Renesas SH7641 - Manual (Page 679)

Section 18 Multi-Function Timer Pulse Unit (MTU)
Rev. 4.00 Sep. 14, 2005 Page 629 of 982
REJ09B0023-0400
18.7.5 Conflict between TCNT Write and Increment Operations
If incrementing occurs in the T2 state of a TCNT write cycle, the TCNT write takes precedence
and TCNT is not incremented.
Figure 18.72 shows the timing in this case.
TCNT input
clock
Write signal
Address
P φ
TCNT address
TCNT
TCNT write cycle
T1 T2
N M
TCNT write data
Figure 18.72 Conflict between TCNT Write and Increment Operations