
R8C/14 Group, R8C/15 Group 17. Programmable I/O Ports
Rev.2.10 Jan 19, 2006 Page 182 of 253
REJ09B0164-0210
Figure 17.3 Configuration of Programmable I/O Ports (3)
P4_5
Input to each peripheral function
Port Latch
Direction
Register
Data Bus
Pull-Up Selection
Digital
Filter
P4_6/XIN
Data Bus
Clocked Inverter
(1)
P4_7/XOUT
Data Bus
(Note 2)
(Note 3)
NOTES:
1. When CM05=1, CM10=1, or CM13=0, the clocked inverter is cutoff.
2. When CM10=1 or CM13=0, the feedback resistor is unconnected.
3. When CM05=CM13=1 or CM10=CM13=1, this pin is pulled up.
4. symbolizes a parasitic diode.
Ensure the input voltage on each port will not exceed VCC.
(Note 4)
(Note 4)
(Note 4)
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