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HC705V8GRS/D Datasheet(PDF) 41 Page - NXP Semiconductors

Part # HC705V8GRS/D
Description  The Motorola MC68HC705V8 microcontroller is a custom HC05 based MCU featuring a Message Data Link Controller (MDLC) module and on-chip power regulation.
PDF  172 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

HC705V8GRS/D Datasheet(HTML) 41 Page - NXP Semiconductors

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SECTION 3: EPROM AND EEPROM
Page 30
MC68HC705V8 Specification Rev. 2.1
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
3.5
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.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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