UPD444012AGY-B10X-MJH Datasheet - Page 9

• Manufacturer Part Number: UPD444012AGY-B10X-MJH
• Description: 4M-BIT CMOS STATIC RAM 256K-WORD BY 16-BIT EXTENDED TEMPERATURE OPERATION
• Manufacturer: NEC [NEC]

Read Cycle (1/2) (B version)
Notes 1. The output load is 1TTL + 50 pF.
Read Cycle (2/2) (C version)
Notes 1. The output load is 1TTL + 30 pF.
Read cycle time
Address access time
/CE1 access time
CE2 access time
/OE to output valid
/LB, /UB to output valid
Output hold from address change
/CE1 to output in low impedance
CE2 to output in low impedance
/OE to output in low impedance
/LB, /UB to output in low impedance
/CE1 to output in high impedance
CE2 to output in high impedance
/OE to output in high impedance
/LB, /UB to output in high impedance
Read cycle time
Address access time
/CE1 access time
CE2 access time
/OE to output valid
/LB, /UB to output valid
Output hold from address change
/CE1 to output in low impedance
CE2 to output in low impedance
/OE to output in low impedance
/LB, /UB to output in low impedance
/CE1 to output in high impedance
CE2 to output in high impedance
/OE to output in high impedance
/LB, /UB to output in high impedance
2. The output load is 1TTL + 5 pF.
2. The output load is 1TTL + 5 pF.
Parameter
Parameter
Symbol
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
CO1
CO2
t
OHZ
BHZ
t
CO1
CO2
t
OHZ
BHZ
LZ1
LZ2
OLZ
BLZ
HZ1
HZ2
LZ1
LZ2
OLZ
BLZ
HZ1
HZ2
OH
OH
RC
AA
OE
BA
RC
AA
OE
BA
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
V
PD444012A
50
10
10
10
10
MIN.
CC
0
Data Sheet M14464EJ5V0DS
PD444012A
70
10
10
10
10
-B55X
0
-C70X
3.0 V
50
50
50
30
50
20
20
20
20
MAX.
70
70
70
35
70
25
25
25
25
PD444012A
55
10
10
10
10
0
-B55X
MIN.
85
10
10
10
10
PD444012A
0
55
55
55
30
55
20
20
20
20
-C85X
MAX.
V
85
85
85
40
85
30
30
30
30
PD444012A
70
10
10
10
10
0
CC
-B70X
2.2 V
V
70
70
70
35
70
25
25
25
25
MIN.
100
CC
10
10
10
10
PD444012A
0
-C10X
2.7 V
PD444012A
85
10
10
10
10
0
MAX.
-B85X
100
100
100
100
50
35
35
35
35
85
85
85
40
85
30
30
30
30
MIN.
120
10
10
10
10
PD444012A
0
PD444012A-X
100
PD444012A
-C12X
10
10
10
10
0
-B10X
MAX.
120
120
120
120
60
40
40
40
40
100
100
100
100
50
35
35
35
35
Unit
Unit Condition
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Condition
Note 1
Note 2
Note 1
Note 2
9