16M-BIT DYNAMIC RAM
DATA SHEET
µPD42S17405, 4217405
16 M-BIT DYNAMIC RAM 4 M-WORD BY 4-BIT, EDO
MOS INTEGRATED CIRCUIT
Description
The µP...
Description
DATA SHEET
µPD42S17405, 4217405
16 M-BIT DYNAMIC RAM 4 M-WORD BY 4-BIT, EDO
MOS INTEGRATED CIRCUIT
Description
The µPD42S17405, 4217405 are 4,194,304 words by 4 bits CMOS dynamic RAMs with optional EDO. EDO is a kind of the page mode and is useful for the read operation. Besides, the µPD42S17405 can execute CAS before RAS self refresh. The µPD42S17405, 4217405 are packaged in 26-pin plastic TSOP (II) and 26-pin plastic SOJ.
Features
EDO (Hyper page mode) 4,194,304 words by 4 bits organization Single +5.0 V ±10 % power supply Fast access and cycle time
Power consumption Active (MAX.) 660 mW 605 mW 550 mW
Part number
Access time (MAX.) 50 ns 60 ns 70 ns
R/W cycle time (MIN.) 84 ns 104 ns 124 ns
EDO (Hyper page mode) cycle time (MIN.) 20 ns 25 ns 30 ns
µPD42S17405-50, 4217405-50 µPD42S17405-60, 4217405-60 µPD42S17405-70, 4217405-70
µPD42S17405 can execute CAS before RAS self refresh
Power consumption at standby (MAX.) 1.4 mW (CMOS level input)
Part number
Refresh cycle 2,048 cycles/128 ms
Refresh CAS before RAS self refresh CAS before RAS refresh RAS only refresh Hidden refresh CAS before RAS refresh RAS only refresh Hidden refresh
µPD42S17405
µPD4217405
2,048 cycles/32 ms
5.5 mW (CMOS level input)
The information in this document is subject to change without notice. Document No. M10067EJ6V0DS00 (6th edition) Date Published January 1997 N Printed in Japan The mark shows major revised points.
©
1995
µPD42S17405, 4217405
Ordering Information
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