Datasheet

 2011-2013 Microchip Technology Inc. DS30001037C-page 17
PIC24F16KL402 FAMILY
SOSCI 9 6 11 8 I ANA Secondary Oscillator Input
SOSCO 10 7 12 9 O ANA Secondary Oscillator Output
SS1
12 9 26 23 O — SPI1 Slave Select
SS2
15 12 23 20 O — SPI2 Slave Select
T1CK 13 10 18 15 I ST Timer1 Clock
T3CK 18 15 26 23 I ST Timer3 Clock
T3G 6363ISTTimer3 External Gate Input
U1CTS 12 9 17 14 I ST UART1 Clear-to-Send Input
U1RTS 13 10 18 15 O — UART1 Request-to-Send Output
U1RX 6363ISTUART1 Receive
U1TX 11 8 16 13 O — UART1 Transmit
U2CTS 10 7 12 9 I ST UART2 Clear-to-Send Input
U2RTS 9 6 11 8 O — UART2 Request-to-Send Output
U2RX 5252ISTUART2 Receive
U2TX 4141O—UART2 Transmit
ULPWU 4141IANAUltra Low-Power Wake-up Input
V
DD 20 17 13, 28 10, 25 P — Positive Supply for Peripheral Digital Logic and
I/O Pins
V
REF+ 2 19 2 27 I ANA A/D Reference Voltage Input (+)
V
REF- 3 20 3 28 I ANA A/D Reference Voltage Input (-)
V
SS 19 16 8, 27 5, 24 P — Ground Reference for Logic and I/O Pins
TABLE 1-4: PIC24F16KL40X/30X FAMILY PINOUT DESCRIPTIONS (CONTINUED)
Function
Pin Number
I/O Buffer Description
20-Pin
PDIP/
SSOP/
SOIC
20-Pin
QFN
28-Pin
SPDIP/
SSOP/
SOIC
28-Pin
QFN
Legend: TTL = TTL input buffer ST = Schmitt Trigger input buffer
ANA = Analog level input/output I
2
C = I
2
C™/SMBus input buffer