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NEC - (UPD44164082/182/362) 18M-BIT DDRII SRAM 2-WORD BURST OPERATION

Numéro de référence UPD44164082
Description (UPD44164082/182/362) 18M-BIT DDRII SRAM 2-WORD BURST OPERATION
Fabricant NEC 
Logo NEC 





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UPD44164082 fiche technique
DATA SHEET
MOS INTEGRATED CIRCUIT
µPD44164082, 44164182, 44164362
18M-BIT DDRII SRAM
2-WORD BURST OPERATION
Description
The µPD44164082 is a 2,097,152-word by 8-bit, the µPD44164182 is a 1,048,576-word by 18-bit and the
µPD44164362 is a 524,288-word by 36-bit synchronous double data rate static RAM fabricated with advanced CMOS
technology using full CMOS six-transistor memory cell.
The µPD44164082, µPD44164182 and µPD44164362 integrates unique synchronous peripheral circuitry and a
burst counter. All input registers controlled by an input clock pair (K and /K) are latched on the positive edge of K and
/K.
These products are suitable for application which require synchronous operation, high speed, low voltage, high
density and wide bit configuration.
These products are packaged in 165-pin PLASTIC BGA.
Features
1.8 ± 0.1 V power supply and HSTL I/O
DLL circuitry for wide output data valid window and future frequency scaling
Pipelined double data rate operation
Common data input/output bus
Two-tick burst for low DDR transaction size
Two input clocks (K and /K) for precise DDR timing at clock rising edges only
Two output clocks (C and /C) for precise flight time
and clock skew matching-clock and data delivered together to receiving device
Internally self-timed write control
Clock-stop capability with µs restart
User programmable impedance output
Fast clock cycle time : 4.0 ns (250 MHz), 5.0 ns (200 MHz), 6.0 ns (167 MHz)
Simple control logic for easy depth expansion
JTAG boundary scan
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 products and/or types are available in every country. Please check with an NEC Electronics
sales representative for availability and additional information.
Document No. M15821EJ7V2DS00 (7th edition)
Date Published August 2004 NS CP(K)
Printed in Japan
The mark shows major revised points.
2001

PagesPages 32
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