Renesas rl78 User Manual
RL78/G1A
CHAPTER 11 A/D CONVERTER
R01UH0305EJ0200 Rev.2.00
365
Jul 04, 2013
Figure 11-11. Format of Analog Input Channel Specification Register (ADS) (2/2)
Address: FFF31H After reset: 00H R/W
Symbol
7 6 5 4 3 2 1 0
ADS
ADISS 0
0
ADS4 ADS3 ADS2 ADS1 ADS0
{ Scan mode (ADMD = 1)
Analog input channel
ADISS ADS4 ADS3 ADS2 ADS1 ADS0
Scan 0
Scan 1
Scan 2
Scan 3
0 0 0 0 0 0
ANI0
ANI1
ANI2
ANI3
0 0 0 0 0 1
ANI1
ANI2
ANI3
ANI4
0 0 0 0 1 0
ANI2
ANI3
ANI4
ANI5
0 0 0 0 1 1
ANI3
ANI4
ANI5
ANI6
0 0 0 1 0 0
ANI4
ANI5
ANI6
ANI7
0 0 0 1 0 1
ANI5
ANI6
ANI7
ANI8
0 0 0 1 1 0
ANI6
ANI7
ANI8
ANI9
0 0 0 1 1 1
ANI7
ANI8
ANI9
ANI10
0 0 1 0 0 0
ANI8
ANI9
ANI10
ANI11
0 0 1 0 0 1
ANI9
ANI10
ANI11
ANI12
0 1 0 0 0 0
ANI16
ANI17
ANI18
ANI19
0 1 0 0 0 1
ANI17
ANI18
ANI19
ANI20
0 1 0 0 1 0
ANI18
ANI19
ANI20
ANI21
0 1 0 0 1 1
ANI19
ANI20
ANI21
ANI22
0 1 0 1 0 0
ANI20
ANI21
ANI22
ANI23
0 1 0 1 0 1
ANI21
ANI22
ANI23
ANI24
0 1 0 1 1 0
ANI22
ANI23
ANI24
ANI25
0 1 0 1 1 1
ANI23
ANI24
ANI25
ANI26
0 1 1 0 0 0
ANI24
ANI25
ANI26
ANI27
0 1 1 0 0 1
ANI25
ANI26
ANI27
ANI28
0 1 1 0 1 0
ANI26
ANI27
ANI28
ANI29
0 1 1 0 1 1
ANI27
ANI28
ANI29
ANI30
Other than above
Setting prohibited
Cautions 1. Be sure to clear bits 5 and 6 to 0.
2 Set a channel to be set the analog input by ADPC and PMCx registers in the input mode by using
port mode registers0 to 5, 7, 12, or 15 (PM0 to PM5, PM7, PM12, PM15).
3. Do not set the pin that is set by the A/D port configuration register (ADPC) as digital I/O by the
ADS register.
4. Do not set the pin that is set by port mode control register 0, 1, 3 to 5, 7, or 12 (PMC0, PMC1,
PMC3 to PMC5, PMC7, PMC12) as digital I/O by the ADS register.
5. Rewrite the value of the ADISS bit while conversion operation is stopped (ADCS = 0, ADCE = 0).
6. If using AV
REFP
as the + side reference voltage of the A/D converter, do not select ANI0 as an A/D
conversion channel.
7.
If
using
AV
REFM
as the
− side reference voltage of the A/D converter, do not select ANI1 as an A/D
conversion channel.
8. If ADISS is set to 1, the internal reference voltage (1.45 V) cannot be used for the + side reference
voltage. Also, after setting the ADISS to 1, the result of the first conversion cannot be used. For
details about the setting flow, see 11.7.4 Setup when temperature sensor output voltage/internal
reference voltage is selected (example for software trigger mode and one-shot conversion mode).
details about the setting flow, see 11.7.4 Setup when temperature sensor output voltage/internal
reference voltage is selected (example for software trigger mode and one-shot conversion mode).
9. Do not set the ADISS bit to 1 when shifting to STOP mode, or to HALT mode while the CPU is
operating on the subsystem clock. When the ADISS bit is set to 1, the current value of the
temperature sensor operating current (I
temperature sensor operating current (I
TMPS
) and A/D converter reference voltage current (I
ADREF
)
indicated in 29.3.2 or 30.3.2 Supply current characteristics will be added.
10.
Ignore the conversion result if the corresponding ANI pin does not exist depending on the
product (number of pins).
product (number of pins).
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