Data Sheet

LC840PA
Datasheet
https://www.lairdconnect.com
5
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1 OVERVIEW AND KEY FEATURES
The LC840PA module firmware (Laird Connectivity ProFLEX-like firmware) only supports 2405–2480 MHz IEEE
802.15.5-2006 radio transceiver, 250kbps operation. All references to Bluetooth Low Energy (Bluetooth LE), NFC
and smartBASIC firmware in this LC840PA datasheet are to be ignored. The standard BL654PA module comes
with smartBASIC firmware which supports Bluetooth Low Energy (Bluetooth LE) and NFC.
Every LC840PA module is designed to simplify OEMs enablement of Thread (IEEE 802.15.4) applications to small,
portable, highly power-conscious devices. The LC840PA provides engineers with considerable design flexibility in
both hardware and software programming capabilities.
Based on the world-leading Nordic Semiconductor nRF52840 chipset, the LC840PA modules provide
ultra-low power consumption with outstanding wireless range via +18 dBm of transmit power and the
Long Range (CODED PHY) Bluetooth 5 feature (Bluetooth LE only). New circuitry both increases TX
power and decreases sleep current for impeccable power management. The LC840PA is programmable
via AT commands and Laird’s smartBASIC language (Bluetooth LE only).
smartBASIC is an event-driven programming language that is highly optimized for memory-constrained
systems such as embedded modules. It was designed to make Bluetooth LE development quicker and
simpler, vastly cutting down time to market.
Note: LC840PA hardware provides all functionality of the nRF52840 chipset used in the module design. This is a hardware
datasheet only – it does not cover the software aspects of the LC840PA.
For customers using smartBASIC, refer to the smartBASIC extensions guide (available from the BL654PA product
page of the Laird website. smartBASIC functions and capabilities can only be realized through the use of a suitable
smartBASIC application running on the module. Laird smartBASIC functionality is only available in conjunction with
the Bluetooth LE stack firmware. The ProFLEX (IEEE 802.15.4) firmware does not support any smartBASIC
capabilities. When referencing ProFLEX functionality, sections explaining Bluetooth LE and smartBASIC operation
can be disregarded and are indicated by grayed-out text.
1.1 Features and Benefits
▪ Bluetooth v5.1 – Single mode
▪ NFC
▪ IEEE 802.15.4:2006 (Thread) radio support (ProFLEX FW)
▪ External or internal antennas
▪ Multiple programming options (for Bluetooth LE)
– smartBASIC
– AT command set
▪ Programmable Tx power +18 dBm to -6 dBm, -26 dBm
– LE Coded max Tx is +14 dBm
▪ Bluetooth LE Rx sensitivity – -98.5 dBm (1 Mbps), - 107
dBm (125 kbps)
▪ IEEE 802.15.4:2006 Rx sensitivity – -103.5 dBm (250kbps)
▪ Ultra-low power consumption
▪ Tx @ +18 dBm– 102.2 mA peak (at 18 dBm, DCDC on)
(See Note 1 in the Power Consumption section)
▪ Rx: 10.9 mA peak (DCDC on)
(See Note 1 in the Power Consumption section)
▪ Standby Doze – 5.9 uA typical
▪ Deep Sleep – 2.0 uA – (See Note 4 in the Power
Consumption section)
▪ UART, GPIO, ADC, PWM, FREQ output, timers,
I2C, SPI, I2S, PDM, and USB interfaces
▪ Fast time-to-market
▪ FCC, ISED, AS/NZS, and Korea-certified for
Bluetooth LE operation
▪ FCC, ISED for IEEE 802.15.4 operation
▪ Full Bluetooth Declaration ID
▪ Other regulatory certifications on request
▪ No external components required
▪ Industrial temperature range (-40° C to +85° C)
▪ Compact footprint
1.2 Application Areas
▪ Medical devices
▪ IoT Sensors
▪ Factory Automation
▪ HVAC Controllers
▪ Location awareness
▪ Home automation