A/D CONVERTER S3C84E5/C84E9/P84E9
15-6
F PROGRAMMING TIP — Configuring A/D Converter
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LD P3CONH, #11111111B ; P3.7–P3.4 A/D Input MODE
LD P3CONL, #11111111B ; P3.3–P3.0 A/D Input MODE
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LD ADCON, #00000001B ; Channel ADC0, fxx, Conversion start
AD0_CHK: TM ADCON, #00001000B ; A/D conversion end → EOC check
JR Z, AD0_CHK ; No
LD AD0BUFH, ADDATAH ; 8-bit conversion data
LD AD0BUFL, ADDATAL ; 2-bit conversion data
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LD ADCON, #00110001B ; Channel ADC3, fxx, Conversion start
AD3_CHK: TM ADCON, #00001000B ; A/D conversion end → EOC check
JR Z, AD3_CHK ; No
LD AD3BUFH, ADDATAH ; 8-bit conversion data
LD AD3BUFL, ADDATAL ; 2-bit conversion data
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