Renesas H8S/2319 series Hardware Manual page 267

Pin Selection Method and Pin Functions
P24/TIOCA4/ This pin is used as the 8-bit timer counter reset pin when bits CCLR1 and
TMRI1 CCLR0 in TCR1 are both set to 1.
The pin function is switched as shown below according to the combination of
the TPU channel 4 setting by bits MD3 to MD0 in TMDR4, bits IOA3 to IOA0 in
TIOR4, bits CCLR1 and CCLR0 in TCR4, and bit P24DDR.
TPU Channel
4 Setting
P24DDR
Pin function
TPU Channel
4 Setting
MD3 to MD0
IOA3 to IOA0
CCLR1,
CCLR0
Output
function
Notes: 1. TIOCA4 input when MD3 to MD0 = B'0000 or B'01×× and IOA3 to
Table Below (1)
TIOCA4 output
(2)
B'0000, B'01××
B'0000 B'0001 to
B'0011
B'0100
B'0101 to
B'1×××
B'0111
—
Output
—
compare
output
IOA0 = B'10××.
2. TIOCB4 output is disabled.
—
P24 input
TMRI1 input
(1) (2) (1)
B'001× B'0010
B'××00
— —
PWM
—
mode 1
output *
Rev. 5.00, 12/03, page 237 of 1088
Table Below (2)
0 1
P24 output
1
TIOCA4 input *
(1) (2)
B'0011
Other than B'××00
— Other B'01
than B'01
PWM
—
mode 2
2
output
×: Don't care