PRODUCT SPECIFICATION 2.4GHz RF transceiver with nRF24E1 embedded 8051 compatible microcontroller and 9 input, 10 bit ADC FEATURES APPLICATIONS nRF2401 2.4GHz RF transceiver Wireless gamepads 8051 compatible microcontroller Wireless headsets compatible with nRF24E2 Wireless keyboards 9 input 10 bit ADC 100kSPS Wireless mouse Single 1.9V to 3.6V supply Wireless toys Internal voltage regulators Intelligent sports equipment 2 A standby with wakeup on Industrial sensors timer or external pin PC peripherals Internal VDD monitoring Phone peripherals Supplied in 36 pin QFN (6x6mm) Tags package Alarms 0.18m CMOS technology Remote control Mask programmable version available Low Bill of Material Ease of design Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989 Revision: 1.3 Page 1 of 107 March 2006 PRODUCT SPECIFICATION nRF24E1 2.4 GHz Radio Transceiver with Microcontroller TABLE OF CONTENT 1 GENERAL DESCRIPTION...................................................................................4 1.1 Quick Reference Data.......................................................................................4 1.2 Block Diagram..................................................................................................5 1.3 Pin Diagram......................................................................................................6 1.4 Glossary of Terms.............................................................................................8 2 ARCHITECTURAL OVERVIEW.........................................................................9 2.1 Microcontroller.................................................................................................9 2.2 PWM...............................................................................................................10 2.3 SPI..................................................................................................................10 2.4 Port Logic.......................................................................................................11 2.5 Power Management........................................................................................11 2.6 RTC Wakeup Timer, Watchdog and RC Oscillator .......................................11 2.7 XTAL Oscillator.............................................................................................11 2.8 AD Converter.................................................................................................11 2.9 Radio Transceiver...........................................................................................12 3 I/O PORTS............................................................................................................13 3.1 I/O port behavior during RESET....................................................................13 3.2 Port 0 (P0).......................................................................................................13 3.3 Port 1 (P1 or SPI port) ....................................................................................14 4 nRF2401 2.4GHz TRANSCEIVER SUBSYSTEM .............................................18 4.1 RADIO port (Port 2).......................................................................................18 4.2 Modes of operation.........................................................................................20 4.3 Device configuration......................................................................................26 4.4 Data package Description ...............................................................................34 4.5 Important RF Timing Data .............................................................................35 5 A/D CONVERTER...............................................................................................40 5.1 A/D converter subsystem block diagram........................................................41 5.2 A/D converter registers...................................................................................41 5.3 A/D converter usage .......................................................................................42 5.4 A/D Converter timing.....................................................................................44 5.5 Analog interface guidelines ............................................................................45 6 PWM.....................................................................................................................46 7 INTERRUPTS.......................................................................................................47 7.1 Interrupt SFRs.................................................................................................47 7.2 Interrupt Processing........................................................................................50 7.3 Interrupt Masking...........................................................................................51 7.4 Interrupt Priorities...........................................................................................51 7.5 Interrupt Sampling..........................................................................................52 7.6 Interrupt Latency.............................................................................................52 7.7 Interrupt Latency from Power Down Mode....................................................52 7.8 Single-Step Operation.....................................................................................52 8 WAKEUP TIMER AND WATCHDOG ..............................................................53 8.1 Tick calibration...............................................................................................53 8.2 RTC Wakeup timer.........................................................................................54 Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989 Revision: 1.3 Page 2 of 107 March 2006