Datasheet

Section 8 I/O Ports
Rev.7.00 Feb. 14, 2007 page 241 of 1108
REJ09B0089-0700
Pin Selection Method and Pin Functions
P24/TIOCA4/
TMRI1
This pin is used as the 8-bit timer counter reset pin when bits CCLR1 and
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 Table Below (1) Table Below (2)
P24DDR — 0 1
Pin function TIOCA4 output P24 input P24 output
TIOCA4 input
*
1
TMRI1 input
TPU Channel
4 Setting (2) (1) (2) (1) (1) (2)
MD3 to MD0 B'0000, B'01×× B'001× B'0010 B'0011
IOA3 to IOA0 B'0000
B'0100
B'1×××
B'0001 to
B'0011
B'0101 to
B'0111
B'××00 Other than B'××00
CCLR1,
CCLR0
— — — — Other
than B'01
B'01
Output
function
— Output
compare
output
— PWM
mode 1
output
*
2
PWM
mode 2
output
—
×: Don’t care
Notes: 1. TIOCA4 input when MD3 to MD0 = B'0000 or B'01×× and IOA3 to
IOA0 = B'10××.
2. TIOCB4 output is disabled.