参数资料
型号: MC68HC05V7FN
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC68
封装: PLASTIC, LCC-68
文件页数: 103/170页
文件大小: 589K
代理商: MC68HC05V7FN
MOTOROLA
SECTION 3: EPROM and EEPROM
Page 24
MC68HC05V7 Specification Rev. 1.0
BSET
CPEN,PROG
TURN ON CHARGE PUMP
BSET
LATCH,PROG
ENABLE LATCH BIT
BCLR
ER1,PROG
ENSURE PROGRAM (NOT ERASE)
BCLR
ER0,PROG
ENSURE PROGRAM (NOT ERASE)
LDA
#SUMPIN
GET DATA
STA
EESTART
BSET
EEPGM, PROG
ENABLE PROGRAMMING POWER
JSR
DELAY
WAIT FOR PROGRAM 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
LDA
#SUMPIN
CMP
EESTART
VERIFY
BNE
OUT1
CLC
CLEAR CARRY BIT FOR NO ERROR
OUT
RTS
OUT1
SEC
FLAG AN ERROR
RTS
* THIS ROUTINE GIVES ABOUT A 10 MS DELAY FOR A 2.1Mhz 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
*
LDA
TCNTH
READ MS BYTE OF TIMER COUNTER
ADD
#$15
ADD OFFSET
STA
TCMPH
STORE BACK IN O/P COMPARE MS BYTE
LDA
TCNTL
READ LS BYTE OF TCR
STA
TCMPL
STORE INTO O/P COMPARE LS BYTE
BRCLR
OCF,TSR,*
WAIT FOR OCF FLAG TO OCCUR
RTS
3.2
OPERATION IN STOP AND WAIT
The RC oscillator for the EEPROM is automatically disabled when entering STOP mode.
The user may want to ensure that the RC oscillator is disabled before entering WAIT mode
to help conserve power.
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