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UPD2114L-2 Datasheet دیتاشیت PDF دانلود

دیتاشیت - NEC - 4K-Bit Static RAM

شماره قطعه UPD2114L-2
شرح مفصل 4K-Bit Static RAM
تولید کننده NEC 
آرم NEC 


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UPD2114L-2 شرح
NEe Microcomputers, Inc.
NEe
".PD2114L
I'PD2114L·1
I' PD2114L·2
JI. PD2114L·3
JI. PD2114L·5
DESCRIPTION
4098 BIT (1024 )( 4 BITS) STATIC RAM
The NEC I.lPD2114L is a 4096 bit static Random Access Memory organized as 1024
words by 4 bits using N-channeISilicon-gate MOS technology_ It uses fully DC stable
(static) circuitry throughout, in both the array and the decoding_ It therefore requires
no clocks or refreshing to operate and simplifies system design. The data is read out
nondestructively and has the same polarity as the input data_ Common input/output
pins are provided.
II
The I.lPD2114L is designed for memory applications where high performance, low cost,
large bit storage, and simple interfacing are important design objectives. The I.lPD2114L
is placed in an 18-pin package for the highest possible density.
It is directly TTL compatible in all respects: inputs, outputs, and a single +5V supply.
A separate Chip Select (CS) lead allows easy selection of an individual package when
outputs are OR-Tied.
FEATURES
Access Time: Selection from 150-450 ns
• Single +5 Volt Supply
• Directly TTL Compatible - All Inputs and Outputs
• Completely Static - No Clock or Timing Strobe. Required
• Low Operating Power - Typically 0.06 mW/8it
• Identical Cycle and Access Times
• Common Data Input and Output using Three-State Output
• High Density 18-pin Plastic and Ceramic Packages
• Replacement for 2114L and Equivalent Devices
PIN CONFIGURATION
A6
A5
A4
A3
Ao
A,
A2
IT
GND
Vee
A7
AS
Ag
1/0,
1102
1/03
1/0 4
WE
PIN NAMES
AO·Ag
Address Inputs
WE
es
110,-1/04
Write Enable
ehip Select
Data Input/Output
Vee
Power (+5V)
GND
Ground
Rev/l
59

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