Interfacing the M68HC05 MCU to the MC145051 A/D Converter

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Freescale Semiconductor, Inc.Application Note*** Clock the serial clock pinL1_3 bset SER_CLK,PORTA ;ser_clk = 1bclr SER_CLK,PORTA ;ser_clk = 0decx;decrease counter loopbne LOOP1 ;is LOOP1 finished?ldx #6T ;init counter for LOOP2nc...Freescale Semiconductor, I*** Read the serial input pinLOOP2 brclr SER_IN,PORTA,L2 ;carry bit = serial inL2 rol RESULT+1 ;rotate left resultrol RESULT*** Clock the serial clock pinbset SER_CLK,PORTA ;ser_clk = 1bclr SER_CLK,PORTA ;ser_clk = 0decx;decrease counter loopbne LOOP2 ;is LOOP2 finished?*** CS* high to finish serial transferbset CS,PORTA ;CS* line is highFOR BRA FOR ;branch foreverorg $03FE ;reset vectordw STARTAN1228 — Rev. 2.030 MOTOROLAFor More Information On This Product,Go to: www.freescale.com
Freescale Semiconductor, Inc.Application NoteNotesNotesFreescale Semiconductor, Inc...AN1228 — Rev. 2.0MOTOROLA 31For More Information On This Product,Go to: www.freescale.com
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Interfacing the M68HC05 MCU to the MC145051 A/D Converter

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