DATA SHEET
MOS INTEGRATED CIRCUIT
µ PD448012-X
8M-BIT CMOS STATIC RAM
512K-WORD BY 16-BIT
EXTENDED TEMPERATURE OPERATION
Description
The µPD448012-X is a high speed, low power, 8,388,608 bits (524,288 words by 16 bits) CMOS static RAM.
The µPD448012-X has two chip enable pins (/CE1, CE2) to extend the capacity.
The µPD448012-X is packed in 48-pin PLASTIC TSOP (I) (Normal bent).
Features
• 524,288 words by 16 bits organization
• Fast access time: 55, 70, 85, 100, 120 ns (MAX.)
• Byte data control: /LB (I/O1 - I/O8), /UB (I/O9 - I/O16)
• Low voltage operation
(B version: VCC = 2.7 to 3.6 V, C version: VCC = 2.2 to 3.6 V)
• Low VCC data retention : 1.0 V (MIN.)
• Operating ambient temperature: TA = –25 to +85°C
• Output Enable input for easy application
• Two Chip Enable inputs: /CE1, CE2
Part number
Access time
ns (MAX.)
Operating supply Operating ambient
Supply current
voltage
temperature
At operating
At standby
At data retention
V
°C
mA (MAX.)
µA (MAX.)
µA (MAX.)
−25 to +85
15
6
µPD448012-BxxX
55, 70, 85, 100
2.7 to 3.6
µPD448012-CxxX
70, 85, 100, 120
2.2 to 3.6
45
Note
45
Note Cycle time ≥ 70 ns, µPD448012-B55X : 50 mA
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. M14466EJ5V0DS00 (5th edition)
Date Published July 2001 NS CP (K)
Printed in Japan
The mark 5 shows major revised points.
©
1999