NRF905 NORDIC SEMICONDUCTOR, NRF905 Datasheet - Page 11

• Manufacturer Part Number: NRF905
• Description: IC, TRANSCEIVER, 430 928MHZ, SMD
• Manufacturer: NORDIC SEMICONDUCTOR

Specifications of NRF905

• Transmitting Current: 9mA
• Data Rate: 50Kbps
• Frequency Range: 430MHz To 928MHz
• Modulation Type: GFSK
• Sensitivity Dbm: -100dBm
• Rf Ic Case Style: QFN
• No. Of Pins: 32
• Supply Voltage Range: 1.9V To 3.6V
• Output Power: 10dBm
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PRODUCT SPECIFICATION
nRF905 Single Chip 433/868/915 MHz Radio Transceiver
NB: DR is set low under the following conditions after it has been set high:
Main office: Nordic Semiconductor ASA
Revision: 1.4
DR is set high when completed
Generate CRC and preamble
changes since last TX/RX)
NO
uController loading ADDR
(Configuration register if
and PAYLOAD data
nRF ShockBurst TX
SPI - programming
Radio in Standby
Sending package
PWR_UP = HI
TRX_CE = LO
Transmitter is
TX_EN = HI
powered up
TRX_CE
TRX_CE
= HI ?
= HI ?
YES
YES
Figure 3 Flowchart ShockBurst
NO
If TX_EN is set low
If PWR_UP is set low
after pre-
RETRAN
NO
AUTO_
set low
amble
= HI ?
DR is
- Vestre Rosten 81, N-7075 Tiller, Norway
Bit in configuration
register
YES
amble
Pre-
Data Package
Page 11 of 42
ADDR
ADDR
PAYLOAD
TM
PAYLOAD
transmit of nRF905.
CRC
- Phone [phone] -Fax [phone]
June 2006