Data Sheet

LC840PA
Datasheet
https://www.lairdconnect.com
7
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Categories/Feature
Implementation
NFC
NFC-A Listen mode compliant
Based on NFC forum specification
▪ 13.56 MHz
▪ Date rate 106 kbps
▪ NFC Type 2 and Type 4 emulation
Modes of Operation:
▪ Disable
▪ Sense
▪ Activated
Use Cases:
▪ Touch-to-Pair with NFC
▪ NFC enabled out of band (OOB) pairing
System Wake-On-Field function
Proximity Detection
Host Interfaces and Peripherals
Total
46 x multifunction I/O lines
UART
▪ 2 UARTs
▪ Tx, Rx, CTS, RTS
▪ DCD, RI, DTR, DSR (See Note 3 in the Module Specification Notes)
▪ Default 115200, n, 8, 1
▪ From 1,200 bps to 1 Mbps
USB
▪ USB 2.0 FS (Full Speed, 12 Mbps)
▪ CDC driver/virtual UART (baud rate TBD)
GPIO
Up to 46, with configurable:
▪ I/O direction
▪ O/P drive strength (standard 0.5 mA or high 3mA/5 mA),
▪ Pull-up/pull-down
▪ Input buffer disconnect
ADC
▪ Eight 8/10/12-bit channels
0.6 V internal reference
▪ Configurable 4, 2, 1, 1/2, 1/3, 1/4, 1/5 1/6 (default) pre-scaling
▪ Configurable acquisition time 3uS, 5uS, 10uS (default), 15uS, 20uS, 40uS.
▪ One-shot mode
PWM Output
PWM outputs on 16 GPIO output pins.
▪ PWM output duty cycle: 0%-100% (per frequency)
▪ PWM output frequency: Up to 500 kHz
FREQ Output
FREQ outputs on 16 GPIO output pins.
▪ FREQ output frequency: 0 MHz to 4 MHz (50% duty cycle per frequency)
I2C
Two I2C interface (up to 400 kbps) – See Note 4 in the Module Specification Notes
SPI
Four SPI Master Slave interface (up to 4 Mbps)
QSPI
▪ One 32-MHz QSPI interface. Gives XIP (execute in place) capability
▪ External serial flash IC must be fitted as per Nordic specifications
Temperature Sensor
▪ One temperature sensor
▪ Temperature range equal to the operating temperature range
▪ Resolution 0.25 degrees
RSSI Detector
▪ One RF received signal strength indicator
▪ ±2 dB accuracy (valid over -101 dBm to -31 dBm) – added 11 dB LNA gain
▪ 1 dB resolution