CHAPTER 11 A/D CONVERTER
533
User’s Manual U15195EJ5V0UD
11.7 Operation in A/D Trigger Mode
Setting the ADCE0 or ADCE1 bit of the ADSCM00 or ADSCM10 register to 1 starts A/D conversion.
11.7.1 Operation in select mode
One analog input specified by the ADSCM00 or ADSCM10 register is A/D converted at a time and the result is
stored in the ADCR0m or ADCR1n register. Analog inputs correspond one-to-one with the ADCR0m or ADCR1n
register (m = 0 to 5, n = 0 to 7).
The A/D conversion end interrupt (INTAD0, INTAD1) is generated at the end of each A/D conversion, which
terminates A/D conversion (ADCS0, ADCS1 bit = 0).
Analog Input
A/D Conversion Result Register
ANIx ADCRx
Remark
x = 00 to 05, 10 to 17
To restart A/D conversion, write 1 in the ADCE0 or ADCE1 bit of the ADSCM00 or ADSCM10 register.
This is optimal for an application that reads a result for each A/D conversion.
Figure 11-6. Example of Select Mode (A/D Trigger Select) Operation (ANI02): For A/D Converter 0
ANI00
ANI01
ANI02
ANI03
ANI04
ANI05
ADCR00
ADCR01
ADCR02
ADCR03
ADCR04
ADCR05
A/D converter 0
ADSCM00
(1) ADCE0 bit of ADSCM00 = 1 (Enabled)
(2) A/D conversion of ANI02
(3) Store conversion result in ADCR02
(4) Generate INTAD0 interrupt
Содержание PD703114
Страница 2: ...2 User s Manual U15195EJ5V0UD MEMO ...