Pin
Selection Method and Pin Functions
P21/TIOCB3
Switches as follows according to the combinations of the TPU channel 3
setting made using bits MD3 to MD0 of TMDR3, bits IOB3 to IOB0 of TIOR3L,
and bits CCR2 to CCR0 of TCR3, as well as the P21DDR bit.
TPU Channel
3 Setting
P21DDR
Pin function
TPU Channel
3 Setting
MD3 to MD0
IOB3 to IOB0
CCLR2 to
CCLR0
Output
function
240
Table Below (1)
—
TIOCB3 output
(2)
(1)
B'0000
B'0000
B'0001 to
B'0011
B'0100
B'0101 to
B'1xxx
B'0111
—
—
—
Output
compare
output
Table Below (2)
0
P21 input
TIOCB3 input
(2)
(2)
B'0010
B'0011
—
B'xx00
Other than B'xx00
—
—
—
—
mode 2
1
P21 output
(1)
(2)
Other
B'010
than
B'010
PWM
—
output