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R8C23 Datasheet(PDF) 71 Page - Renesas Technology Corp |
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R8C23 Datasheet(HTML) 71 Page - Renesas Technology Corp |
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71 / 549 page  R8C/22 Group, R8C/23 Group 7. Programmable I/O Ports Rev.2.00 Aug 20, 2008 Page 51 of 501 REJ09B0251-0200 Figure 7.5 Configuration of Programmable I/O Ports (5) P4_5 INT0 and input to each peripheral function Port latch Data bus Pull-up selection Digital filter P4_6/XIN Data bus Clocked inverter(2) P4_7/XOUT Data bus (3) NOTES: 1. symbolizes a parasitic diode. Ensure the input voltage on each port will not exceed VCC. 2. When CM05 = 1, CM10 = 1, or CM13 = 0, the clocked inverter is cutoff. 3. When CM10 = 1 or CM13 = 0, the feedback resistor is unconnected. 4. When CM05 = CM13 = 1 or CM10 = CM13 = 1, this pin is pulled up. (4) Direction register (1) (1) (1) (1) (1) (1) |
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