Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 741 of 1823
Jul 31, 2019
RX23W Group 26. 8-Bit Timer (TMR)
26.4 Operation Timing
26.4.1 TCNT Count Timing
Figure 26.5 shows the count timing of TCNT for internal clock. Figure 26.6 shows the count timing of TCNT for
external clock.
Note that the external clock pulse width must be at least 1.5 PCLK cycles for increment at a single edge, and at least 2.5
PCLK cycles for increment at both edges. The counter will not increment correctly if the pulse width is less than these
values.
Figure 26.5 Count Timing for Internal Clock
Figure 26.6 Count Timing for External Clock (at Both Edges)
Internal clock
TCNT count clock
TCNT
PCLK
N – 1
N
N + 1
TMCIn pin
TCNT count clock
TCNT
PCLK
N – 1 N N + 1

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English