參數(shù)資料
型號(hào): AN2635
廠商: 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述: On-Chip FLASH Programming Routines
中文描述: 片上閃存編程例程
文件頁(yè)數(shù): 18/36頁(yè)
文件大?。?/td> 150K
代理商: AN2635
On-Chip FLASH Programming Routines, Rev. 4
18
Freescale Semiconductor
On-Chip Routines Flowcharts
Figure 3. PutByte Routine
PutByte
SAVE X TO STACK
SAVE A (TRANSMIT DATA) TO STACK
A = 10
PTA0 = 0
YES
NO
MAKE ~2 BIT DELAY
X = #BitX2
DECREMENT X = 0
NO
YES
C BIT = 1 (STOP BIT)
ROTATE TRANSMIT DATA (STACK)
RIGHT THROUGH C BIT
C
C
TRANSMIT DATA
C BIT = 0
NO
SET PTA0 AS INPUT
(NOTE 1)
YES
SET PTA0 AS OUTPUT
(NOTE 2)
ECGST BIT IN OSCSTAT = 0
(INTERNAL CLOCK)
YES
NO
ADJUST BIT TIMING FOR INTERNAL CLOCK
X = BitTimeI
ADJUST BIT TIMING FOR EXTERNAL CLOCK
X = BitTimeE
DECREMENTED X = 0
YES
NO
ARE 10 BITS SENT
(DECREMENTED A = 0)
RTS
RESTORE TRANSMIT DATA (STACK) TO A
RESTORE X FROM STACK
NOTES:
1. PTA0
input pulls up high.
2. PTA0
output drives low.
outHi:
outLow:
outDelay:
NO
YES
delOut:
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