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Analog
Analog
Description
Synchronous serial clock input/output for I
2
C.
Synchronous serial data input/output for I
2
C.
32 kHz low power oscillator crystal output.
32 kHz low power oscillator crystal input. ST buffer when
configured in RC mode; CMOS otherwise.
Timer1 external clock input.
Timer2 external clock input.
UART1 Receive.
UART1 Transmit.
UART1 Alternate Receive.
UART1 Alternate Transmit.
UART2 Receive.
UART2 Transmit.
Positive supply for logic and I/O pins.
Ground reference for logic and I/O pins.
Analog Voltage Reference (High) input.
Analog Voltage Reference (Low) input.
Pin Name
SCL
SDA
SOSCO
SOSCI
T1CK
T2CK
U1RX
U1TX
U1ARX
U1ATX
U2RX
U2TX
V
DD
V
SS
V
REF
+
V
REF
-
Legend:
CMOS = CMOS compatible input or output Analog=
ST
= Schmitt Trigger input with CMOS levelsO=
I
= Input P
=
Analog input
Output
Power
漏
2005 Microchip Technology Inc.
Preliminary
DS70139C-page 15