Renesas H8S/2319 series Hardware Manual page 271

Pin Selection Method and Pin Functions
P20/TIOCA3 The pin function is switched as shown below according to the combination of
the TPU channel 3 setting by bits MD3 to MD0 in TMDR3, bits IOA3 to IOA0 in
TIOR3H, bits CCLR2 to CCLR0 in TCR3, and bit P20DDR.
TPU Channel
3 Setting
P20DDR
Pin function
TPU Channel
3 Setting
MD3 to MD0
IOA3 to IOA0
CCLR2 to
CCLR0
Output
function
Notes: 1. TIOCA3 input when MD3 to MD0 = B'0000 and IOA3 to IOA0 =
Table Below (1)
TIOCA3 output
(2)
B'0000
B'0000 B'0001 to
B'0011
B'0100
B'0101 to
B'1×××
B'0111
—
— Output
compare
output
B'10××.
2. TIOCB3 output is disabled.
—
P20 input
(1) (2) (1)
B'001× B'0010
B'××00
— —
— PWM
mode 1
output *
Rev. 5.00, 12/03, page 241 of 1088
Table Below (2)
0 1
P20 output
1
TIOCA3 input *
(1) (2)
B'0011
Other than B'××00
— Other B'001
than
B'001
PWM —
mode 2
2
output
×: Don't care