Renesas rl78 User Manual
RL78/G1A
CHAPTER 4 PORT FUNCTIONS
R01UH0305EJ0200 Rev.2.00
111
Jul 04, 2013
4.3.7 A/D port configuration register (ADPC)
This register switches the P20/ANI0 to P27/ANI7, and P150/ANI8 to P154/ANI12 pins to digital I/O of port or analog
input of A/D converter.
The ADPC register can be set by an 8-bit memory manipulation instruction.
Reset signal generation sets this register to 00H.
Figure 4-7. Format of A/D Port Configuration Register (ADPC)
Address: F0076H After reset: 00H R/W
Symbol
7 6 5 4 3 2 1 0
ADPC 0
0
0
0
ADPC3 ADPC2 ADPC1 ADPC0
Analog input (A)/digital I/O (D) switching
ADPC3
ADPC2
ADPC1
ADPC0
ANI12/
P154
ANI11/
P153
ANI10/
P152
ANI9/
P
151
ANI8/
P
150
ANI7/
P
27
ANI6/
P
26
ANI5/
P
25
ANI4/
P
24
ANI3/
P
23
ANI2/
P
22
ANI1/
P
21
ANI0/
P
20
0
0
0
0 A A A A A A A A A A A A A
0
0
0
1 D D D D D D D D D D D D D
0
0
1
0 D D D D D D D D D D D D A
0
0
1
1 D D D D D D D D D D D A A
0
1
0
0 D D D D D D D D D D A A A
0
1
0
1 D D D D D D D D D A A A A
0
1
1
0 D D D D D D D D A A A A A
0
1
1
1 D D D D D D D A A A A A A
1
0
0
0 D D D D D D A A A A A A A
1
0
0
1 D D D D D A A A A A A A A
1
0
1
0 D D D D A A A A A A A A A
1
0
1
1 D D D A A A A A A A A A A
1
1
0
0 D D A A A A A A A A A A A
1
1
0
1 D A A A A A A A A A A A A
1
1
1
0 A A A A A A A A A A A A A
1
1
1
1 A A A A A A A A A A A A A
Cautions 1. Set the port to analog input by ADPC register to the input mode by using port mode registers 2,
15 (PM2, PM15).
2. Do not set the pin set by the ADPC register as digital I/O by the analog input channel
specification register (ADS).
3.
When
using
AV
REFP
and AV
REFM
, set ANI0 and ANI1 to analog input and set the port mode
register to the input mode.
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