Datasheet

Section 10 I/O Ports
Rev. 3.00 Mar 17, 2006 page 452 of 926
REJ09B0283-0300
• P21/PO1/TIOCB3/IRQ9
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 IOB3 to IOB0 in TIOR3H, and bits CCLR2
to CCLR0 in TCR3), bit NDER1 in NDERL, bit P21DDR, and bit ITS9 in ITSR.
TPU channel 3
settings
(1) in table
below
(2) in table below
P21DDR — 0 1 1
NDER1 — — 0 1
P21 input P21 output PO1 outputTIOCB3 output
TIOCB3 input
*
1
Pin function
IRQ9 interrupt input
*
2
Notes: 1. TIOCB3 input when MD3 to MD0 = B'0000 and IOB3 to IOB0 = B'10xx.
2. IRQ9 input when ITS9 = 1.
TPU channel 3
settings
(2) (1) (2) (2) (1) (2)
MD3 to MD0 B'0000 B'0010 B'0011
IOB3 to IOB0 B'0000
B'0100
B'1xxx
B'0001 to B'0011
B'0101 to B'0111
— B'xx00 Other than B'xx00
CCLR2 to
CCLR0
— — — — Other
than
B'010
B'010
Output function — Output compare
output
——PWM
mode 2
output
—
x: Don’t care