參數(shù)資料
型號: MC68HC08LT8CFGE
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP44
封裝: 10 X 10 MM, 1.40 MM THICKNESS, 0.80 MM PITCH, ROHS COMPLIANT, MS-026BCB, LQFP-44
文件頁數(shù): 15/156頁
文件大?。?/td> 1107K
代理商: MC68HC08LT8CFGE
MC68HC08LT8 Data Sheet, Rev. 1
Freescale Semiconductor
111
Chapter 11
Keyboard Interrupt Module (KBI)
11.1 Introduction
The keyboard interrupt module (KBI) provides four independently maskable external interrupts which are
accessible via PTA0–PTA3. When a port pin is enabled for keyboard interrupt function, an internal pull-up
device is also enabled on the pin.
11.2 Features
Features of the keyboard interrupt module include the following:
Four keyboard interrupt pins with pull-up devices
Separate keyboard interrupt enable bits and one keyboard interrupt mask
Programmable edge-only or edge- and level- interrupt sensitivity
Exit from low-power modes
11.3 I/O Pins
The eight keyboard interrupt pins are shared with standard port I/O pins. The full name of the KBI pins
are listed in Table 11-1. The generic pin name appear in the text that follows.
Addr.
Register Name
Bit 7
654321
Bit 0
$001B
Keyboard Status and
Control Register
(KBSCR)
Read:
0000
KEYF
0
IMASKK
MODEK
Write:
ACKK
Reset:
00000000
$001C
Keyboard Interrupt
Enable Register
(KBIER)
Read:
0000
KBIE3
KBIE2
KBIE1
KBIE0
Write:
Reset:
00000000
= Unimplemented
Figure 11-1. KBI I/O Register Summary
Table 11-1. Pin Name Conventions
KBI Generic Pin Name
Full MCU Pin Name
Pin Selected for KBI Function
by KBIEx Bit in KBIER
KBI0–KBI3
PTA0/KBI0–PTA3/KBI3
KBIE0–KBIE3
相關(guān)PDF資料
PDF描述
MC68HC11G5CFN 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC84
MC68HC11G5CFN 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC84
MC68HC11L6VFU23 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PQFP64
MC68HC11L6CFU22 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP64
MC68HC11L6VFU22 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP64
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC08MR4 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:In-Circuit Simulator
MC68HC08P4 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
MC68HC08QT1 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers
MC68HC08QT2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers
MC68HC08QT4 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC08 Microcontrollers