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(7) Specifying alternate-function pins of port 3
PFC35
PFCE34
PFCE33
PFC32
Note The ASCK0 and ADTRG pins are alternate-function pins. When using the pin as the ASCK0 pin, disable
the trigger input of the alternate-function ADTRG pin (clear the ADS.TRG bit to 0 or set the ADS.ADTMD bit
to 1). When using the pin as the ADTRG pin, do not set the UART0 operation clock to external input (set
the CKSR0.TPS03 to CKSR0.TPS00 bits to other than 1011).
Caution When the P3n pin is specified as an alternate function by the PMC3.PMC3n bit with the PFC3n
and PFCE3n bits maintaining the initial value (0), output becomes undefined. Therefore, to
specify the P3n pin as an alternate function, set the PFC3n and PFCE3n bits to 1 first and then
set the PMC3n bit to 1 (n = 3, 4).
(8) Pull-up resistor option register 3 (PU3)
After reset: 00H
PU3
PU3n
Caution An on-chip pull-up resistor can be provided for P38 and P39 by a mask option
84
CHAPTER 4 PORT FUNCTIONS
Specification of Alternate-Function Pin of P35 Pin
0
TI010 input
1
TO01 output
PFC34
Specification of Alternate-Function Pin of P34 Pin
0
0
Setting prohibited
0
1
Setting prohibited
1
0
TIP01 input
1
1
TOP01 output
PFC33
Specification of Alternate-Function Pin of P33 Pin
0
0
Setting prohibited
0
1
Setting prohibited
1
0
TIP00 input
1
1
TOP00 output
Specification of Alternate-Function Pin of P32 Pin
Note
0
ASCK0/ADTRG
input
1
TO01 output
R/W
Address: FFFFFC46H
0
0
PU35
PU34
Control of on-chip pull-up resistor connection (n = 0 to 5)
0
Not connected
1
Connected
μ
(only in the
PD703302, 703302Y).
User's Manual U16896EJ2V0UD
PU33
PU32
PU31
PU30
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