Overview

The nRF52832 is an ultra-low power multiprotocol System-on-Chip (SoC) manufactured by Nordic Semiconductor. Powered by a 32-bit ARM Cortex-M4 processor with floating point unit (FPU) running at 64 MHz64\text{ MHz}, it integrates a full Bluetooth 5 qualified 2.4 GHz radio transceiver, 512 KB512\text{ KB} of Flash, 64 KB64\text{ KB} of RAM, and an NFC-A tag module.

Designed specifically for battery-powered wearable devices, wireless sensors, smart home products, and medical telemetry, the nRF52832 delivers high processing efficiency alongside ultra-low radio current consumption (5.3 mA5.3\text{ mA} peak TX current).

Quick reference

CPU CoreARM 32-bit Cortex-M4 with FPU
Clock Speed64 MHz64\text{ MHz}
Flash Memory512 KB512\text{ KB}
SRAM64 KB64\text{ KB}
Operating Voltage (VDD)1.7 V to 3.6 V DC
Wireless SupportBluetooth 5.0, Bluetooth Low Energy, ANT, 2.4 GHz Proprietary
Max Output Power+4 dBm+4\text{ dBm} (configurable down to −20 dBm-20\text{ dBm})
RX Sensitivity−96 dBm-96\text{ dBm} at 1 Mbps BLE
TX Current (0 dBm)5.3 mA5.3\text{ mA}
Sleep Current (System OFF)0.3 μA0.3\ \mu\text{A}
PackageQFN48 (6×6 mm6 \times 6\text{ mm}) / WLCSP50

Pinout (QFN-48 Package)

text
                    ┌───┴───┐
          DEC1  1│ 1   48│ DEC4 (1V3)
           P0.00 2│       │47 XC2
(NFC1)     P0.01 3│       │46 XC1
(NFC2)     P0.02 4│nRF52832│45 DEC3
           P0.03 5│ QFN48 │44 DEC2
           P0.04 6│       │43 VDD
           P0.05 7│       │42 ANT
           P0.06 8│       │41 VSS_PA
           P0.07 9│       │40 DEC5
          P0.08 10│       │39 P0.31
   (NRESET) P0.21 21│     │25 P0.17
                    └───────┘
PinNameDescription
2P0.00 / XL1General Purpose I/O / 32.768 kHz Crystal Input
3P0.01 / XL2General Purpose I/O / 32.768 kHz Crystal Output
4P0.02 / NFC1General Purpose I/O / NFC Antenna Pin 1
5P0.03 / NFC2General Purpose I/O / NFC Antenna Pin 2
21P0.21 / nRESETGeneral Purpose I/O / Hardware Reset Input
25P0.17General Purpose I/O
42ANT2.4 GHz Antenna RF Output
43VDDPower supply input (1.7 V to 3.6 V)
46XC164 MHz Crystal Input
47XC264 MHz Crystal Output

Specifications

ParameterSymbolMinTypMaxUnitConditions
Supply VoltageVDDV_{DD}1.73.03.6VDC
TX Peak CurrentITXI_{TX}—5.37.5mA+0 dBm+0\text{ dBm} output power, DC-DC
RX Peak CurrentIRXI_{RX}—5.46.5mA1 Mbps BLE, DC-DC mode
System ON Idle CurrentIONI_{ON}—1.9—µARTC active, 64KB RAM retained
System OFF CurrentIOFFI_{OFF}—0.31.5µANo RAM retention
ADC ResolutionNADCN_{ADC}—12—Bit200 ksps conversion rate

Programming & Debugging Interface

Programming the nRF52832 requires a J-Link or CMSIS-DAP SWD programmer:

Programmer→nRF52832 Pin
VDDVDD (Pin 43)
GNDVSS (Ground)
SWDIOSWDIO
SWDCLKSWDCLK

Common mistakes

  • Omitting external decoupling capacitors on DEC pins: The nRF52832 relies on internal switching regulators (DC-DC / LDO) requiring external ceramic capacitors connected to DEC1, DEC2, DEC3, DEC4, and DEC5. Omitting them prevents the core from booting.
  • Using P0.09 / P0.10 as GPIO without disabling NFC: Pins P0.09 and P0.10 default to NFC antenna pins in software. To use them as standard GPIOs, CONFIG_NFCT_PINS_AS_GPIOS must be set in the build system.

Notes

  • nRF52832 vs ESP32: nRF52832 consumes significantly lower power (5.3 mA5.3\text{ mA} TX vs 240 mA240\text{ mA} on ESP32), making it ideal for coin-cell battery devices; ESP32 includes Wi-Fi and higher CPU clock speeds (240 MHz240\text{ MHz}).

Assets & downloads