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RL78/G22 Fast Prototyping Board
Table 5-2
Pin Assignments of the Arduino
Part No. in
Name of
the Circuit
Arduino
Schematics
Signal*
1
J7-1
RX/0
J7-2
TX/1
J7-3
2
J7-4
~3
J7-5
4
J7-6
~5
J7-7
~6
J7-8
7
J8-1
8
J8-2
~9
J8-3
~10
J8-4
~11
J8-5
12
J8-6
13
J8-7
GND
J8-8
ADREF
J8-9
SDA
J8-10
SCL
Notes: 1. The names of the signals correspond to the pin numbers for the Arduino
supported in the future.
2. P20 is connected to VDD by default. When P20 is disconnected from VDD, cut the given pattern for cutting
[AVREFP].
R20UT5121EJ0100 Rev. 1.00
Nov.16.22
Connectors (2/2)
Pin
Power
Supply
34
-
35
-
36
-
5
-
37
-
38
-
22
-
23
-
12
-
15
-
16
-
19
-
18
-
17
-
-
VSS
32
-
2
-
1
-
RL78/G22
Port
Analog
P01
-
P00
-
P140/INTP6
-
P31
-
P120
-
P41
-
P10
-
P146
-
P30
-
P17
-
P16
-
P13
-
P14
-
P15
-
GND
-
P20*
2
AVREFP
P61
-
P60
-
IDE. The Arduino
5. User Circuits
PWM
Serial
-
RxD1
-
TxD1
-
-
TO03
-
-
-
TO07
-
-
-
-
-
-
-
TO02
-
TO01
-
-
SO20
-
SI20
-
SCK20
-
-
-
-
-
SDAA0
-
SCLA0
IDE will be
Page 11 of 35
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