Datasheet

Features:

ARM Cortex M4F (with HW floating point acceleration) running at 64MHz

512KB flash and 64KB SRAM

Built in USB Serial converter for fast and efficient programming and debugging

Bluetooth Low Energy compatible 2.4GHz radio (Details available in the nRF52832 (https://adafru.it/Erx) product

specification)

FCC / IC / TELEC certified module

Up to +4dBm output power

1.7v to 3.3v operation with internal linear and DC/DC voltage regulators

19 GPIO, 8 x 12-bit ADC pins, up to 12 PWM outputs (3 PWM modules with 4 outputs each)

Pin #17 red LED for general purpose blinking

Power/enable pin

Measures 2.0" x 0.9" x 0.28" (51mm x 23mm x 8mm) without headers soldered in

Light as a (large?) feather - 5.7 grams

4 mounting holes

Reset button

SWD connector for debugging

100% open source firmware when used with Apache Mynewt (https://adafru.it/Ery)

Bluetooth Low Energy is the hottest new low-power, 2.4GHz spectrum wireless protocol. In particular, its the only

wireless protocol that you can use with iOS without needing special certification and it's supported by all modern smart

phones. This makes it excellent for use in portable projects that will make use of an iOS or Android phone or tablet. It

also is supported in Mac OS X and Windows 8+.

To make it easy to use for portable projects, we added a connector for any of our 3.7V Lithium polymer batteries and

built in battery charging. You don't need a battery, it will run just fine straight from the micro USB connector. But, if you

do have a battery, you can take it on the go, then plug in the USB to recharge. The Feather will automatically switch

over to USB power when it's available. We also tied the battery thru a divider to an analog pin, so you can measure

and monitor the battery voltage to detect when you need a recharge.

The Power of Bluefruit LE

The nRF52 Pro uses an nRF52832 chipset from Nordic, which can be used as both a main microcontroller and a

bluetooth low energy interface. For most people, they'll be very happy to use the standard Nordic UART RX/TX

connection profile - example code is provided! In this profile, the Bluefruit acts as a data pipe, that can 'transparently'

transmit back and forth from your iOS or Android device. You can use our iOS App (https://adafru.it/iCi) or Android

App (https://adafru.it/f4G), or write your own to communicate with the UART service (https://adafru.it/yud).

The board is capable of much more than just sending strings over the air! Thanks to the Apache Mynewt operating

system, you have full control over how the device behaves, including the ability to define and manipulate your

own GATT Services and Characteristics (https://adafru.it/yue), or change the way that the device advertises itself for

other Bluetooth Low Energy devices to see.

Use the Bluefruit App to get your project started

Using our Bluefruit iOS App (https://adafru.it/iCi) or Android App (https://adafru.it/f4G), you can quickly get your project

prototyped by using your iOS or Android phone/tablet as a controller. This data can be read over BLE and processed

directly by the nRF52 microcontroller

Comes fully assembled and tested, with a USB Serial bootloader that lets you quickly use it from the command line. We