HD64F2168 Datasheet, PDF (254/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

8.7.2 Pin Functions
Each pin of port 7 can also be used as the interrupt input pins (ExIRQ2 to ExIRQ7), analog input
pin of the A/D converter (AN0 to AN7), and analog output pin (DA0, DA1) of the D/A converter.
By setting the ISS bit of the ISSR to 1, the pins can also be used as the interrupt input pin
(ExIRQ2 to ExIRQ7).
When the interrupt input pin is set, do not use the pins for the A/D or D/A converter.
• P77/ExIRQ7/AN7/DA1
The port 7 function changes as shown in the following table, depending on the combination of
the CH2 to CH0 bits of ADCSR of the A/D converter, the DAOE1 bit of DACR of the D/A
converter, and the ISS7 bit of ISSR of the interrupt controller. Do not set these bits to other
values than those shown in the following table.
CH2 to CH0
DAOE1
ISS7
Pin function
B'111
0
0
AN7 input pin
Other than B'111
0
0
P77 input pin
1
ExIRQ7 input pin
1
0
DA1 output pin
• P76/ExIRQ6/AN6/DA0
The port 7 function changes as shown in the following table, depending on the combination of
the SCAN bit and the CH2 to CH0 bits of ADCSR of the A/D converter, the DAOE0 bit of
DACR of the D/A converter, and the ISS6 bit of ISSR of the interrupt controller. Do not set
these bits to other values than those shown in the following table.
SCAN
0
CH2 to CH0
B'110
Other than B'110
DAOE0
0
0
1
ISS6
Pin function
0
AN6
input
pin
0
1
P76 ExIRQ6
input pin input pin
0
DA0
output
pin
[Legend]
*:
Don’t care
1
B'11*
Other than B'11*
0
0
1
0
0
1
AN6
P76 ExIRQ6
input pin input pin input pin
0
DA0
output
pin
Rev. 3.00, 03/04, page 214 of 830