The following definitions are used throughout the documentation:

Table 1. Timer/Counter Definitions
Name Description
BOTTOM The counter reaches BOTTOM when it becomes 0x0000
MAX The counter reaches the maximum when it becomes 0xFFFF
TOP The counter reaches TOP when it becomes equal to the highest value in the count sequence
CNT Count (TCBn.CNT) register value
CCMP Capture/Compare (TCBn.CCMP) register value
Note: In general, the term ‘timer’ is used when the timer/counter is counting periodic clock ticks. The term ‘counter’ is used when the input signal has sporadic or irregular ticks.