R01UH0822EJ0100 Rev.1.00
Page 484 of 1041
Jul 31, 2019
RX13T Group
19. Multi-Function Timer Pulse Unit 3 (MTU3c)
19.6.4
Contention between TCNT Write and Clear Operations
If the counter clear signal is generated in the TCNT write cycle, TCNT clearing takes precedence and TCNT write
operation is not performed.
shows the timing in this case.
Figure 19.123
Contention between TCNT Write and Clear Operations
19.6.5
Contention between TCNT Write and Increment Operations
If incrementing occurs in a TCNT write cycle, TCNT write operation takes precedence and TCNT is not incremented.
shows the timing in this case.
Figure 19.124
Contention between TCNT Write and Increment Operations
Counter clear signal
TCNT
Written by CPU
N
0000h
PCLKB
TCNT count clock
TCNT
N
M
TCNT write data
Written by CPU
PCLKB