Datasheet

dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
DS70657G-page 24  2011-2013 Microchip Technology Inc.
TABLE 1-1: PINOUT I/O DESCRIPTIONS
Pin Name
(4)
Pin
Type
Buffer
Type
PPS Description
AN0-AN15 I Analog No Analog input channels.
CLKI
CLKO
I
O
ST/
CMOS
—
No
No
External clock source input. Always associated with OSC1 pin function.
Oscillator crystal output. Connects to crystal or resonator in Crystal
Oscillator mode. Optionally functions as CLKO in RC and EC modes.
Always associated with OSC2 pin function.
OSC1
OSC2
I
I/O
ST/
CMOS
—
No
No
Oscillator crystal input. ST buffer when configured in RC mode; CMOS
otherwise.
Oscillator crystal output. Connects to crystal or resonator in Crystal
Oscillator mode. Optionally functions as CLKO in RC and EC modes.
REFCLKO O — Yes Reference clock output.
IC1-IC4 I ST Yes Capture Inputs 1 through 4.
OCFA
OCFB
OC1-OC4
I
I
O
ST
ST
—
Yes
No
Yes
Compare Fault A input (for Compare channels).
Compare Fault B input (for Compare channels).
Compare Outputs 1 through 4.
INT0
INT1
INT2
I
I
I
ST
ST
ST
No
Yes
Yes
External Interrupt 0.
External Interrupt 1.
External Interrupt 2.
RA0-RA4, RA7-RA12 I/O ST No PORTA is a bidirectional I/O port.
RB0-RB15 I/O ST No PORTB is a bidirectional I/O port.
RC0-RC13, RC15 I/O ST No PORTC is a bidirectional I/O port.
RD5, RD6, RD8 I/O ST No PORTD is a bidirectional I/O port.
RE12-RE15 I/O ST No PORTE is a bidirectional I/O port.
RF0, RF1 I/O ST No PORTF is a bidirectional I/O port.
RG6-RG9 I/O ST No PORTG is a bidirectional I/O port.
T1CK
T2CK
T3CK
T4CK
T5CK
I
I
I
I
I
ST
ST
ST
ST
ST
No
Yes
No
No
No
Timer1 external clock input.
Timer2 external clock input.
Timer3 external clock input.
Timer4 external clock input.
Timer5 external clock input.
CTPLS
CTED1
CTED2
O
I
I
ST
ST
ST
No
No
No
CTMU pulse output.
CTMU External Edge Input 1.
CTMU External Edge Input 2.
U1CTS
U1RTS
U1RX
U1TX
BCLK1
I
O
I
O
O
ST
—
ST
—
ST
No
No
Yes
Yes
No
UART1 Clear-to-Send.
UART1 Ready-to-Send.
UART1 receive.
UART1 transmit.
UART1 IrDA
®
baud clock output.
Legend: CMOS = CMOS compatible input or output Analog = Analog input P = Power
ST = Schmitt Trigger input with CMOS levels O = Output I = Input
PPS = Peripheral Pin Select TTL = TTL input buffer
Note 1: This pin is available on dsPIC33EPXXXMC20X/50X and PIC24EPXXXMC20X devices only.
2: This pin is available on dsPIC33EPXXXGP/MC50X devices only.
3: This is the default Fault on Reset for dsPIC33EPXXXMC20X/50X and PIC24EPXXXMC20X devices. See
Section 16.0 “High-Speed PWM Module (dsPIC33EPXXXMC20X/50X and PIC24EPXXXMC20X
Devices Only)” for more information.
4: Not all pins are available in all packages variants. See the “Pin Diagrams” section for pin availability.