Datasheet

Section 9 I/O Ports
Rev.6.00 Sep. 27, 2007 Page 370 of 1268
REJ09B0220-0600
Pin Selection Method and Pin Functions
P2
3
/PO
3
/TIOCD
3
/
TMCI
0
This pin is used as the 8-bit timer external clock input pin when an external
clock is selected with bits CKS2 to CKS0 in TCR0.
The pin function is switched as shown below according to the combination of
the TPU channel 3 setting (by bits MD3 to MD0 in TMDR3, bits IOD3 to IOD0
in TIOR3L, and bits CCLR2 to CCLR0 in TCR3), bit NDER3 in NDERL, and bit
P23DDR.
TPU Channel
3 Setting Table Below (1) Table Below (2)
P23DDR — 0 1 1
NDER3 — — 0 1
Pin function TIOCD
3
output P2
3
input
P2
3
output
PO
3
output
TIOCD
3
input
*
TMCI
0
input
Note: * TIOCD
3
input when MD3 to MD0 = B'0000, and IOD3 to IOD0 = B'10xx.
TPU Channel
3 Setting (2) (1) (2) (2) (1) (2)
MD3 to MD0 B'0000 B'0010 B'0011
IOD3 to IOD0 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'110
B'110
Output
function
— Output
compare
output
— — PWM
mode 2
output
—
x: Don’t care