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DATA SHEET
MOS INTEGRATED CIRCUIT
μ
PD44324084-A, 44324094-A, 44324184-A, 44324364-A
36M-BIT DDR II SRAM
4-WORD BURST OPERATION
Description
The
μ
PD44324084-A is a 4,194,304-word by 8-bit, the
μ
PD44324094-A is a 4,194,304-word by 9-bit, the
μ
PD44324184-
A is a 2,097,152-word by 18-bit and the
μ
PD44324364-A is a 1,048,576-word by 36-bit synchronous double data rate
static RAM fabricated with advanced CMOS technology using full CMOS six-transistor memory cell.
The
μ
PD44324084-A,
μ
PD44324094-A,
μ
PD44324184-A and
μ
PD44324364-A integrate 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
•
165-pin PLASTIC BGA (13 x 15)
•
HSTL interface
•
PLL circuitry for wide output data valid window and future frequency scaling
•
Pipelined double data rate operation
•
Common data input/output bus
•
Four-tick burst for reduced address frequency
•
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. Normal operation is restored in 1,024 cycles after clock is resumed.
•
User programmable impedance output
•
Fast clock cycle time : 3.7 ns (270 MHz), 4.0 ns (250 MHz), 5.0 ns (200 MHz)
•
Simple control logic for easy depth expansion
•
JTAG boundary scan
•
Operating ambient temperature: Commercial T
A
= 0 to +70°C
Industrial
T
A
= –40 to +85°C
(-E37, -E40, -E50)
(-E40Y, -E50Y)
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. M19872EJ1V0DS00 (1st edition)
Date Published July 2009
Printed in Japan
2009
Embedded System
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