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CDP1821C3

Intersil Corporation
Part Number CDP1821C3
Manufacturer Intersil Corporation
Description High-Reliability CMOS 1024-Word x 1-Bit Static RAM
Published Mar 23, 2005
Detailed Description CDP1821C/3 March 1997 High-Reliability CMOS 1024-Word x 1-Bit Static RAM Description The CDP1821C/3 is a 1024-word x 1-...
Datasheet PDF File CDP1821C3 PDF File

CDP1821C3
CDP1821C3

Overview
CDP1821C/3 March 1997 High-Reliability CMOS 1024-Word x 1-Bit Static RAM Description The CDP1821C/3 is a 1024-word x 1-bit CMOS silicon-on-sapphire (SOS), fully static, random-access memory designed for use in CDP1800 microprocessor systems.
This device has a recommended operating voltage range of 4V to 6.
5V.
The output state of the CDP1821C/3 is a function of the input address and chip-select states only.
Valid data will appear at the output in one access time following the latest address change to a selected chip.
After valid data appears, the address may be changed immediately.
It is not necessary to clock the chip-select input or any other input terminal for fully static operation; therefore the chip-select input may be used as an additional address input.
When the device is in an unselected state (CS = 1), the internal write circuitry and output sense amplifier are disabled.
This feature allows the three-state data outputs from many arrays to be OR-tied to a common bus for easy memory expansion.
Features • Static CMOS Silicon-On-Sapphire Circuitry CD4000Series Compatible • Compatible with CDP1800-Series Microprocessors at Maximum Speed • Fast Access Time.
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100ns Typ.
at VDD = 5V • Single Voltage Supply • No Precharge or External Clocks Required • Low Quiescent and Operating Power • Separate Data Inputs and Outputs • High Noise Immunity .
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30% of VDD • Memory Retention for Standby Battery Voltage Down to 2V at +25oC • Latch-Up-Free Transient-Radiation Tolerance Ordering Information PACKAGE SBDIP TEMP.
RANGE -55oC to +125oC PART NUMBER CDP1821CD3 PKG.
NO.
D16.
3 Pinout CDP1821C/3 (SBDIP) TOP VIEW CS A0 A1 A2 A3 A4 DO VSS 1 2 3 4 5 6 7 8 16 VDD 15 DI 14 RD/WR 13 A9 12 A8 11 A7 10 A6 9 A5 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.
intersil.
com or 407-727-9207 | Copyright © Intersil Corporation 1999 File Number 2983.
1 6-5 CDP1821C/3 Fu...


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