參數(shù)資料
型號(hào): MC68HC05K3
廠商: Motorola, Inc.
英文描述: 8-Bit Microcontroller Units (MCU).(8位微控制器)
中文描述: 8位微控制器單元(MCU)。(8位微控制器)
文件頁(yè)數(shù): 52/56頁(yè)
文件大小: 311K
代理商: MC68HC05K3
Application Note
Assembly Code Modules
AN1288
52
MOTOROLA
VERIFY clra ; Verify programming of the PEEPROM
clr PEBSR
clrx
lda #$10
sta COUNTER
VERILOOP rol PECSR ; Read the data in the current row
rora
inc PEBSR
brclr PEPCZF,PECSR,VERILOOP
cmp DATA,x ; Compare the read data with the user data
bne ERROR
incx ; Increment the offset to the user data buffer
dec COUNTER
bne VERILOOP
GOOD bra GOOD
ERROR bra ERROR
PROGBYTE lsra ; Shift out the least significant bit to the
bcc CLEARBIT ; Carry bit
bset CPEN,PECSR ; Set the charge pump enable bit
bset PEPGM,PECSR ; Set PEEPROM programming bit
sta TEMP ; Delay for 10msec
lda #$0A
bsr DELAY
lda TEMP
bclr PEPGM,PECSR
bclr CPEN,PECSR
CLEARBIT inc PEBSR ; Continue programming bits until the PEPCZR
brclr PEPCZF,PECSR,PROGBYTE ; bit is set
rts
DELAY
nop
DELOOP nop
nop
decx
bne DELOOP
deca
bne DELAY
clra
sta $3F0
rts
ldx #$C6
org $3FE
fdb start
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