Advertisement
(c)
Single-Chip Mode
Port 6 pins can operate as the PWMX output, SCIF and SSU control input/output, interrupt input,
or general I/O port pins. The relationship between register setting values and pin functions are as
follows.
• P67/ExIRQ8/SSCK
The pin function is switched as shown below according to the SCKS bit in SSCRH of the SSU
and the P67DDR bit. When the ISS8 bit in ISSR16 is set to 1, this pin can be used as the
ExIRQ8 input pin. To use as the ExIRQ8 input pin, clear the P67DDR bit to 0.
SCKS
P67DDR
Pin function
ExIRQ8 input pin
[Legend] X: Don't care.
• P66/ExIRQ9/SCS
The pin function is switched as shown below according to the CSS1 and CSS0 bits in SSCRH
of the SSU and the P66DDR bit. When the ISS9 bit in ISSR16 is set to 1, this pin can be used
as the ExIRQ9 input pin. To use as the ExIRQ9 input pin, clear the P66DDR bit to 0.
CSS1, CSS0
P66DDR
Pin function
ExIRQ9 input pin
[Legend] X: Don't care.
0
0
P67 input pin
00
0
P66 input pin
1
P67 output pin
1
P66 output pin
Rev. 1.00 Mar. 12, 2008 Page 305 of 1178
Section 8 I/O Ports
1
X
SSCK I/O pin
01 or 1X
X
SCS I/O pin
REJ09B0403-0100
Advertisement
