nRF2402 Nordic VLSI, nRF2402 Datasheet - Page 11

• Manufacturer Part Number: nRF2402
• Description: NRF2402 Single Chip 2.4GHz Radio Transmitter
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
In direct mode the nRF2402 works like a traditional RF device. Data must be at
1Mbps, or 250kbps for the receiver (nRF2401/nRF24E1) to detect the signals.
MCU interface pins: CE, DIN
In configuration mode a configuration word of up to 20 bits is downloaded to
nRF2402. This is done through a simple 3-wire interface (CS, CLK and DIN). For
more information on configuration please refer to the nRF2402. Device configuration
chapter, page12.
Power down mode is used to achieve very low current consumption. Effectively the
chip is disabled with minimal leakage current consumption, typically less than 200nA.
Operating in this mode when not transmitting data significantly increases battery
lifetime.
Stand by mode is used to achieve low current consumption. In this mode only a part
of the crystal oscillator is running (12 A) to guarantee a short start-up time. Operating
in this mode when not transmitting data increases battery lifetime while keeping start
up delays short.
Nordic VLSI ASA
Revision: 1.0
CLK not used in direct mode.
Power down
Stand by
Configuration
TX ShockBurst™
TX Direct
1. When application MCU has data to send, set CE high
2. The nRF2402 RF front end is now immediately activated, and after 200 s
3. All RF protocol parts must hence be implemented in MCU firmware
Pin Name
settling time, data will modulate the carrier directly.
(preamble, address and CRC).
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Vestre Rosten 81, N-7075 Tiller, Norway
Table 7 Pin configuration of nRF2402.
0
1
1
1
1
0
0
0
1
1
Page 11 of 25
X
0
1
0
0
-
Phone [phone]
Set to 0
CLK
CLK
X
X
-
CONFIG DATA
TX DATA
TX DATA
Fax [phone]
X
X
August 2003