CDP1871A - CMOS Keyboard Encoder

Key Features

Directly interfaces with COP1BOO-series microprocessors.
Low power dissipation.
3-state outputs.
Scans and generates code for 53 key ASCII keyboard plus 32 HEX keys (SPST mechanical contact switches).
Shift, control, and alpha lock inputs.
RC-controlled debounce circuitry.
Single 4 to 10.5 V supply (COPIB71A); 4 to 6.5 V (COPIB71AC).
N-key lockout The RCA-CDP1871A is a keyboard encoder designed to directly interface betwe.

CDP1871A cmos keyboard encoder by GE - Datasheet Preview

Datasheet Details

Part number	CDP1871A
Manufacturer	GE
File Size	497.00 KB
Description	CMOS Keyboard Encoder
Datasheet	CDP1871A Datasheet

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Other Datasheets by GE

Part Number	Description
CDP1871AC	CMOS Keyboard Encoder
CDP1872C	High-Speed 8-Bit Input and Output Ports
CDP1874C	High-Speed 8-Bit Input and Output Ports
CDP1875C	High-Speed 8-Bit Input and Output Ports
CDP1877	Programmable Interrupt Controller

Full PDF Text Transcription (Reference)

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_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ CMOS Peripherals CDP1871A,CDP1871AC ~VDD , " t SliiFT J 38 1 CONTROL 4 37t--- ALPHA 3'5f-- DEBOUNCE 06-- 6 " 33 ............. DA f--32f-- BUS 7 31 BUS (; 3O~BUS" 29>-- BUS 4 2Bf-- BlJS 3 ::3::'-"'E"" 26 - BBUUSS2! ~~; 0 19 22 C52 20 21 e5i TOP VIEW TERMINAL ASSIGNMENT CMOS Keyboard Encoder Features: • Directly interfaces with COP1BOO-series microprocessors • Low power dissipation • 3-state outputs • Scans and generates code for 53 key ASCII keyboard plus 32 HEX keys (SPST mechanical contact switches) • Shift, control, and alpha lock inputs • RC-controlled debounce circuitry • Single 4 to 10.5 V supply (COPIB71A); 4 to 6.