Contention Between Tcnt Word Write And Increment - Hitachi SH7032 Hardware Manual

10.6.2

Contention between TCNT Word Write and Increment

If an increment pulse occurs in the T3 state of a TCNT word write cycle, writing takes priority and
TCNT is not incremented. The timing is shown in figure 10.59.
Internal write signal
TCNT input clock
Figure 10.59 Contention between TCNT Word Write and Increment
TCNT word write cycle by CPU
T1
CK
Address
TCNT
T2 T3
TCNT address
N
TCNT write data
M
291