RX24U CPU Card User's Manual
R12TU0018EJ0120
Page 17 of 26
2022.2.21
5.9
Reset Circuit
The product is equipped with a reset circuit for resetting the microcontroller at power-on reset and external reset. To
apply an external reset to the microcontroller, press the pushbutton (SW1).
5.10
Crystal Resonator
This product is mounted crystal oscillator (Y1) on 10MHz.
5.11
LEDs
Two LEDs are mounted on the product for use in debugging programs and general system applications. Each turns on
when the output on the corresponding port is low-level and turns off when the output is high-level. Table 5.12 lists the
pin assignments corresponding to the LEDs.
Table 5.12 RX24U CPU Card LED Connection Pin Assignments
Corresponding RX24U Port
LED1
LED2
PA2
High-level output
Off
⎯
Low-level output
On
⎯
PA1
High-level output
⎯
Off
Low-level output
⎯
On
5.12
JP1, JP2
JP1 and JP2 should be short-circuited between 2-3Pin.
Table 5.13 Jumper JP1 and JP2 configuration
JP1, JP2 configuration
Function
JP1
JP2
Open
Setting Prohibited
Setting Prohibited
1pin to 2pin short-circuited
Connect MCU (PGAVSS0 pin) to
CNC (1 pin)
Connect MCU (PGAVSS1 pin) to
CNB (4 pin)
2pin to 3pin short-circuited
( At the time of shipment)
Connect MCU (PGAVSS0 pin) to
GND
Connect MCU (PGAVSS1 pin) to
GND