R01UH0823EJ0100 Rev.1.00
Page 723 of 1823
Jul 31, 2019
RX23W Group
25. 16-Bit Timer Pulse Unit (TPUa)
25.9.15
Continuous Output of Compare-Match Pulse Interrupt Signal
When TGR is set to 0000h, PCLK/1 is set as the count clock, and compare match is set as the counter clear source, the
TCNT remains 0000h and is not updated, and a compare-match pulse interrupt signal is output continuously to form a
flat signal level.
When a pulse interrupt signal is used, the interrupt controller cannot detect the second and subsequent interrupts.
shows an operation timing when the compare-match pulse interrupt signal is continuously output.
Figure 25.53
Continuous Output of Compare-Match Pulse Interrupt Signal
Write to the timer start register by the CPU
PCLK
TSTR.CST
TCNT
TGR
0000h
0000h
Counter clear signal
Compare match signal
Compare-match pulse
interrupt signal