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Products > Memory > Phased Out Products >

ZEROSB™ SRAM 8M bit


(Temperature Range: TA=0 to 70°C),
(Extended Temperature: TA=-40 to +85°C)

512K words x 16 bits organization


Part Number Speed Grade Clock
Frequency
(MHz) 		Clock
Access
Time
MAX.
(ns) 		Supply Voltage
(V) 		Package Remark Data
Sheet
0 to
70°C 		-40 to
+85°C 		Chip I/O
µPD4481161 A65 A65Y 133 6.5 3.3±0.165 3.3 *1 GF:
100-pin LQFP
(14x20mm) 		Flow
Through
Operation 		(218KB)
A75 A75Y 117 7.5 3.3 or 2.5
A85 A85Y 100 8.5
C75 C75Y 117 7.5 2.5±0.125 2.5
C85 C85Y 100 8.5
µPD4481162 A44 A44Y 225 2.8 3.3±0.165 3.3 *2 GF:
100-pin LQFP
(14x20mm) 		Pipeline
Operation 		(221KB)
A50 A50Y 200 3.2
A60 A60Y 167 3.5 3.3 or 2.5
A75 A75Y 133 4.2
C60 C60Y 167 3.5 2.5±0.125 2.5
C75 C75Y 133 4.2


Note(*)

  1. Although 2.5V LVTTL interface can also be used, a performance becomes equivalent to -A75 or -A75Y (117 MHz).
  2. Although 2.5V LVTTL interface can also be used, a performance becomes equivalent to -A60 or -A60Y (167 MHz).


512K words x 18 bits organization


Part Number Speed Grade Clock
Frequency
(MHz) 		Clock
Access
Time
MAX.
(ns) 		Supply Voltage
(V) 		Package Remark Data
Sheet
0 to
70°C 		-40 to
+85°C 		Chip I/O
µPD4481181 A65 A65Y 133 6.5 3.3±0.165 3.3 *1 GF:
100-pin LQFP
(14x20mm) 		Flow
Through
Operation 		(218KB)
A75 A75Y 117 7.5 3.3 or 2.5
A85 A85Y 100 8.5
C75 C75Y 117 7.5 2.5±0.125 2.5
C85 C85Y 100 8.5
µPD4481182 A44 A44Y 225 2.8 3.3±0.165 3.3 *2 GF:
100-pin LQFP
(14x20mm) 		Pipeline
Operation 		(221KB)
A50 A50Y 200 3.2
A60 A60Y 167 3.5 3.3 or 2.5
A75 A75Y 133 4.2
C60 C60Y 167 3.5 2.5±0.125 2.5
C75 C75Y 133 4.2


Note(*)

  1. Although 2.5V LVTTL interface can also be used, a performance becomes equivalent to -A75 or -A75Y (117 MHz).
  2. Although 2.5V LVTTL interface can also be used, a performance becomes equivalent to -A60 or -A60Y (167 MHz).


256K words x 32 bits organization


Part Number Speed Grade Clock
Frequency
(MHz) 		Clock
Access
Time
MAX.
(ns) 		Supply Voltage
(V) 		Package Remark Data
Sheet
0 to
70°C 		-40 to
+85°C 		Chip I/O
µPD4481321 A65 A65Y 133 6.5 3.3±0.165 3.3 *1 GF:
100-pin LQFP
(14x20mm) 		Flow
Through
Operation 		(218KB)
A75 A75Y 117 7.5 3.3 or 2.5
A85 A85Y 100 8.5
C75 C75Y 117 7.5 2.5±0.125 2.5
C85 C85Y 100 8.5
µPD4481322 A44 A44Y 225 2.8 3.3±0.165 3.3 *2 GF:
100-pin LQFP
(14x20mm) 		Pipeline
Operation 		(221KB)
A50 A50Y 200 3.2
A60 A60Y 167 3.5 3.3 or 2.5
A75 A75Y 133 4.2
C60 C60Y 167 3.5 2.5±0.125 2.5
C75 C75Y 133 4.2


Note(*)

  1. Although 2.5V LVTTL interface can also be used, a performance becomes equivalent to -A75 or -A75Y (117 MHz).
  2. Although 2.5V LVTTL interface can also be used, a performance becomes equivalent to -A60 or -A60Y (167 MHz).


256K words x 36 bits organization


Part Number Speed Grade Clock
Frequency
(MHz) 		Clock
Access
Time
MAX.
(ns) 		Supply Voltage
(V) 		Package Remark Data
Sheet
0 to
70°C 		-40 to
+85°C 		Chip I/O
µPD4481361 A65 A65Y 133 6.5 3.3±0.165 3.3 *1 GF:
100-pin LQFP
(14x20mm) 		Flow
Through
Operation 		(218KB)
A75 A75Y 117 7.5 3.3 or 2.5
A85 A85Y 100 8.5
C75 C75Y 117 7.5 2.5±0.125 2.5
C85 C85Y 100 8.5
µPD4481362 A44 A44Y 225 2.8 3.3±0.165 3.3 *2 GF:
100-pin LQFP
(14x20mm) 		Pipeline
Operation 		(221KB)
A50 A50Y 200 3.2
A60 A60Y 167 3.5 3.3 or 2.5
A75 A75Y 133 4.2
C60 C60Y 167 3.5 2.5±0.125 2.5
C75 C75Y 133 4.2


Note(*)

  1. Although 2.5V LVTTL interface can also be used, a performance becomes equivalent to -A75 or -A75Y (117 MHz).
  2. Although 2.5V LVTTL interface can also be used, a performance becomes equivalent to -A60 or -A60Y (167 MHz).

ZEROSB is the trademark of NEC Electronics.
ZEROSB is equivalent to ZBT™.
ZBT is the trademark of IDT.



 
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