參數(shù)資料
型號: MC68HC05F4FB
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 1.789 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 62/130頁
文件大?。?/td> 2089K
代理商: MC68HC05F4FB
MC68HC05F4
MOTOROLA
3-7
MEMORY AND REGISTERS
3
TCSR
EQU
$0008
TIMER CONTROL AND STATUS REGISTER
TCNT
EQU
$0009
TIMER COUNTER REGISTER
TOF
EQU
7
TOF BIT OF TCSR
PROG
EQU
$001C
EEPROM PROGRAM REGISTER
CPEN
EQU
6
CHARGE PUMP ENABLE BIT
ER1
EQU
4
ERASE SELECT BIT 1
ER0
EQU
3
ERASE SELECT BIT 0
LATCH
EQU
2
LATCH BIT
EERC
EQU
1
RC/OSC SELECTOR BIT
EEPGM
EQU
0
EEPROM PROGRAM BIT
EESTARTEQU
$0200
START ADDRESS OF EEPROM
SUMPIN EQU
$FF
DUMMY DATA
ORG
$0680
START
EQU
*
BSET
EERC, PROG
SELECT RC OSCILLATOR
BSR
DELAY
RC OSCILLATOR STABILIZATION
BSET
CPEN, PROG
TURN ON CHARGE PUMP
BSET
LATCH, PROG
ENABLE LATCH BIT
BCLR
ER1, PROG
SELECT PROGRAM (NOT ERASE)
BCLR
ER0, PROG
SELECT PROGRAM (NOT ERASE)
LDA
#SUMPIN
GET DATA
STA
EESTART
BSET
EEPGM, PROG
ENABLE PROGRAMMING POWER
JSR
DELAY
WAIT FOR PROGRAMMING TIME
BCLR
EEPGM, PROG
CLEAR EEPGM
JSR
DELAY
WAIT FOR PROG VOLTAGE TO FALL
BCLR
LATCH, PROG
CLEAR LATCH
BCLR
CPEN, PROG
DISABLE CHARGE PUMP
CMP
EESTART
VERIFY
BNE
OUT1
CLC
CLEAR CARRY BIT IF NO ERROR
OUT
RTS
OUT1
SEC
FLAG AN ERROR
RTS
*THIS ROUTINE GIVES A 15MS (+/-1MS) DELAY AT 1 MHZ BUS. THE SAME DELAY
* ROUTINE IS USED IN THIS EXAMPLE FOR SIMPLICITY, USING THE LONGEST DELAY
* TIME. USERS WILL WANT TO WRITE SHORTER DELAY ROUTINES FOR APPLICATIONS
*IN WHICH SPEED IS IMPORTANT.
DELAY
EQU
*
LDX
#15
COUNT OF 15
TIMLP
BCLR
TOF, TCSR
CLEAR TOF
BRCLR
TOF, TCSR
WAIT FOR TOF FLAG
DECX
BNE
TIMLP
COUNT DOWN TO 0
RTS
TPG
33
05F4Book Page 7 Tuesday, August 5, 1997 1:10 pm
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