FULLY ENCODED 9046 X N RANDOM ACCESS WRITE-ONLY-MEMORY
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This document provides specifications for the Signetics 25120 fully encoded, random access write-only memory. Key details include: - It employs both enhancement and depletion mode P-channel, N-channel and Neuchannel MOS devices. - A single TTL level clock phase is required to drive the on-board multi-port clock generator. Data refresh is accomplished during CB and LH periods. - The static memory cells are operated dynamically to yield extremely low power dissipation. All inputs and outputs are directly TTL compatible when proper interfacing circuitry is employed.
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FULLY ENCODED 9046 X N RANDOM ACCESS WRITE-ONLY-MEMORY
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- 5. FEATURES • FULLY ENCODED MULTI-PORT ADDRESSING • WRITE CYCLE TIME 80nS (MAX. TYPICAL) • WRITE ACCESS TIME(3) • POWER DISSIPATION 10µW/BIT TYPICAL • CELL REFRESH TIME 1mS (MIN. TYPICAL) • TTL/DTL COMPATIBLE INPUTS(4) • AVAILABLE OUTPUTS “n” • CLOCK LINE CAPACITANCE 2pF MAX.(5) • VCC = +10V • VDD = 0V ±2% • VFF = 6.3Vac(6) APPLICATIONS DON’T CARE BUFFER STORES LEAST SIGNIFICANT CONTROL MEMORIES POST MORTEM MEMORIES (WEAPON SYSTEMS) ARTIFICIAL MEMORY SYSTEMS NON-INTELLIGENT MICRO CONTROLLERS FIRST-IN NEVER-OUT (FINO) ASYNCHRONOUS BUFFERS. OVERFLOW REGISTER (BIT BUCKET) PROCESS TECHNOLOGY 7KH XVH RI 6LJQHWLFV XQLTXH 6(;
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- 15. SIGNETICS • 25120 FULLY ENCODED, 9046 X N, RANDOM ACCESS WRITE ONLY MEMORY TYPICAL CHARACTERISTIC CURVES BIT CAPACITY VS. TEMP. 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 -25 0 25 50 75 100 TEMPERATURE (°C) BITCAPACITY GUARANTEE TYPICAL TYPICAL TYPICAL Iff VS. Vff 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 5 10 15 20 25 Vff Vff (VOLTS AC) Iff 25120 0 3 6 9 12 15 18 21 24 27 30 0 5 10 15 20 25 30 35 40 45 50 NUMBER OF SOCKET INSERTIONS NUMBEROFREMAININGPINS 25120 AQL VS. SELLING PRICE 0.01 0.1 1 10 0.1 1 10 100 SELLING PRICE ($) AQL(%) 25120 NORMAL SLOW PAYING CUSTOMERS 811 E. ARQUES AVENUE • SYNNYVALE CALIFORNIA • 94086 TEL: (408) 739-7700 • TWX: (910) 339-9283 • A subsidiary of CORNING GLASS WORKS D304 MOS-005-39 Copyright 1972 – printed in U.S.A.