NRF2401 Просмотр технического описания (PDF) - Unspecified
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NRF2401 Datasheet PDF : 37 Pages
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PRODUCT SPECIFICATION
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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 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 micro
controller (MCU) for data processing.
By putting all high speed signal processing related to RF protocol on-chip, the
nRF2401 offers the following benefits:
• Highly reduced current consumption
• Lower system cost (facilitates use of less expensive micro controller)
• Greatly reduced risk of ‘on-air’ collisions due to short transmission time
The nRF2401 can be programmed using a simple 3-wire interface where the data rate
is decided by the speed of the micro controller.
By allowing the digital part of the application to run at low speed while maximizing
the data rate on the RF link, the nRF ShockBurst™ mode reduces the average current
consumption in applications considerably.
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When the nRF2401 is configured in ShockBurst™, TX or RX operation is conducted
in the following way (10 kbps for the example only).
ELW
0&8
Continuous 10kbps
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FIFO
ShockBurstTM 1Mbps
Figure 4 Clocking in data with MCU and sending with ShockBurst™ technology
Without ShockBurstTM, running at speed dictated by 10Kbs MCU
10mA periode
10mA period 10Kbs MCU with ShockBurstTM
0
20
40
60
80
100 120 140 160 180 200 220 240
Time mS
Figure 5 Current consumption with & without ShockBurst™ technology
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989
Revision: 1.0
Page 9 of 37
March 2003
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