Timer/Counter Size

Each TCC has a counter size of either 16- or 24-bits. The size of the counter determines the maximum value it can count to before an overflow occurs. Table 1 shows the maximum values for each of the possible counter sizes.

Table 1. Timer Counter Sizes and Their Maximum Count Values
Counter size	Max. (hexadecimal)	Max. (decimal)
16-bit	0xFFFF	65,535
24-bit	0xFFFFFF	16,777,215

The period/top value of the counter can be set, to define counting period. This will allow the counter to overflow when the counter value reaches the period/top value.