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KR2376 Datasheet Keyboard Encoder Read Only Memory

Manufacturer: SMSC (now Microchip Technology)

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General Description

TheSMC KR2376-XX isa2376-bit Read Only Memory with all the logic necessary to encode single pole single throw keyboard closures into a usable 9-bit code.

Data and strobe outputs are directly compatible with TTLlDTL or MOS logic arrays without the use of any special interface components.

The KR2376-XX is fabricated with low threshold, P-channel technology and contains 2942 P-channel enhancement mode transistors on a single monolithic chip, available in a 40 pin dual-in-line package.

Overview

STANDARD MICROSYSTEMS =CORPOR~AT~IO~N~_ _ KR2376-XX Keyboard Encoder Read Only.

Key Features

  • D Outputs directly compatible with TTUDTL or MOS logic arrays. o External control provided for output polarity selection. D External control provided for selection of odd or even parity. D Two key roll-over operation. D N-key lockout. D Programmable coding with a single mask change. D Self-contained oscillator circuit. D Externally controlled delay network provided to eliminate the effect of contact bounce. D One integrated circuit required for complete keyboard assembly. D Static charge protect.

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