83C51KB

更新时间： 2022-11-29 01:24:46

品牌	Logo	应用领域
英特尔 - INTEL		/
页数	文件大小	规格书
19页	253K
描述
HIGH PERFORMANCE KEYBOARD MICROCONTROLLER

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数据手册

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83C51KB 数据手册

83C51KB

HIGH PERFORMANCE

KEYBOARD MICROCONTROLLER

■ Direct Drive LED Outputs

■ 128-byte On-chip RAM Memory

— Four Pins (P3.7:4)

■ Clock/Data Drivers to Motherboard

— 13 mA Typical Current Sink

Capability

— Strong Pullup Drivers for Keyboard

Cable Communication

— 8X42 Compatible Interface

■ 20 pF Cap On-chip for RC Resonator

— Frequency Selectable (4-6 MHz)

— Selectable external interrupt for

Clock

■ 8 Dedicated Key Scan Input (KSI) Pins

— Schmitt-trigger Inputs

■ ONCE mode (On-chip Emulation)

■ Power-on Reset Mode

— External Interrupt

— Automatic Operation

— Level Detect Interrupt Mode for

Automatic Power-down Exit

■ 5 Volt D.C. Operation

■ 16 Dedicated Key Scan Output (KSO)

Pins with Quasi-bidirectional Port

Drivers

■ Reduces Manufacturing Cost by

Reducing Overall Component Count

■ Configurable Timer (16 bit or 2 by 8 Bit)

■ Uses Industry Standard Design Tools

■ Control Oriented Instruction Set

■ Industry Standard Architecture

— No External Resistor Required

— Located on P0.7:0 and P2.7:0

■ 4-Kbyte On-chip ROM Memory

The 83C51KB is a highly integrated keyboard microcontroller for the standard and advanced desktop

keyboard industry. The integration of external components into the microcontroller reduces overall keyboard

control system manufacturing cost in terms of the number of components used, the amount of PCB space

required, reduced inventory, and a reduction in required assembly activities. In addition, the integration

reduces the number and amount of software routines needed for signal debounce and input status poll

operation. There is a resultant reduction in CPU overhead as well as on-chip memory requirements. The

83C51KB product line is manufactured with Intel state of the art complimentary high-performance metallic

oxide semiconductor (CHMOS) design rules.

Information in this document is provided in connection with Intel products. Intel assumes no liability whatsoever, including infringement of

any patent or copyright, for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products.

Intel retains the right to make changes to these specifications at any time, without notice. Microcontroller products may have minor varia-

tions to this specification known as errata.

March 1996

Order Number: 272800-001

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