Datasheet

 2010 Microchip Technology Inc. DS41326E-page 13
PIC16F526
TABLE 3-2: PIC16F526 PINOUT DESCRIPTION
Name Function
Input
Type
Output
Type
Description
RB0//C1IN+/AN0/
ICSPDAT
RB0 TTL CMOS Bidirectional I/O pin. Can be software programmed for internal
weak pull-up and wake-up from Sleep on pin change.
C1IN+ AN — Comparator 1 input.
AN0 AN — ADC channel input.
ICSPDAT ST CMOS ICSP™ mode Schmitt Trigger.
RB1/C1IN-/AN1/
ICSPCLK
RB1 TTL CMOS Bidirectional I/O pin. Can be software programmed for internal
weak pull-up and wake-up from Sleep on pin change.
C1IN- AN — Comparator 1 input.
AN1 AN — ADC channel input.
ICSPCLK ST CMOS ICSP mode Schmitt Trigger.
RB2/C1OUT/AN2 RB2 TTL CMOS Bidirectional I/O pin.
C1OUT — CMOS Comparator 1 output.
AN2 AN — 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 V
DD 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 (F
OSC/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/CV
REF 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.
V
DD VDD — P Positive supply for logic and I/O pins.
V
SS 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