NRF2402 Datasheet, PDF (10/31 Pages) List of Unclassifed Manufacturers – Single chip 2.4 GHz Transmitter

PRODUCT SPECIFICATION
nRF2402/nRF2402G Single Chip 2.4 GHz Radio Transmitter
ShockBurst™ principle
When the nRF2402/nRF2402G is configured in ShockBurst™, TX operation is conducted in
the following way (10 kbps for this example only).
8-bit
MCU
Continuous 10kbps
nRF2402/
nRF2402G
FIFO
ShockBurst^TM 1Mbps
Fig
ure 5 Clocking in data with MCU and sending with ShockBurst™ technology
Without ShockBurst^TM, running at speed dictated by 10kbps MCU
10mA
periode
10mA periode 10kbps MCU with ShockBurst^TM
0
20
40
60
80
100 120 140 160 180 200 220 240
Time mS
Figure 6 Current consumption with and without ShockBurst™ technology
nRF2402/nRF2402G ShockBurst™ Transmit:
MCU interface pins: CE, CLK, DIN
1. When the application MCU has data to send, set CE high. This activates RF2402
on-board data processing.
2. The address of the receiving node (RX address) and payload data is clocked into
the nRF2402/nRF2402G. The application protocol or MCU sets the speed (ex:
10kbps).
3. MCU sets CE low, this activates a nRF2402/nRF2402G ShockBurst™
transmission.
4. nRF2402/nRF2402G ShockBurst™:
• RF front end is powered up
• RF package is completed (preamble added, CRC calculated)
• Data is transmitted at high speed (250 kbps or 1 Mbps configured by user).
• nRF2402/nRF2402G returns to stand-by when finished
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 2.0
Page 10 of 31
April 2005