Contention between Buffer Register Write and Input Capture: If a buffer register is used for
input capture buffering and an input capture signal occurs in the T
3
state of a write cycle, input
capture takes priority and the write to the buffer register is not performed.
See figure 10-69.
Figure 10-69 Contention between Buffer Register Write and Input Capture
ø
Address bus
Internal write signal
Input capture signal
GR
BR
BR address
Buffer register write cycle
T
1
T
2
T
3
N
X
M
N
TCNT value
388
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