Datasheet

dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
DS70000657H-page 26  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 I ST/
CMOS
No External clock source input. Always associated with OSC1 pin function.
CLKO O — No 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.
5: There is an internal pull-up resistor connected to the TMS pin when the JTAG interface is active. See the
JTAGEN bit field in Table 27-2.