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CDP1871A - 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 6.5 V (COPIB71AC).
  • N-key lockout The RCA-CDP1871A is a keyboard encoder designed to directly interface betwe.

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Datasheet preview – CDP1871A

Datasheet Details

Part number CDP1871A
Manufacturer GE
File Size 497.00 KB
Description CMOS Keyboard Encoder
Datasheet download datasheet CDP1871A Datasheet
Additional preview pages of the CDP1871A datasheet.

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Full PDF Text Transcription

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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.
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