AVDD |
33, 36, 39, 40, 41 |
Power (analog) |
2-V–3.6-V analog power-supply connection |
AVDD_GUARD |
43 |
Power (analog) |
2-V–3.6-V analog power-supply connection |
DCOUPL1 |
56 |
Power (digital) |
1.8-V regulated digital-supply decoupling capacitor |
DCOUPL2 |
32 |
Power (digital) |
1.8-V regulated digital-supply decoupling capacitor. Short this pin to pin 56. |
DGND_USB |
1 |
Ground (USB pads) |
USB ground |
DVDD |
10, 15, 24, 55 |
Power (digital) |
2-V–3.6-V digital power-supply connection |
DVDD_USB |
4 |
Power (USB pads) |
3.3-V USB power-supply connection |
JTAG_TCK |
47 |
Digital I/O |
JTAG TCK |
JTAG_TMS |
46 |
Digital I/O |
JTAG TMS |
PA0 |
16 |
Digital/analog I/O |
GPIO port A pin 0. ROM bootloader UART RXD |
PA1 |
17 |
Digital/analog I/O |
GPIO port A pin 1. ROM bootloader UART TXD |
PA2 |
18 |
Digital/analog I/O |
GPIO port A pin 2. ROM bootloader SSI CLK |
PA3 |
19 |
Digital/analog I/O |
GPIO port A pin 3. ROM bootloader SSI SEL |
PA4 |
20 |
Digital/analog I/O |
GPIO port A pin 4. ROM bootloader SSI RXD |
PA5 |
21 |
Digital/analog I/O |
GPIO port A pin 5. ROM bootloader SSI TXD |
PA6 |
22 |
Digital/analog I/O |
GPIO port A pin 6 |
PA7 |
23 |
Digital/analog I/O |
GPIO port A pin 7 |
PB0 |
5 |
Digital I/O |
GPIO port B pin 0 |
PB1 |
54 |
Digital I/O |
GPIO port B pin 1 |
PB2 |
53 |
Digital I/O |
GPIO port B pin 2 |
PB3 |
52 |
Digital I/O |
GPIO port B pin 3 |
PB4 |
51 |
Digital I/O |
GPIO port B pin 4 |
PB5 |
50 |
Digital I/O |
GPIO port B pin 5 |
PB6 |
49 |
Digital I/O |
GPIO port B pin 6, TDI (JTAG) |
PB7 |
48 |
Digital I/O |
GPIO port B pin 7, TDO (JTAG) |
PC0 |
14 |
Digital I/O |
GPIO port C pin 0, 20 mA output capability, no pull-up or pull-down |
PC1 |
13 |
Digital I/O |
GPIO port C pin 1, 20 mA output capability, no pull-up or pull-down |
PC2 |
12 |
Digital I/O |
GPIO port C pin 2, 20 mA output capability, no pull-up or pull-down |
PC3 |
11 |
Digital I/O |
GPIO port C pin 3, 20 mA output capability, no pull-up or pull-down |
PC4 |
9 |
Digital I/O |
GPIO port C pin 4 |
PC5 |
8 |
Digital I/O |
GPIO port C pin 5 |
PC6 |
7 |
Digital I/O |
GPIO port C pin 6 |
PC7 |
6 |
Digital I/O |
GPIO port C pin 7 |
PD0 |
25 |
Digital I/O |
GPIO port D pin 0 |
PD1 |
26 |
Digital I/O |
GPIO port D pin 1 |
PD2 |
27 |
Digital I/O |
GPIO port D pin 2 |
PD3 |
29 |
Digital I/O |
GPIO port D pin 3 |
PD4 |
30 |
Digital I/O |
GPIO port D pin 4 |
PD5 |
31 |
Digital I/O |
GPIO port D pin 5 |
PD6/XOSC32K_Q1 |
44 |
Digital/analog I/O |
GPIO port D pin 6 / 32-kHz crystal oscillator pin 1 |
PD7/XOSC32K_Q2 |
45 |
Digital/analog I/O |
GPIO port D pin 7 / 32-kHz crystal oscillator pin 1 |
R_BIAS |
42 |
Analog I/O |
External precision bias resistor for reference current |
RESET_N |
28 |
Digital input |
Reset, active-low |
RF_N |
38 |
RF I/O |
Negative RF input signal to LNA during RX Negative RF output signal from PA during TX |
RF_P |
37 |
RF I/O |
Positive RF input signal to LNA during RX Positive RF output signal from PA during TX |
USB_P |
2 |
USB I/O |
USB differential data plus (D+) |
USB_N |
3 |
USB I/O |
USB differential data minus (D–) |
XOSC32M_Q1 |
34 |
Analog I/O |
32-MHz crystal oscillator pin 1 or external-clock input |
XOSC32M_Q2 |
35 |
Analog I/O |
32-MHz crystal oscillator pin 2 |