> For the complete documentation index, see [llms.txt](https://docs.conexiotech.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.conexiotech.com/master/stratus-overview.md).

# Stratus Pro nRF9151 Overview

## Board Layout

![Conexio Stratus Pro nRF9151 V1.0 top view.](/files/SWIfaL34bEnkdtIe0tEL)

![Conexio Stratus Pro nRF9151 V1.0 bottom view.](/files/lJsQLz6pdl0NBWS5ehEP)

## Hardware Version V1.4 2026

## Technical specifications and features

Most of the specifications outlined below are based on Nordic's [<mark style="color:red;">nRF9151 Product Specification</mark>](https://www.nordicsemi.com/Products/nRF9151).

**MCU**: Latest Gen Nordic nRF9151 SiP

* ARM Cortex-M33 with 1MB Flash
* 256kB RAM
* ARM® TrustZone®
* ARM® Cryptocell 310
* Up to 4x SPI, I2C, and UART with Easy DMA
* I2S w/ EasyDMA
* 4x PWM with EasyDMA
* 12bit SADC with EasyDMA
* 2x RTC
* PPI (Programmable peripheral interconnect) interface

**Modem**

* Transceiver and baseband
* 3GPP LTE release 14 LTE-M/NB-IoT support
* DECT NR+ ready
* NTN ready
* GPS/GNSS receiver
* RF Transceiver for global coverage supporting bands:
* B1, B2, B3, B4, B5, B8, B12, B13, B17, B18, B19, B20, B25, B26, B28, B65 (new), B66, and B85 (new)
* Supports 4FF Nano SIM
* Pre-programmed MCUBoot bootloader

**nPM1300 Power Management IC**

* 800 mA battery charger
* Dual 200 mA buck DCDC regulator
* Battery fuel gauge controlled via I2C
* Battery charge status and protection
* Battery charging over USB-C

**Energy harvester IC**

* Onboard battery charger with solar energy harvester
* Continuous Charge Current Up to 1A
* Input supply voltage of 4.4-6V
* Supports battery types Li-ion, Li-Poly, and LiFePO4 chemistries
* Automatic charge current adjustment based on the output capability of the input power supply

**Board Operating Power Supply**

* Operating range 1.8 to 5.5V
* External LiPo battery connection (2 Pin JST type)
* Maximum output current: 800mA

**Stratus Output Voltages (Accessible via Headers)**

* 1.8V
* 3.3V
* 5V (VUSB)
* VBAT

**USB-TYPE-C**

* USB-to-Serial communication
* Device Firmware Update (DFU) over USB
* Application firmware programming and debugging over USB
* LiPo battery charging

**Debugger & Programmer**

* Supports J-Link and CMSIS-DAP-based programmers
* Onboard 10-pin 0.05" (1.27mm) SWD/JTAG pin connector

**User I/O**

* Feather compatible header
* 28 user-programmable GPIOs
* 2 x push buttons (1 x Reset, 1 x user-programmable)
* 1 x user-programmable LED
* 1 x RGB LED connected to nPM1300 PMIC (V1.4 Hardware only)

**Antenna connections**

* 1 x U.FL for LTE-M/NB-IoT
* 1 x U.FL for passive GPS antenna

**Onboard sensors**

* nPM1300 Battery fuel gauge
* The internal temperature sensor of nRF9151

**External Storage**

* 16 KBit I2C EEPROM memory (24CW160T)

**External Peripheral Interface**

* Stratus Pro board has a QWIIC connector to interface external shields, sensors, and much more.

**Power switch**

* SPDT slide switch for turning ON/OFF the power to the Stratus Pro board

**SIM Compatibility**

* 4FF Nano SIM card holder
* eSIM footprint to solder your own
* Software-based SIM support

**Prepaid Data (Not shipped with Bring Your SIM Version BYOS)**

* 500 MB of cellular data
* 250 SMS
* 10-year data validity
* Service available in 100+ countries (LTE + NB-IoT)

**Operating Voltage Selector**

* Hardware jumper for selecting between 1.8B and 3.3V operating voltage.

**Physical Size**

* 67.04 mm x 22 mm

### Hardware Revision Changes V1.4 (2026)

**Addition**

* nRF9151-LACA-A1A chipset
* 1 x RGB LED connected to nPM1300 PMIC
* Hardware jumper for voltage selection (1.8V/3.3V)

**Removed**

* LIS2DH sensor

**Bug**

* Fixed back power introduced by the CP2102N chipset when USB is connected

## Download the Full Datasheet

{% file src="/files/s0Wwqywvuc1L0RhMoVyr" %}
Stratus Pro Reference Manual
{% endfile %}