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PIC16C54A Datasheet(PDF) 11 Page - Microchip Technology |
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PIC16C54A Datasheet(HTML) 11 Page - Microchip Technology |
11 / 192 page 1997-2013 Microchip Technology Inc. Preliminary DS30453E-page 11 PIC16C5X TABLE 3-1: PINOUT DESCRIPTION - PIC16C54, PIC16CR54, PIC16C56, PIC16CR56, PIC16C58, PIC16CR58 Pin Name Pin Number Pin Buffer Description DIP SOIC SSOP Type Type RA0 RA1 RA2 RA3 17 18 1 2 17 18 1 2 19 20 1 2 I/O I/O I/O I/O TTL TTL TTL TTL Bi-directional I/O port RB0 RB1 RB2 RB3 RB4 RB5 RB6 RB7 6 7 8 9 10 11 12 13 6 7 8 9 10 11 12 13 7 8 9 10 11 12 13 14 I/O I/O I/O I/O I/O I/O I/O I/O TTL TTL TTL TTL TTL TTL TTL TTL Bi-directional I/O port T0CKI 3 3 3 I ST Clock input to Timer0. Must be tied to VSS or VDD, if not in use, to reduce current consumption. MCLR/VPP 4 4 4 I ST Master clear (RESET) input/programming voltage input. This pin is an active low RESET to the device. Voltage on the MCLR/VPP pin must not exceed VDD to avoid unin- tended entering of Programming mode. OSC1/CLKIN 16 16 18 I ST Oscillator crystal input/external clock source input. OSC2/CLKOUT 15 15 17 O — Oscillator crystal output. Connects to crystal or resonator in crystal Oscillator mode. In RC mode, OSC2 pin outputs CLKOUT, which has 1/4 the frequency of OSC1 and denotes the instruction cycle rate. VDD 14 14 15,16 P — Positive supply for logic and I/O pins. VSS 5 5 5,6 P — Ground reference for logic and I/O pins. Legend: I = input, O = output, I/O = input/output, P = power, — = Not Used, TTL = TTL input, ST = Schmitt Trigger input |
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