Datasheet

Section 10 I/O Ports
Rev.7.00 Mar. 18, 2009 page 481 of 1136
REJ09B0109-0700
• 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 TMDR_3, bits IOA3 to IOA0 in TIORH_3, and bits
CCLR2 to CCLR0 in TCR_3), 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 output Pin function TIOCA3 output
TIOCA3 input
*
1
IRQ8 interrupt input
*
2
TPU channel 3
settings
(2) (1) (2) (1) (1) (2)
MD3 to MD0 B'0000 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
Other than B'××00
CCLR2 to
CCLR0
⎯ ⎯ ⎯ ⎯ Other
than
B'001
B'001
Output function ⎯ Output
compare
output
⎯ PWM
*
3
mode 1
output
PWM mode
2 output
⎯
Legend:
×: Don’t care
Notes: 1. TIOCA3 input when MD3 to MD0 = B'0000 and IOA3 to IOA0 = B'10××.
2. IRQ8 input when ITS8 = 1.
3. TIOCB3 output disabled.