User's Manual

2
1.2. Features
‧Multi-protocol 2.4GHz radio
‧32-bit ARM Cortex – M4F processor
‧512KB flash programmed memory and 64KB RAM
‧Software stacks available as downloads
‧Application development independent from protocol stack
‧On-air compatible with nRF51, nRF24AP and nRF24L series
‧Programmable output power from +4dBm to -20dBm
‧RSSI
‧RAM mapped FIFOs using EasyDMA
‧Dynamic on-air payload length up to 256 bytes
‧Flexible and configurable 32 pin GPIO
‧Programmable peripheral interface - PPI
‧Simple ON / OFF global power mode
‧Full set of digital interface all with Easy DMA including:
‧3 x Hardware SPI master ; 3 x Hardware SPI slave
‧2 x two-wire master ; 2 x two-wire slave
‧1 x UART (CTS / RTS)
‧PDM for digital microphone
‧I2S for audio
‧Quadrature demodulator
‧12-bit / 200KSPS ADC
‧128-bit AES ECB / CCM / AAR co-processor
‧Lowe cost external crystal 32MHz ± 40ppm for Bluetooth ; ± 50ppm for ANT Plus
‧Lowe power 32MHz crystal and RC oscillators
‧Wide supply voltage range 1.7V to 3.6V
‧On-chip DC/DC buck converter
‧Individual power management for all peripherals
‧Timer counter
‧5 x 32-bit
‧3 x 24-bit RTC
‧NFC-A tag interface for OOB pairing