IC Memory
Static RAM
s
Low Power Static RAM
Organiza-
tion
(words
∞
bits)
32K
∞
8
Maximum supply current
Access
Supply
time
Data
voltage
Active Standby
MAX.
retention
(V)
(mA)
(mA)
(ns)
(
µ
A)
70
85
45
45
0.1
0.05
50
20
Capacity
(bits)
Part number
Package
Remarks
256K
µ
PD43256B
with CS, OE
5±10 % • 28-pin DIP (600 mil)
• 28-pin SOP (450 mil)
• 32-pin TSOP
I
(600 mil)
• 28-pin TSOP
I
(8
∞
13.4 mm)
L version
LL version
µ
PD43257B
with CE1, CE2
1M
128K
∞
8
70
85
70
85
100
45
45
70
0.1
0.05
0.1
0.05
50
20
50
20
• 28-pin DIP (600 mil)
• 28-pin SOP (450 mil)
• 32-pin DIP (600 mil)
• 32-pin SOP (525 mil)
• 32-pin TSOP
I
(8
∞
20 mm)
L version
LL version
L version
LL version
µ
PD431000A
with CE1, CE2,
OE
s
Low Power Static RAM Low Voltage (2.7 to 5.5 V) Operation
Organiza-
Capacity tion
(words
∞
(bits)
bits)
256K
32K
∞
8
Maximum supply current
Access
time
Data
Active Standby
MAX.
retention
(mA)
(
µ
A)
(ns)
(
µ
A)
120
20
45
with CS, OE
1M
128K
∞
8
µ
PD431000A-B15
85
150
20
70
with CE1, CE2,
OE
100
25
50
20
25
50
20
Supply
voltage
(V)
3±10 %
3.3 < V
CC
< 4.5
5±10 %
3±10 %
3.3 < V
CC
< 4.5
5±10 %
Part number
Package
µ
PD43256B-B12
• 28-pin SOP (450 mil)
• 32-pin TSOP
I
(600 mil)
• 28-pin TSOP
I
(8
∞
13.4 mm)
• 32-pin SOP (525 mil)
• 32-pin TSOP
I
(8
∞
20 mm)
s
Low Power Static RAM Low Voltage (3.0 to 5.5 V) Operation
Organiza-
Capacity tion
(bits)
(words
∞
bits)
256K
32K
∞
8
Maximum supply current
Access
time
Data
Active Standby
MAX.
retention
(mA)
(mA)
(ns)
(
µ
A)
100
85
45
50
20
Supply
voltage
(V)
3.3 ± 0.3 V
5±10 %
3.3 ± 0.3 V
5±10 %
Part number
Package
µ
PD43256B-A10
µ
PD43256B-A12
• 28-pin SOP (450 mil)
• 32-pin TSOP
I
(600 mil)
• 28-pin TSOP
I
(8
∞
13.4 mm)
120
85
75