The BT840F is an advanced, highly flexible solution for today’s increasingly demanding Ultra Low Power, Ultra Long Range, and higher throughput applications in the IoT world. Based on Nordic’s nRF52840 SoC it has inherent industry-grade security which includes an embedded cryptographic accelerator.
BT840E with an u.FL connector for external antenna. FCC certified with ANT060, a 6 dBi antenna. Bluetooth range between two modules is 3400 meters at 125 Kbps.
A host PCB designed for BT840F can use BT840 or BT840E without hardware or firmware change.
To reduce time to market, the following Open source nRF52840 products are available:
USB840F: nRF52840 USB Dongle, pre-certified and in market ready enclosure.
BWG840F: BLE 5, Thread, Zigbee to WiFi gateway.
BLG840F: BLE 5, Thread, Zigbee to LTE gateway.
SE840F: Bluetooth temperature, humidity sensors.
LEWR840E6P: IP65 BLE-LoRa to LTE-WiFI-PoE Ethernet gateway.
SL840F6: IP65 LTE-BLE sensor supporting up to 30 amp-hours batteries.
LN60G840F: LTE-Bluetooth combo module for M.2 connector.
M262840F: Bluetooth-LoRa combo module for M.2 connector.
BT840F, Easy Upgrade or Cost Reduction
All BT Series modules have compatible footprints.
BT840F Main Features:
MCU: Cortex M4F at 64 MHz
Memories: 1MB flash and 256 KB RAM
FCC certified max. TX power: +8.49 dBm. BLE range is 2300 meters at 125 Kbps.
Feature Upgradeable, BT40F
Dual Core Cortex M33, application core up to 128 MHz.
Application core memories: 1MB flash and 256KB RAM.
Network core memories: 256 KB flash and 64 KB RAM.
Bluetooth Range Upgradeable, BT840N/NE
BT840N with nRF21540 PA, +19.1 dBm TX power.
BT840NE with both integrated antenna and u.FL for a 6 dBi external antenna.
BT840F Specifications
Nordic nRF52840 QIAA with ARM Cortex M4F
ARM CryptoCell-310 cryptographic co-processor
1MB flash, 256 KB RAM
Complete RF solution with integrated antenna
Multiple protocols: BLE, ANT, Thread, Zigbee
NFC-A tag interface for Out Of Band pairing
128-bit AES HW encryption
Serial Wire Debug (SWD)
Nordic SoftDevice Ready
Over-The-Air (OTA) firmware update
48 GPIOs, firmware configurable, Peripherals
12 bit/200KSps ADC
3x SPI Master/Slave, 8 Mbps
2x 2-wireMaster/Slave, I2C compatible
UART
Quadrature Demodulator (QDEC)
I2S audio interface
Digital microphone interface
Peripherals: Temperature sensor, general comparator, Low power comparator, Random Number Generator
20 channel CPU independent Programmable Peripheral Interconnect (PPI)
5 x 32 bits, 3 x 24 bits Real Time Counters (RTC)
Power:
Operation voltage: 1.7V to 5.5V
Miscellaneous
Operation Temperature: -40°C to +85°C
Integrated shield to resist EMI
Sizes: 15.0×20.8×1.9mm
Availability: Production. Approtect version BT840-p, BT840F-p and BT840E-p production begins in March 2023. For more information and to order free approtect module samples.
Bluetooth Range Measurements
Bluetooth ranges between 2 modules are measured with antenna pointing to sky, one antenna is rotated by 30 degrees after each measurement, average of 12 measurements for each test condition.
Low multiple path interference.
TX= +8 dBm, 1000 meters at 1 Mbps. Antenna is 5.2 meters and 4.2 meters above ground, respectively.
TX= +8 dBm, 2300 meters at 125 Kbps. Both antennas are 5.2 meters above ground.
At typical height of thermostat, antenna 1.52 meters (5 feet) above ground.
TX= +8 dBm, 640 meters at 125 Kbps.
TX= +8 dBm, 390 meters at 1 Mbps.
Note: Range of BT832X is measured with antenna at 2.1 meters above ground. With 1170 meter range, BT832X Bluetooth signals can penetrate more walls than BT840F with 2300 meter range at 5.2 meter height. Multiple path interference can reduce range significantly.
Certifications for Bluetooth and IEEE 802.15.4
FCC ID: X8WBT840F
IC (Industrial Canada) ID: 4100A-BT840F
Europe: Compliant
Australia and New Zealand: RCM compliant
Japan: TELEC 201-190710/00
Korea KCC: R-C-F8A-BT840
Taiwan NCC: NCC-RCB-AN
Brazil ANTEL: 03583-22-14656
QDID: 108621
