Clock Input Pins; Features Of Pins - Renesas R-IN32M3 Series User Manual

R-IN32M3 Series: Board design edition
3.

Clock Input Pins

3.1

Features of Pins

The following table shows the pin functions for clock supply to the device.
Pin Name I/O
XT1 IN
XT2 IN/OUT
OSCTH IN
R18UZ0021EJ0400
Dec. 28, 2018
・External resonator connection pin.
・When external clock input mode is used (OSCTH = 1), set XT1 to the low level.
・External resonator connection pins.
・When "OSCTH = 0", this pin is the output.
・When external clock input mode is used (OSCTH = 1), input the clock from an external
oscillator to XT2.
・Selects the clock oscillation source to be connected to the clock pin.
Low level: XT1 and XT2 are to be connected to a resonator.
High level: XT2 is to be connected to an oscillator.
Features
3. Clock Input Pins
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