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nRF52805-CAAA-R7

nRF52805-CAAA-R7

MPN: NRF52805-CAAA-R7
Nordic Semiconductor ASA
IC RF TxRx + MCU Bluetooth Bluetooth v5.2 2.4GHz 28-UFBGA, WLCSP
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Overview

The nRF52805-CAAA-R7 is an ultra-compact Bluetooth 5.2 SoC built around a 64 MHz Arm Cortex-M4 processor. Packaged in a tiny 2.48 mm x 2.46 mm WLCSP, it provides a cost-optimized solution for simple wireless applications requiring high-performance processing in space-constrained designs.

Why Choose This Part

It offers an integrated balun and single-crystal operation to minimize the external Bill of Materials. The device balances power efficiency with a 1.1 uA sleep current and features the Programmable Peripheral Interconnect (PPI) for hardware-level automation without CPU intervention.

Applications

Disposable Medical Sensors
Ideal for single-use health monitors where small footprint and low cost are critical.
Stylus and Input Devices
Fits into slim cylindrical form factors for active pens and wireless peripherals.
Proprietary 2.4 GHz Beacons
Utilizes the built-in 2.4 GHz radio for low-duty cycle broadcasting and asset tracking.
Smart Home Sensors
Serves as a cost-effective node for temperature, humidity, or door/window sensors.

Key Specifications

GPIO 10
Type TxRx + MCU
Protocol Bluetooth v5.2
Frequency 2.4GHz
Memory Size 192kB Flash, 24kB RAM
Sensitivity -97dBm
Mounting Type Surface Mount
Package / Case 28-UFBGA, WLCSP
Power - Output 4dBm
Data Rate (Max) 2Mbps
Voltage - Supply 1.7V ~ 3.6V
Serial Interfaces ADC, GPIO, I2C, SPI, UART
RF Family/Standard Bluetooth
Current - Receiving 4.6mA
Operating Temperature -40degC ~ 85degC
Current - Transmitting 4.6mA
Supplier Device Package 28-WLCSP (2.48x2.46)

Getting Started

Development is supported by the nRF Connect SDK and Segger Embedded Studio. For hardware prototyping, use the nRF52 DK (PCA10040) or nRF52840 DK, as the nRF52805 is software-compatible with its larger siblings in the nRF52 series.

Part of nRF52 family » nRF52805

NRF52805 Family

Also available as: nRF52805-CAAA-R

Also Consider

nRF52810 nRFNordic Semiconductor - Provides a similar WLCSP footprint but with slightly more GPIO and peripheral flexibility.
DA14531 SmartBond TINY RENRenesas Electronics - An alternative ultra-low power Bluetooth SoC focused on the smallest possible footprint and lowest system cost.