
10 JN-DS-JN5148-001 1v9 © NXP Laboratories UK 2013
2.1 Pin Assignment
Pin No Power supplies
Signal
Type
Description
10, 12, 16, 18, 27,
VB_SYNTH, VB_VCO, VB_RF2, VB_RF, VB_A, VB_RAM,
1.8V Regulated supply voltage
13, 49 VDD1, VDD2 3.3V
Supplies: VDD1 for analogue,
32, 6, 3, 7, Paddle VSS1, VSS2, VSS3, VSSS, VSSA 0V
Grounds (see appendix A.2 for
paddle details)
General
8, 9 XTAL_OUT, XTAL_IN 1.8V System crystal oscillator
Radio
14 IBIAS 1.8V Bias current control
Analogue Peripheral I/O
21, 22, 23, 24 ADC1, ADC2, ADC3, ADC4 3.3V ADC inputs
Analogue peripheral reference
voltage
19, 20 COMP1M/EXT_PA_B, COMP1P/EXT_PA_C 3.3V
Comparator 1 inputs and
external PA control
Primary Alternate Functions
33 SPICLK CMOS SPI Clock Output
36 SPIMOSI CMOS SPI Master Out Slave In Output
SPI Master In Slave Out Input
37 SPISEL0 CMOS SPI Slave Select Output 0
38 DIO0 SPISEL1 CMOS
DIO0 or SPI Slave Select Output
41 DIO1 SPISEL2 PC0 CMOS
DIO1, SPI Slave Select Output 2
42 DIO2 SPISEL3 RFRX CMOS
DIO2, SPI Slave Select Output 3
or Radio Receive Control Output
DIO3, SPI Slave Select Output 4
or Radio Transmit Control Output
DIO4, UART 0 Clear To Send
Input or JTAG CLK
DIO5, UART 0 Request To Send
Output or JTAG Mode Select
DIO6, UART 0 Transmit Data
Output or JTAG Data Output
47 DIO7 RXD0 JTAG_TDI CMOS
DIO7, UART 0 Receive Data
Input or JTAG Data Input
48 DIO8 TIM0CK_GT PC1 CMOS
DIO8, Timer0 Clock/Gate Input
or Pulse Counter1 Input
50 DIO9 TIM0CAP 32KXTALIN 32KIN CMOS
DIO9, Timer0 Capture Input, 32K
External Crystal Input or 32K
Clock Input
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