> 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
## Hardware Version V1.4 2026
## Technical specifications and features
Most of the specifications outlined below are based on Nordic's [nRF9151 Product Specification](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 %}
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