Document
PRODUCT SPECIFICATION
2.4GHz RF transceiver with embedded
nRF24E1
8051 compatible micro-controller and
9 input, 10 bit ADC
FEATURES
• nRF2401 2.4GHz RF transceiver • 8051 compatible micro-controller • compatible with nRF24E2 • 9 input 10 bit ADC 100kSPS • Single 1.9V to 3.6V supply • Internal voltage regulators • 2 µA standby with wakeup on timer
or external pin • Internal VDD monitoring • Supplied in 36 pin QFN (6x6mm)
package • 0.18µm CMOS technology • Mask programmable version available • Low Bill- of Material • Ease of design
• Wireless gamepads • Wireless headsets • Wireless keyboards • Wireless mouse • Wireless toys • Intelligent sports equipment • Industrial sensors • PC peripherals • Phone peripherals • Tags • Alarms • Remote control
APPLICATIONS
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989
Revision: 1.2
Page 1 of 119
June 2004
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...............................................................................................................11 2.3 SPI...................................................................................................................11 2.4 Port Logic ........................................................................................................12 2.5 Power Management..........................................................................................12 2.6 RTC Wakeup Timer, Watchdog and RC Oscillator...........................................12 2.7 XTAL Oscillator...............................................................................................12 2.8 AD Converter...................................................................................................12 2.9 Radio Transceiver.............................................................................................13 3 I/O PORTS ............................................................................................................14 3.1 I/O port behavior during RESET.......................................................................14 3.2 Port 0 (P0) .......................................................................................................14 3.3 Port 1 (P1 or SPI port).....................................................................................16 4 nRF2401 2.4GHz TRANSCEIVER SUBSYSTEM ................................................20 4.1 RADIO port (Port 2)........................................................................................20 4.2 Modes of operation ..........................................................................................22 4.3 Device configuration..........................................................................................28 4.4 Data package Description.................................................................................41 4.5 Important RF Timing Data.................................................................................42 5 A/D CONVERTER ................................................................................................47 5.1 A/D converter subsystem block diagram............................................................48 5.2 A/D converter registers.....................................................................................48 5.3 A/D converter usage .........................................................................................50 5.4 A/D Converter timing........................................................................................52 5.5 Analog interface guidelines ................................................................................53 6 PWM .....................................................................................................................54 7 INTERRUPTS........................................................................................................55 7.1 Interrupt SFRs..................................................................................................55 7.2 Interrupt Processing.......