Overview 
							
	Built around a 32-bit ARM® Cortex™ M0 CPU, Nordic Semiconductor's nRF51422 is the first-ever system on chip (SoC) solution to support the ANT protocol. The device now comes unprogrammed, ready for loading with Nordic's available SoftDevice protocols stacks and the developer's application. The S210 ANT 8-channel protocol stack and the S310 ANT 8-channel / Bluetooth low energy peripheral protocol stack are both available as downloadable SoftDevices from Nordic's website.
	The nRF51422 incorporates a rich selection of analog and digital peripherals that can interact without CPU intervention through the Programmable Peripheral Interface (PPI) system. A flexible 31-pin GPIO mapping scheme allows I/O such as serial interfaces, PWM and quadrature demodulator to be mapped to any device pin as dictated by PCB requirements. This enables complete design flexibility associated with pin-out location and function.
	The nRF51422 is available in a 48-pin 6x6 QFN package in a 256kB and 128kB flash configuration. The 256kB flash version is also available in 3.5x3.8mm 64 ball WLCSP packages. 
							
							
																	Manufacturer's Product Page  
						
							
							
							
								
	Key Enhancements  
	
		Supports programmable SoftDevice protocol stacks for easy access to new features and improvements
		
			
				S210 ANT 8-channel stack 
			
				S310 ANT / Bluetooth low energy peripheral stack 
		 
	 
	
		ANT Burst transfer rate up to 60Kbps (true data throughput)  
	
		Up to 8 public, managed and/or private ANT network keys  
	
		AES-128 data encryption option for ANT data transfers  
 
	Advanced ANT Features: 
	
		 Individual output power control per channel  
	
		Channel ID management – improve device pairing efficiency  
	
		Low priority search – does not impact existing channels  
	
		Scanning mode – extremely low latency for asynchronous applications such as remote control  
	
		Proximity search  
	
		Frequency agility  
	
		High density node support – up to 300 nodes at 1 Hz Tx rate in same RF space  
 
	ANT Basics: 
	
		78 selectable RF channels 
	
		Up to 8 independent ANT channels 
	
		Broadcast, acknowledged or burst data transfer 
	
		8 byte data payload per message 
	
		Minimum message rate per ANT channel 0.5Hz 
	
		ANT channel combined message rate up to 190Hz (TBD) 
 
	Hardware Features 
	
		Single chip, highly flexible, 2.4GHz multi-protocol device 
	
		32-bit ARM Cortex M0 CPU core 
	
		256KB or 128KB flash options; 16KB RAM 
	
		Thread-safe and run-time protected 
	
		+4dBm to -20dBm output power 
	
		PPI system for maximum power-efficient applications and code simplification 
	
		Flexible power management features 
	
		Configurable I/O mapping for analog and digital I/O 
 
	Ultra low power consumption 
	
		6.3mA - TX at -4dBm (3V using on-chip DC-DC) 
	
		8.1mA - TX at 0dBm (3V using on-chip DC-DC) 
	
		9.5mA – RX (3V using on-chip DC-DC) 
	
		8mA - TX at -4dBm(No DCDC) 
	
		10.5mA - TX at 0dBm(No DC-DC) 
	
		13mA - RX at 1Mbps 
	
		420nA - Sleep, no RAM retention 
	
		530nA - 8k RAM retention 
	
		2µA - All peripherals in idle mode 
 
	2.4GHz Radio 
	
		+4dBm to -20dBm output power 
	
		-96dBm RX sensitivity at 250kbs 
	
		-90dBm RX sensitivity at 1Mbps 
	
		-85dBm RX sensitivity at 2Mbps 
	
		2Mbps/1Mbps/250kbps programmable on air data rate 
	
		Excellent co-existence performance 
	
		Compatible with 16MHz ± 40ppm crystal 
 
	CPU 
	
		32-bit ARM® Cortex™ M0 32-bit CPU 
 
	Memory 
	
		256KB / 128KB embedded flash options 
	
		16KB RAM 
 
	System Peripherals 
	
		3 x 16/24-bit timers with counter mode 
	
		16 channel CPU independent Programmable Peripheral Interconnect (PPI) 
	
		Encryption -128-bit AES ECB/CCM/AAR co-processor 
	
		RNG 
	
		RTC 
	
		Temperature sensor 
 
	GPIO 
	
		Flexible GPIO pin configuration 
	
		31 GPIO 
	
		Up to 4 PWM 
 
	Digital I/O 
	
		Digital interfaces -SPI Master, 2-wire, UART 
	
		Quadrature decoder 
 
	Analog I/O 
	
		8/9/10 bit ADC - 8 configurable channels 
 
	Oscillators 
	
		16MHz XO 
	
		16MHz RCOSC 
	
		32HHx XO 
	
		32kHz RCOSC 
 
	Power Management 
	
		Wide supply voltage range (1.8v to 3.6V) 
	
		Flexible power management scheme 
	
		On-chip DC/DC converter 
	
		420nA @ 3V OFF mode 
	
		2.5µA @ 3V ON mode, all blocks in idle mode 
	
		530nA @ 3V OFF mode + 1 region RAM retention 
 
	 
	For the Nordic Semiconductor's product specification, reference design and other technical documents, please download from here . 
	For more ANT resources, please click here . 
																			
											
												
													Title 
													Date Modified 
													Version 
													File Size 
												 
											 
											
											
												
																										
														ANT Message Protocol and Usage Mar 27, 2025 
														5.1 
														3 MB 
													 
																									
											
												
																																								
														ANTware II Nov 12, 2013 
														4.1.00 
														1 MB 
													 
																																							
											
												
																																								
														ANTware II Users Guide Mar 27, 2025 
														1.2 
														2 MB 
													 
																																							
											
											 
										
																	    1. Initial Setup 
    
        
            ANT Product
                Select One 
                AP1 chip or module 
                AT3 chipset or module 
                AP2 chip or module 
                CC257x chip or module 
                nRF51422 SoC 
                nRF52832 SoC 
              
        
        
            
     
    
    
        
            Serial Mode                                    
                Select One 
                Asynchronous 
                Synchronous  
             
        
        
            
     
    
    
        
            Encyption Mode
                Not Encrypted 
                Encrypted  
             
        
        
            
     
    
    
        Baud Rate 
     
    
        Mode
            Byte 
            Bit 
          
     
    
    
    2. Channel Data 
    
        Number of Channels
            Select One 
          
     
    
    
    
    
    
    
    
    
    
    3. Battery Information 
    
        
            Typical Batteries
                Select One 
                2032 Coin Cell 
                2430 Coin Cell 
                2450 Coin Cell 
                AAA Alkaline 
                AA Alkaline 
                9V Alkaline 
              
        
        
     
    
    
        
        
     
    
    
    Estimate 
    
    Results 
    
    
        Total Average Current:  Base Current:  
    
    
    
    
        Battery Life in Days:  
 
    
        Channel   
        Rev. Data Type:  
        Average Current: