187
Bit 7: Auto-reload function select (TMC7)
Bit 7 selects whether timer C is used as an interval timer or auto-reload timer.
Bit 7
TMC7
Description
0
Interval timer function selected
(initial value)
1
Auto-reload function selected
Bits 6 and 5: Counter up/down control (TMC6, TMC5)
Selects whether TCC up/down control is performed by hardware using UD pin input, or whether
TCC functions as an up-counter or a down-counter.
Bit 6
TMC6
Bit 5
TMC5
Description
0
0
TCC is an up-counter
(initial value)
0
1
TCC is a down-counter
1
*
Hardware control by UD pin input
UD pin input high: Down-counter
UD pin input low: Up-counter
*
: Don’t care
Bits 4 and 3: Reserved bits
Bits 4 and 3 are reserved; they are always read as 1 and cannot be modified.