RX66T CPU Card User’s Manual
R12UZ0029EJ0120
Page 17 of 25
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 8MHz.
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 5.13 lists the
pin assignments corresponding to the LEDs.
Table 5.13 RX66T CPU Card LED Connection Pin Assignments
Corresponding RX66T Port
LED1
LED2
PE3
High-level output
Off
-
Low-level output
On
-
PB7
High-level output
-
Off
Low-level output
-
On
5.12
JP1, JP2
JP1 and JP2 should be short-circuited between 2-3Pin.
Table 5.14 Jumper JP1 and JP2 configuration
JP1, JP2 configuration
Function
JP1
JP2
Open
Connect MCU (PGAVSS0 pin) to
CNC (1 pin)
Connect MCU (PGAVSS1 pin) to
CNB (4 pin)
Short
( At the time of shipment)
Connect MCU (PGAVSS0 pin) to
GND
Connect MCU (PGAVSS1 pin) to
GND
