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RL78/G22 Fast Prototyping Board
Table 5-7
Pin Assignments of the MCU Headers (J3)
Part No. in
Name of
the Circuit
Arduino
Schematics
Signal*
1
J3-1
A1
J3-2
A2
J3-3
A3
J3-4
A4
J3-5
A5
J3-6
26
J3-7
27
J3-8
REF
J3-9
28
J3-10
0/RxD
J3-11
1/TxD
J3-12
2
Notes: 1. The names of the Arduino
be supported in the future.
2. When the pin is to be used as a port pin, short-circuit the short-circuit pads [P26], [P25], [P24], [P23], and
[P22].
3. P21 is connected to GND by default. Ensure that the port pin is not set as an output. When P21 is to be
disconnected from GND, cut the given pattern for cutting [AVREFM].
4. P20 is connected to VDD by default. Ensure that the port pin is not set as an output. When P20 is to be
disconnected from VDD, cut the given pattern for cutting [AVREFP].
R20UT5121EJ0100 Rev. 1.00
Nov.16.22
Pin
Power
Port and Peripheral Modules
Supply
25
-
P27/ANI7/TS25
(26)
-
P26/ANI6/TS24
(27)
-
P25/ANI5/TS23
(28)
-
P24/ANI4/TS22
(29)
-
P23/ANI3/TS21
(30)
-
P22/ANI2/TS20
31
-
P21/ANI1/AVREFM
32
-
P20/ANI0/AVREFP
33
-
P130/TS19
34
-
P01/TS27/TO00/RxD1
35
-
P00/TS26/TI00/TxD1
36
-
P140/PCLBUZ0/INTP6/TS08
signals correspond to the pin numbers for the Arduino
RL78/G22
*2
*2
*2
*2
*2
*3
*4
5. User Circuits
Others
-
CAP1 (Touch Button 1)
CAP2 (Touch Button 2)
CAP5 (Touch Slider)
CAP4 (Touch Slider)
CAP3 (Touch Slider)
-
-
-
-
-
-
IDE. The Arduino
IDE will
Page 16 of 35
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