參數(shù)資料
型號(hào): MC68HC11E1
廠商: Motorola, Inc.
英文描述: 8-channel, 8-bit analog-to-digital (A/D) converter
中文描述: 8通道,8位模擬至數(shù)字(A / D)轉(zhuǎn)換器
文件頁(yè)數(shù): 232/268頁(yè)
文件大?。?/td> 2221K
代理商: MC68HC11E1
Application Note
AN1060 — Rev. 1.0
232
MOTOROLA
50 *****
51 * Now wait for character from target to indicate it's ready for
52 * data to be programmed into EPROM
53 B627 132E20FC WT4FF BRCLR SCSR RDRF WT4FF Wait for RDRF
54 B62B 962F LDAA SCDR Clear RDRF, don't need data
55 B62D CED000 LDX #EPSTRT Point at start of EPROM
56 * Handle turn-on of Vpp
57 B630 18CE523D WT4VPP LDY #21053 Delay counter (about 200ms)
58 B634 150402 BCLR PORTB RED Turn off RED LED
59 B637 960A DLYLP2 LDAA PORTE [3] Wait for Vpp to be ON
60 B639 2AF5 BPL WT4VPP [3] Vpp sense is on port E MSB
61 B63B 140402 BSET PORTB RED [6] Turn on RED LED
62 B63E 1809 DEY [4]
63 B640 26F5 BNE DLYLP2 [3] Total loop time = 19 cyc
64 * Vpp has been stable for 200ms
65
66 B642 18CED000 LDY #EPSTRT X=Tx pointer, Y=verify pointer
67 B646 8D23 BSR SEND1 Send first data to target
68 B648 8C0000 DATALP CPX #0 X points at $0000 after last
69 B64B 2702 BEQ VERF Skip send if no more
70 B64D 8D1C BSR SEND1 Send another data char
71 B64F 132E20FC VERF BRCLR SCSR RDRF VERF Wait for Rx ready
72 B653 962F LDAA SCDR Get char and clr RDRF
73 B655 18A100 CMPA 0,Y Does char verify
74 B658 2705 BEQ VERFOK Skip error if OK
75 B65A 150403 BCLR PORTB (RED+GREEN) Turn off LEDs
76 B65D 2007 BRA DUNPRG Done (programming failed)
77 B65F
78 B65F 1808 VERFOK INY Advance verify pointer
79 B661 26E5 BNE DATALP Continue till all done
80 B663
81 B663 140401 BSET PORTB GREEN Grn LED ON
82 B666
83 B666 150482 DUNPRG BCLR PORTB (RESET+RED) Red OFF, apply reset
84 B669 20FE BRA * Done so just hang
85 B66B
86 **************************************************
87 * Subroutine to get & send an SCI char. Also
88 * advances pointer (X).
89 **************************************************
90 B66B A600 SEND1 LDAA 0,X Get a character
91 B66D 132E80FC TRDYLP BRCLR SCSR TDRE TRDYLP Wait for TDRE
92 B671 972F STAA SCDR Send character
93 B673 08 INX Advance pointer
94 B674 39 RTS ** Return **
95
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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