PIC16F636-I Datasheet, PDF (16/234 Pages) Microchip Technology – 8/14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC12F635/PIC16F636/639
TABLE 1-3: PIC16F639 PINOUT DESCRIPTIONS
Name
Function
Input
Type
Output
Type
Description
LCCOM
LCX
LCY
LCZ
RA0/C1IN+/ICSPDAT/ULPWU
LCCOM
LCX
LCY
LCZ
RA0
RA1/C1IN-/VREF/ICSPCLK
C1IN+
ICSPDAT
ULPWU
RA1
RA2/T0CKI/INT/C1OUT
C1IN-
VREF
ICSPCLK
RA2
RA3/MCLR/VPP
T0CKI
INT
C1OUT
RA3
RA4/T1G/OSC2/CLKOUT
MCLR
VPP
RA4
RA5/T1CKI/OSC1/CLKIN
T1G
OSC2
CLKOUT
RA5
RC0/C2IN+
RC1/C2IN-/CS
T1CKI
OSC1
CLKIN
RC0
C2IN+
RC1
C2IN-
CS
RC2/SCLK/ALERT
RC2
SCLK
ALERT
Legend:
AN = Analog input or output
HV = High Voltage
TTL = TTL compatible input
AN
— Common reference for analog inputs.
AN
— 125 kHz analog X channel input.
AN
— 125 kHz analog Y channel input.
AN
— 125 kHz analog Z channel input.
TTL
— General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up/pull-down.
Selectable Ultra Low-Power Wake-up pin.
AN
— Comparator1 input – positive.
TTL CMOS Serial Programming Data IO.
AN
— Ultra Low-Power Wake-up input.
TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up/pull-down.
AN
— Comparator1 input – negative.
AN
— External voltage reference
ST
— Serial Programming Clock.
ST CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up/pull-down.
ST
— External clock for Timer0.
ST
— External Interrupt.
— CMOS Comparator1 output.
TTL
— ^{General purpose input. Individually controlled}
interrupt-on-change.
ST
— ^{Master Clear Reset. Pull-up enabled when configured as MCLR.}
HV
— Programming voltage.
TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up/pull-down.
ST
— Timer1 gate.
—
XTAL XTAL connection.
— CMOS TOSC reference clock.
TTL CMOS General purpose I/O. Individually controlled interrupt-on-change.
Individually enabled pull-up/pull-down.
ST
— Timer1 clock.
XTAL
— XTAL connection.
ST
— TOSC/4 reference clock.
TTL CMOS General purpose I/O.
AN
— Comparator1 input – positive.
TTL CMOS General purpose I/O.
AN
— Comparator1 input – negative.
TTL
— Chip select input for SPI communication with internal pull-up
resistor.
TTL CMOS General purpose I/O.
TTL
— Digital clock input for SPI communication.
—
OD Output with internal pull-up resistor for AFE error signal.
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels
XTAL = Crystal
D = Direct
OD = Open Drain
DS41232D-page 14
© 2007 Microchip Technology Inc.