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83C51KB

83C51KB首页预览图
型号: 83C51KB
PDF文件:
  • 83C51KB PDF文件
  • 83C51KB PDF在线浏览
功能描述: HIGH PERFORMANCE KEYBOARD MICROCONTROLLER
PDF文件大小: 273.75 Kbytes
PDF页数: 共19页
制造商: INTEL[Intel Corporation]
制造商LOGO: INTEL[Intel Corporation] LOGO
制造商网址: http://www.intel.com
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PDF页面索引
120%
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.
COPYRIGHT © INTEL CORPORATION, 1996 March 1996 Order Number: 272800-001
83C51KB
HIGH PERFORMANCE
KEYBOARD MIC ROC ON TRO LLE R
The 83C51KB is a highly integrated keyboard microcontroller for the standard and advanced desktop
keyboard industry. The integration of external components into the microcont roller 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 (CHM OS) design rules.
Direct Drive LED Outputs
Four Pins (P3.7:4)
13 mA Typical Current Sink
Capability
20 pF Cap On-chip for RC Resonator
Frequency Selectable (4-6 MHz)
8 Dedicated Key Scan Input (KSI) Pins
Schmitt-trigger Inputs
External Interrupt
Level Detect Interrupt Mode for
Automatic Power-down Exit
16 Dedicated Key Scan Output (KSO)
Pins with Quasi-bidirecti onal Port
Drivers
No External Resistor Required
Located on P0.7:0 and P2.7:0
4-Kbyte On-c hip ROM Memory
128-byte On-chip RAM Memory
Clock/Data Drivers to Motherboard
Strong Pullup Drivers for Keyboard
Cable Communication
8X42 Compatible Interface
Selecta ble exte rnal interrup t for
Clock
ONCE mode (On-chip Emula tion)
Power-on Reset Mode
Automatic Operation
5 Volt D.C. Operation
Reduces Ma nufacturing Cos t by
Reducing Overall Component Count
Configurable Timer (16 bit or 2 by 8 Bit)
Uses Industry Standard Design Tools
Control Oriented Instruction Set
Industry Stand ard Architect ure
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