PIC16F526 Datasheet, PDF (13/122 Pages) Microchip Technology – 14-Pin, 8-Bit Flash Microcontroller

PIC16F526
TABLE 3-2: PIC16F526 PINOUT DESCRIPTION
Name
Function
Input
Type
Output
Type
Description
RB0//C1IN+/AN0/
ICSPDAT
RB1/C1IN-/AN1/
ICSPCLK
RB2/C1OUT/AN2
RB0
TTL
C1IN+ AN
AN0
AN
ICSPDAT ST
RB1
TTL
C1IN-
AN
AN1
AN
ICSPCLK ST
RB2
TTL
C1OUT —
AN2
AN
CMOS Bidirectional I/O pin. Can be software programmed for internal
weak pull-up and wake-up from Sleep on pin change.
— Comparator 1 input.
— ADC channel input.
CMOS ICSP™ mode Schmitt Trigger.
CMOS Bidirectional I/O pin. Can be software programmed for internal
weak pull-up and wake-up from Sleep on pin change.
— Comparator 1 input.
— ADC channel input.
CMOS ICSP mode Schmitt Trigger.
CMOS Bidirectional I/O pin.
CMOS Comparator 1 output.
— ADC channel input.
RB3/MCLR/VPP
RB3
TTL
— Input pin. Can be software programmed for internal weak
pull-up and wake-up from Sleep on pin change.
MCLR ST
— Master Clear (Reset). When configured as MCLR, this pin is
an active-low Reset to the device. Voltage on MCLR/VPP must
not exceed VDD during normal device operation or the device
will enter Programming mode. Weak pull-up always on if
configured as MCLR.
VPP
HV
— Programming voltage input.
RB4/OSC2/CLKOUT
RB4
TTL CMOS Bidirectional I/O pin. Can be software programmed for internal
weak pull-up and wake-up from Sleep on pin change.
OSC2
— XTAL Oscillator crystal output. Connections to crystal or resonator in
Crystal Oscillator mode (XT, HS and LP modes only, PORTB
in other modes).
CLKOUT — CMOS EXTRC/INTRC CLKOUT pin (FOSC/4).
RB5/OSC1/CLKIN
RB5
TTL CMOS Bidirectional I/O pin.
OSC1 XTAL — Oscillator crystal input.
CLKIN ST
— External clock source input.
RC0/C2IN+
RC0
TTL CMOS Bidirectional I/O port.
C2IN+ AN
— Comparator 2 input.
RC1/C2IN-
RC1
TTL CMOS Bidirectional I/O port.
C2IN-
AN
— Comparator 2 input.
RC2/CVREF
RC2
TTL CMOS Bidirectional I/O port.
CVREF
—
AN Programmable Voltage Reference output.
RC3
RC3
TTL CMOS Bidirectional I/O port.
RC4/C2OUT
RC4
TTL CMOS Bidirectional I/O port.
C2OUT — CMOS Comparator 2 output.
RC5/T0CKI
RC5
TTL CMOS Bidirectional I/O port.
T0CKI ST
— Timer0 Schmitt Trigger input pin.
VDD
VDD
—
P Positive supply for logic and I/O pins.
VSS
VSS
—
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, HV = High Voltage
 2010 Microchip Technology Inc.
DS41326D-page 13