nRF24E1 Nordic VLSI, nRF24E1 Datasheet - Page 20

• Manufacturer Part Number: nRF24E1
• Description: 2.4Ghz RF Transceiver With Embedded 8051 Compatible Microcontroller And 9 Input, 10 Bit ADC
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
The device functionality in these modes is decided by the content of a configuration
word. This configuration word is presented in the configuration section. Please note
that Direct mode is not supported, as this will require a more powerful CPU than
8051.
The ShockBurst™ technology uses on-chip FIFO to clock in data at a low data rate
and transmit at a very high rate thus enabling extremely power reduction.
When operating the nRF2401 subsystem in ShockBurst™, you gain access to the high
data rates (1 Mbps) offered by the 2.4 GHz band without the need of a costly, high-
speed microcontroller (MCU) for data processing.
By putting all high speed signal processing related to RF protocol on-chip, the
nRF24E1 offers the following benefits:
The nRF2401 subsystem can be programmed using a simple 3-wire interface where
the data rate is decided by the speed of the CPU.
By allowing the digital part of the application to run at low speed while maximizing
the data rate on the RF link, the ShockBurst™ mode reduces the average current
consumption in applications considerably.
4.2.3.1 ShockBurst™ principle
When the nRF2401 subsystem is configured in ShockBurst™, TX or RX operation is
conducted in the following way (10 kbps for the example only).
Figure 4-2Clocking in data with CPU and sending with ShockBurst technology
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.0
Highly reduced current consumption
Lower system cost (facilitates use of less expensive microcontroller)
Greatly reduced risk of ‘on-air’ collisions due to short transmission time
10 kbps effective
QhtrÃ!ÂsÃ(&
FIFO
ShockBurst
TM
July 2003
1Mbps