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R32C161 Datasheet(PDF) 10 Page - Renesas Technology Corp |
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R32C161 Datasheet(HTML) 10 Page - Renesas Technology Corp |
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10 / 108 page  REJ03B0241-0101 Rev.1.01 Dec 07, 2009 Page 10 of 105 R32C/161 Group 1. Overview 1.5 Pin Definitions and Functions Table 1.6 and Table 1.7 shows the pin definitions and functions. Table 1.6 Pin Definitions and Functions (1/2) Function Symbol I/O Description Power supply VCC, VSS I Applicable as follows: VCC = 3.0 to 5.5 V, VSS = 0 V Connecting pins for decoupling capacitor VDC0, VDC1 — A decoupling capacitor for internal voltage should be connected between VDC0 and VDC1 Analog power supply AVCC, AVSS I Power supply for the A/D converter. AVSS should be connected to VSS Reset input RESET I The MCU is reset when this pin is driven low CNVSS CNVSS I This pin should be connected to VSS via a resistor Debug port NSD I/O This pin is to communicate with a debugger. It should be connected to VCC via a resistor of 1 to 4.7 k Ω Main clock input XIN I Input/output for the main clock oscillator. A crystal, or a ceramic resonator should be connected between pins XIN and XOUT. An external clock should be input at the XIN while leaving the XOUT open Main clock output XOUT O Sub clock input XCIN I Input/output for the sub clock oscillator. A crystal oscillator should be connected between pins XCIN and XCOUT. An external clock should be input at the XCIN while leaving the XCOUT open Sub clock output XCOUT O Clock output CLKOUT O Output of the clock with the same frequency as fC, f8, or f32 External interrupt input INT0 to INT5 I Input for external interrupts NMI input P8_5/ NMI I Input for NMI I/O ports P0_0 to P0_7 P1_0 to P1_7 P2_0 to P2_7 P3_0 to P3_7 P4_0 to P4_7 P5_0 to P5_7 P6_5, P6_7 P7_0, P7_4 to P7_6 P8_2 to P8_4 P8_6, P8_7 P9_3 to P9_7 I/O I/O ports in CMOS. Each port can be programmed to input or output under the control of the direction register. Pull-up resistors are selected for following 4-pin units, but are enabled only for the input pins: Pi_0 to Pi_3 and Pi_4 to Pi_7 (i = 0 to 9) Input port P9_1 I Input port in CMOS. Pull-up resistors are selectable for P9_1 and P9_3 |
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