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PIC16LF818 Datasheet(PDF) 7 Page - Microchip Technology |
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PIC16LF818 Datasheet(HTML) 7 Page - Microchip Technology |
7 / 178 page 2001-2013 Microchip Technology Inc. DS39598F-page 7 PIC16F818/819 TABLE 1-2: PIC16F818/819 PINOUT DESCRIPTIONS Pin Name PDIP/ SOIC Pin# SSOP Pin# QFN Pin# I/O/P Type Buffer Type Description PORTA is a bidirectional I/O port. RA0/AN0 RA0 AN0 17 19 23 I/O I TTL Analog Bidirectional I/O pin. Analog input channel 0. RA1/AN1 RA1 AN1 18 20 24 I/O I TTL Analog Bidirectional I/O pin. Analog input channel 1. RA2/AN2/VREF- RA2 AN2 VREF- 11 26 I/O I I TTL Analog Analog Bidirectional I/O pin. Analog input channel 2. A/D reference voltage (low) input. RA3/AN3/VREF+ RA3 AN3 VREF+ 22 27 I/O I I TTL Analog Analog Bidirectional I/O pin. Analog input channel 3. A/D reference voltage (high) input. RA4/AN4/T0CKI RA4 AN4 T0CKI 33 28 I/O I I ST Analog ST Bidirectional I/O pin. Analog input channel 4. Clock input to the TMR0 timer/counter. RA5/MCLR/VPP RA5 MCLR VPP 44 1 I I P ST ST – Input pin. Master Clear (Reset). Input/programming voltage input. This pin is an active-low Reset to the device. Programming threshold voltage. RA6/OSC2/CLKO RA6 OSC2 CLKO 15 17 20 I/O O O ST – – Bidirectional I/O pin. Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator mode. In RC mode, this pin outputs CLKO signal which has 1/4 the frequency of OSC1 and denotes the instruction cycle rate. RA7/OSC1/CLKI RA7 OSC1 CLKI 16 18 21 I/O I I ST ST/CMOS(3) – Bidirectional I/O pin. Oscillator crystal input. External clock source input. Legend: I = Input O = Output I/O = Input/Output P = Power – = Not used TTL = TTL Input ST = Schmitt Trigger Input Note 1: This buffer is a Schmitt Trigger input when configured as the external interrupt. 2: This buffer is a Schmitt Trigger input when used in Serial Programming mode. 3: This buffer is a Schmitt Trigger input when configured in RC Oscillator mode and a CMOS input otherwise. |
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