SI4431-A0-FM Silicon Laboratories Inc, SI4431-A0-FM Datasheet - Page 91

• Manufacturer Part Number: SI4431-A0-FM
• Description: IC TXRX ISM 930MHZ 3.6V 20-QFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4431-A0-FM

• Package / Case: 20-QFN
• Mfg Application Notes: Transitioning SI4430/31 to Rev B
• Frequency: 240MHz ~ 930MHz
• Data Rate - Maximum: 128kbps
• Modulation Or Protocol: FSK, GFSK, OOK
• Power - Output: 13dBm
• Sensitivity: -118dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 18.5mA
• Current - Transmitting: 28mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Number Of Receivers: 2
• Number Of Transmitters: 1
• Wireless Frequency: 240 MHz to 930 MHz
• Output Power: 13 dBm
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 28 mA
• Minimum Operating Temperature: - 40 C
• Modulation: FSK, GFSK, OOK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 336-1633-5

Register 07h. Operating Mode and Function Control 1
Reset value = 00000001
Name
Type
Bit
Bit
7
6
5
4
3
2
1
0
swres
x32ksel
R/W
Name
D7
swres
enlbd
enwt
pllon
txon
rxon
xton
Software Register Reset Bit.
This bit may be used to reset all registers simultaneously to a DEFAULT state, without the
need for sequentially writing to each individual register. The RESET is accomplished by
setting swres = 1. This bit will be automatically cleared.
Enable Low Battery Detect.
When this bit is set to 1 the Low Battery Detector circuit and threshold comparison will be
enabled.
Enable Wake-Up-Timer.
Enabled when enwt = 1. If the Wake-up-Timer function is enabled it will operate in any
mode and notify the microcontroller through the GPIO interrupt when the timer expires.
32,768 kHz Crystal Oscillator Select.
0:
1:
TX on in Manual Transmit Mode.
Automatically cleared in FIFO mode once the packet is sent. Transmission can be
aborted during packet transmission, however, when no data has been sent yet, transmis-
sion can only be aborted after the device is programmed to “unmodulated carrier” ("Reg-
ister 71h. Modulation Mode Control 2").
RX on in Manual Receiver Mode.
Automatically cleared if Multiple Packets config. is disabled and a valid packet received.
TUNE Mode (PLL is ON).
When pllon = 1 the PLL will remain enabled in Idle State. This will for faster turn-around
time at the cost of increased current consumption in Idle State.
READY Mode (Xtal is ON).
enlbd
R/W
D6
RC oscillator
32 kHz crystal
enwt
R/W
D5
Preliminary Rev. 0.4
x32ksel
R/W
D4
Function
txon
R/W
D3
rxon
R/W
D2
pllon
R/W
D1
Si4431
xton
R/W
D0
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