R01UH0823EJ0100 Rev.1.00 Page 1542 of 1823
Jul 31, 2019
RX23W Group 44. 12-Bit A/D Converter (S12ADE)
44.2.5 A/D Channel Select Register A1 (ADANSA1)
ADANSA1 selects analog input channels for A/D conversion among AN016 to AN020 and AN027. In group scan mode,
group A channels are to be selected.
ANSA1n Bit (n = 00 to 04, 11) (A/D Conversion Channel Select)
The ANSA1n bit (n = 00 to 04, 11) select analog input channels for A/D conversion among AN016 to AN020 and
AN027. The channels to be selected and the number of channels can be arbitrarily set. The ANSA100 bit corresponds to
AN016 and the ANSA111 bit corresponds to AN027.
When performing A/D conversion of the temperature sensor output or internal reference voltage, do not select analog
input channels. The setting value of this register should be 0000h.
When double trigger mode is selected, the channel selected by the ANSA1n bit is invalid, and the channel selected by the
ADCSR.DBLANS[4:0] bits is selected in group A instead.
The ANSA1n bit should be set while the ADCSR.ADST bit is 0.
Address(es): S12AD.ADANSA1 0008 9006h
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
————
ANSA1
11
——————
ANSA1
04
ANSA1
03
ANSA1
02
ANSA1
01
ANSA1
00
Value after reset:
0000000000000000
Bit Symbol Bit Name Description R/W
b0 ANSA100 A/D Conversion Channel Select 0: AN016 to AN020 are not subjected to conversion.
1: AN016 to AN020 are subjected to conversion.
R/W
b1 ANSA101 R/W
b2 ANSA102 R/W
b3 ANSA103 R/W
b4 ANSA104 R/W
b10 to b5 — Reserved These bits are read as 0. The write value should be 0. R/W
b11 ANSA111 A/D Conversion Channel Select 0: AN027 is not subjected to conversion.
1: AN027 is subjected to conversion.
R/W
b15 to b12 — Reserved These bits are read as 0. The write value should be 0. R/W
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