參數(shù)資料
型號(hào): MC68HC11K1
廠商: Motorola, Inc.
元件分類: 8位微控制器
英文描述: 8-Bit Microcontroller(8位微控制器)
中文描述: 8位微控制器(8位微控制器)
文件頁(yè)數(shù): 14/20頁(yè)
文件大?。?/td> 286K
代理商: MC68HC11K1
MOTOROLA
14
AN1242/D
Single-Chip MC68HC711K4
MC68HC11K(0/1) + PSD412A1
*
* port B, C, and F I/O
*
REGBASE equ $0000
DDRB equ $02
PORTB equ $04
DDRC equ $07
PORTC equ $06
DDRF equ $03
PORTF equ $05
*
* read port B[7:0]
*
clr REGBASE + DDRB
ldaa REGBASE + PORTB
*
* write pattern to port C[7:0]
*
ldaa #$FF
staa REGBASE + DDRC
ldaa #$55
staa REGBASE + PORTC
*
* configure PF[3:0] for inputs,
* PF[7:4] for outputs, poll until PF0
* is set to 1, then write pattern to
* PF[7:4].
*
ldx #REGBASE
ldaa #$F0
staa DDRF,X
POLLPF0 brclr PORTF,X,$01,POLLPF0
bset PORTF,X,$A0
*
* port B, A, and E I/O
*
REGBASE equ $2800
PB_DDR equ $07
PB_INDATA equ $01
PB_OUTDATA equ $05
PB_CONTROL equ $03
PA_DDR equ $06
PA_INDATA equ $00
PA_OUTDATA equ $04
PA_CONTROL equ $02
PE_DDR equ $26
PE_INDATA equ $20
PE_OUTDATA equ $24
PE_CONTROL equ $02
*
* make ports B, A, and E exclusively
* available for I/O
*
ldaa #$FF
staa REGBASE + PB_CONTROL
staa REGBASE + PA_CONTROL
staa REGBASE + PE_CONTROL
*
* read port B[7:0]
*
clr REGBASE + PB_DDR
ldaa REGBASE + PB_INDATA
*
* write pattern to port A[7:0]
*
ldaa #$FF
staa REGBASE + PA_DDR
ldaa #$55
staa REGBASE + PA_OUTDATA
*
* configure PE[3:0] for inputs,
* PE[7:4] for outputs, poll until PE0
* is set to 1, then write pattern to
* PE[7:4].
*
ldx #REGBASE
ldaa #$F0
staa PE_DDR,X
POLLPE0 brclr PE_INDATA,X,$01,POLLPE0
bset PE_OUTDATA,X,$A0
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