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PIC18LF4331 Datasheet(PDF) 16 Page - Microchip Technology |
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PIC18LF4331 Datasheet(HTML) 16 Page - Microchip Technology |
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16 / 392 page  PIC18F2331/2431/4331/4431 DS39616D-page 16 2010 Microchip Technology Inc. TABLE 1-2: PIC18F2331/2431 PINOUT I/O DESCRIPTIONS Pin Name Pin Number Pin Type Buffer Type Description SPDIP, SOIC QFN MCLR/VPP MCLR VPP 126 I P ST Master Clear (input) or programming voltage (input). Master Clear (Reset) input. This pin is an active-low Reset to the device. High-voltage ICSP™ programming enable pin. OSC1/CLKI/RA7 OSC1 CLKI RA7 96 I I I/O ST CMOS TTL Oscillator crystal or external clock input. Oscillator crystal input or external clock source input. ST buffer when configured in RC mode; CMOS otherwise. External clock source input. Always associated with pin function OSC1. (See related OSC1/CLKI, OSC2/CLKO pins.) General purpose I/O pin. OSC2/CLKO/RA6 OSC2 CLKO RA6 10 7 O O I/O — — TTL Oscillator crystal or clock output. Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator mode. In RC mode, OSC2 pin outputs CLKO, which has 1/4 the frequency of OSC1 and denotes the instruction cycle rate. General purpose I/O pin. PORTA is a bidirectional I/O port. RA0/AN0 RA0 AN0 227 I/O I TTL Analog Digital I/O. Analog Input 0. RA1/AN1 RA1 AN1 328 I/O I TTL Analog Digital I/O. Analog Input 1. RA2/AN2/VREF-/CAP1/INDX RA2 AN2 VREF- CAP1 INDX 41 I/O I I I I TTL Analog Analog ST ST Digital I/O. Analog Input 2. A/D reference voltage (low) input. Input Capture Pin 1. Quadrature Encoder Interface index input pin. RA3/AN3/VREF+/CAP2/QEA RA3 AN3 VREF+ CAP2 QEA 52 I/O I I I I TTL Analog Analog ST ST Digital I/O. Analog Input 3. A/D reference voltage (high) input. Input Capture Pin 2. Quadrature Encoder Interface Channel A input pin. RA4/AN4/CAP3/QEB RA4 AN4 CAP3 QEB 63 I/O I I I TTL Analog ST ST Digital I/O. Analog Input 4. Input Capture Pin 3. Quadrature Encoder Interface Channel B input pin. Legend: TTL = TTL compatible input CMOS = CMOS compatible input or output ST = Schmitt Trigger input with CMOS levels I = Input O = Output P = Power |
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