541
13.6.2
Contention between TCNT Write and Increment
If a timer counter clock pulse is generated during the T2 state of a TCNT write cycle, the write
takes priority and the counter is not incremented.
Figure 13-11 shows this operation.
ø
Address
TCNT address
Internal write signal
TCNT input clock
TCNT
N
M
T1
T2
TCNT write cycle by CPU
Counter write data
Figure 13-11 Contention between TCNT Write and Increment