Datasheet

Section 10 I/O Ports
Rev. 3.00 Mar 17, 2006 page 453 of 926
REJ09B0283-0300
• P20/PO0/TIOCA3/IRQ8
The pin function is switched as shown below according to the combination of the TPU channel
3 settings (by bits MD3 to MD0 in TMDR3, bits IOA3 to IOA0 in TIOR3H, and bits CCLR2
to CCLR0 in TCR3), bit NDER0 in NDERL, bit P20DDR, and bit ITS8 in ITSR.
TPU channel 3
settings
(1) in table
below
(2) in table below
P20DDR — 0 1 1
NDER0 — — 0 1
P20 input P20 output PO0 outputTIOCA3 output
TIOCA3 input
*
1
Pin function
IRQ8 interrupt input
*
2
Notes: 1. TIOCA3 input when MD3 to MD0 = B'0000 and IOA3 to IOA0 = B'10xx.
2. IRQ8 input when ITS8 = 1.
TPU channel 3
settings
(2) (1) (2) (1) (1) (2)
MD3 to MD0 B'0000 B'001x B'0010 B'0011
IOA3 to IOA0 B'0000
B'0100
B'1xxx
B'0001 to B'0011
B'0101 to B'0111
B'xx00 Other
than
B'xx00
Other than B'xx00
CCLR2 to
CCLR0
— — — — Other
than
B'001
B'001
Output function — Output compare
output
—PWM
*
3
mode 1
output
PWM
mode 2
output
—
x: Don’t care
Note: 3. TIOCB3 output disabled.