NRF905 NORDIC SEMICONDUCTOR, NRF905 Datasheet - Page 13

• 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
Main office: Nordic Semiconductor ASA
Revision: 1.4
AM is set low
Sensing for incomming data
NO
NO
CD is set high if carrier
Radio in Standby
PWR_UP = HI
TX_EN = LO
powered up
Receiver is
DR high is
Receiving
AM is set
TRX_CE
Receiver
TRX_CE
set high
ADDR?
Correct
Correct
Figure 4 Flowchart ShockBurst
= HI ?
CRC?
= HI ?
high
data
YES
YES
YES
YES
NO
NO
MCU clocks out payload via
- Vestre Rosten 81, N-7075 Tiller, Norway
the SPI interface
DR and AM are
RX Remains
set low
On
Page 13 of 42
Data Package
amble
Pre-
TM
receive of nRF905.
MCU clocks out payload via
ADDR
the SPI interface
DR and AM are
Radio enters
set low
STBY
- Phone [phone] -Fax [phone]
PAYLOAD
PAYLOAD
CRC
June 2006