Microchip Technology MA330016 Data Sheet

© 2007-2011 Microchip Technology Inc.

DS70290H-page 11

AN0-AN12

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 Oscil-
lator mode. Optionally functions as CLKO in RC and EC modes.

SOSCI
SOSCO

I

O

ST/CMOS

—

No
No

32.768 kHz low-power oscillator crystal input; CMOS otherwise.
32.768 kHz low-power oscillator crystal output. 

CN0-CN30

I

ST

No

Change notification inputs.
Can be software programmed for internal weak pull-ups on all inputs.

IC1-IC2
IC7-IC8

I

ST

Yes
Yes

Capture inputs 1/2.
Capture inputs 7/8.

OCFA
OC1-OC2

I

O

ST

—

Yes
Yes

Compare Fault A input (for Compare Channels 1 and 2).
Compare outputs 1 through 2.

INT0
INT1
INT2

I
I
I

ST
ST
ST

No

Yes
Yes

External interrupt 0.
External interrupt 1.
External interrupt 2.

RA0-RA4
RA7-RA10

I/O

ST

No
No

PORTA is a bidirectional I/O port.

RB0-RB15

I/O

ST

No

PORTB is a bidirectional I/O port.

RC0-RC9

I/O

ST

No

PORTC is a bidirectional I/O port.

T1CK
T2CK
T3CK

I
I
I

ST
ST
ST

No

Yes
Yes

Timer1 external clock input.
Timer2 external clock input.
Timer3 external clock input.

U1CTS
U1RTS
U1RX
U1TX

I

O

I

O

ST

—

ST

—

Yes
Yes
Yes
Yes

UART1 clear to send.
UART1 ready to send.
UART1 receive.
UART1 transmit.

SCK1
SDI1
SDO1
SS1

I/O

I

O

I/O

ST
ST

—

ST

Yes
Yes
Yes
Yes

Synchronous serial clock input/output for SPI1.
SPI1 data in.
SPI1 data out.
SPI1 slave synchronization or frame pulse I/O.

SCL1
SDA1
ASCL1
ASDA1

I/O
I/O
I/O
I/O

ST
ST
ST
ST

No
No
No
No

Synchronous serial clock input/output for I2C1.
Synchronous serial data input/output for I2C1.
Alternate synchronous serial clock input/output for I2C1.
Alternate synchronous serial data input/output for I2C1.

TMS
TCK
TDI
TDO

I
I
I

O

ST
ST
ST

—

No
No
No
No

JTAG Test mode select pin.
JTAG test clock input pin.
JTAG test data input pin.
JTAG test data output pin.

PGED1
PGEC1
PGED2
PGEC2
PGED3
PGEC3

I/O

I

I/O

I

I/O

I

ST
ST
ST
ST
ST
ST

No
No
No
No
No
No

Data I/O pin for programming/debugging communication channel 1.
Clock input pin for programming/debugging communication channel 1.
Data I/O pin for programming/debugging communication channel 2.
Clock input pin for programming/debugging communication channel 2.
Data I/O pin for programming/debugging communication channel 3.
Clock input pin for programming/debugging communication channel 3.

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