R8C/13 Group
15. Programmable I/O Ports
Table 15.20 Port P33/INT3/TCIN Setting
Register
Bit
PD3 PUR0
PD3_3 PU06
Function
0
0
0
1
0
1
0
X
Input port (not pulled up)
Input port (pulled up)
TCIN/INT3 input
Setting value
Output port
X: “0” or “1”
Table 15.21 Port P37/TXD10/RXD1 Setting
Register
Bit
PD3 PUR0 UCON
U1MR
U1C0
Function
PD3_7 PU07 TXD1EN SMD2, SMD0 NCH
0
0
0
1
X
X
002
002
1X
X1
002
1X
X1
1X
X1
X
X
Input port (not pulled up)
Input port (pulled up)
0
1
0
0
X
X
RXD1
Setting value
X
X
Output port
X
X
X
X
1
1
0
1
TXD0 output, CMOS output
TXD10 output, N-channel open output
X: “0” or “1”
_______
Table 15.22 Port P45/INT0 Setting
Register
Bit
PD4 PUR1 INTEN
PD4_5 PU11 INT0EN
Function
0
0
0
1
0
1
0
X
0
0
1
X
Input port (not pulled up)
Input port (pulled up)
_______
Setting value
INT0 input
Output port
X: “0” or “1”
Table 15.23 Port XIN/P46, XOUT/P47 Setting
Register
CM1 CM1 CM0
Circuit specification
Oscillation Feedback
Function
Bit
CM13 CM10 CM05
buffer
OFF
resistance
OFF
1
1
1
0
1
1
XIN-XOUT oscillatoin stop
External input to XIN pin, “H” output from
XOUT pin
OFF
ON
Setting value
1
1
0
0
0
X
1
0
X
OFF
ON
ON
ON
XIN-XOUT oscillatoin stop
XIN-XOUT oscillatoin
Input port
OFF
OFF
X: “0” or “1”
Rev.1.20 Jan 27, 2006 page 150 of 205
REJ09B0111-0120
RENESAS [ RENESAS TECHNOLOGY CORP ]
