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UPD44164085

NEC
Part Number UPD44164085
Manufacturer NEC
Description (UPD44164085/185/365) 18M-BIT DDRII SRAM SEPARATE I/O 2-WORD BURST OPERATION
Published Feb 16, 2006
Detailed Description DATA SHEET MOS INTEGRATED CIRCUIT µPD44164085, 44164185, 44164365 18M-BIT DDRII SRAM SEPARATE I/O 2-WORD BURST OPERATI...
Datasheet PDF File UPD44164085 PDF File

UPD44164085
UPD44164085

Overview
DATA SHEET MOS INTEGRATED CIRCUIT µPD44164085, 44164185, 44164365 18M-BIT DDRII SRAM SEPARATE I/O 2-WORD BURST OPERATION Description The µPD44164085 is a 2,097,152-word by 8-bit, the µPD44164185 is a 1,048,576-word by 18-bit and the µPD44164365 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 µPD44164085, µPD44164185 and µPD44164365 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 • Separate independent read and write data ports • DDR read or write operation initiated each cycle • Pipelined double data rate operation • Separate 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.
M15823EJ7V1DS00 (7th e...


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