參數(shù)資料
型號: MC68HC08GP8AMFB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8.2 MHz, MICROCONTROLLER, PQFP44
封裝: PLASTIC, QFP-44
文件頁數(shù): 126/126頁
文件大?。?/td> 4243K
代理商: MC68HC08GP8AMFB
Keyboard Interrupt (KBI) Module
I/O Registers
MC68HC08GP8A
Data Sheet
MOTOROLA
Keyboard Interrupt (KBI) Module
99
ACKK — Keyboard Acknowledge Bit
Writing a logic 1 to this write-only bit clears the keyboard interrupt request.
ACKK always reads as logic 0. Reset clears ACKK.
IMASKK — Keyboard Interrupt Mask Bit
Writing a logic 1 to this read/write bit prevents the output of the keyboard
interrupt mask from generating interrupt requests. Reset clears the IMASKK bit.
1 = Keyboard interrupt requests masked
0 = Keyboard interrupt requests not masked
MODEK — Keyboard Triggering Sensitivity Bit
This read/write bit controls the triggering sensitivity of the keyboard interrupt
pins. Reset clears MODEK.
1 = Keyboard interrupt requests on falling edges and low levels
0 = Keyboard interrupt requests on falling edges only
8.7.2 Keyboard Interrupt Enable Register
The keyboard interrupt enable register enables or disables each port A pin to
operate as a keyboard interrupt pin.
KBIE7–KBIE0 — Keyboard Interrupt Enable Bits
Each of these read/write bits enables the corresponding keyboard interrupt pin
to latch interrupt requests. Reset clears the keyboard interrupt enable register.
1 = PTAx pin enabled as keyboard interrupt pin
0 = PTAx pin not enabled as keyboard interrupt pin
Address: $001B
Bit 7
654321
Bit 0
Read:
KBIE7
KBIE6
KBIE5
KBIE4
KBIE3
KBIE2
KBIE1
KBIE0
Write:
Reset:
00000000
Figure 8-5. Keyboard Interrupt Enable Register (INTKBIER)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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