RFM70-D QUASAR, RFM70-D Datasheet - Page 6

• Manufacturer Part Number: RFM70-D
• Description: MODULE, TRANSCEIVER, DIP, 2.4GHZ
• Manufacturer: QUASAR

Specifications of RFM70-D

• Modulation Type: GFSK
• Data Rate Max: 2Mbps
• Frequency Range: 2.4GHz To 2.527GHz
• Sensitivity: -85dBm
• Supply Voltage Range: 1.9V To 3.6V
• Supply Current: 23mA
• Interface Type: SPI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4
4.1
State Control
Pin signal: VDD, CE
SPI register:
EN_AA, NO_ACK, ARC, ARD
System information: Time out, ACK
received, ARD elapsed, ARC_CNT, TX
FIFO empty, ACK packet transmitted,
Packet received
State Control Diagram
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RX
Time out or ACK received
PWR_UP,
Figure 3 PTX (PRIM_RX=0) state control diagram
PRIM_RX,
PWR_UP=1
Power Down
Standby-II
Standby-I
VDD>=1.9 V
NO_ACK=0
EN_AA=1
CE=0
PWR_UP=0
RFM70 has built-in state machines that
control the state transition between different
modes.
When auto acknowledge feature is disabled,
state transition will be fully controlled by
MCU.
TX FIFO empty
ARD elapsed and ARC_CNT<ARC
Data Ready
CE=0
TX FIFO
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CE=1
RFM70
TX
V1.0
6