SI4431-A0-FM Silicon Laboratories Inc, SI4431-A0-FM Datasheet - Page 102

• 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 14h. Wake-Up Timer Period 1
Register 15h. Wake-Up Timer Period 2
Register 16h. Wake-Up Timer Period 3
Si4431
Note: If a new configuration is needed (e.g., for the WUT or the LDC), proper functionality is required. The
Reset value = xxx00011
Reset value = 00000000
Reset value = 00000001
102
Name
*Note: The period of the wake-up timer can be calculated as T
Name
*Note: The period of the wake-up timer can be calculated as T
Name
*Note: The period of the wake-up timer can be calculated as T
Type
Type
Type
Bit
Bit
Bit
7:5
4:0
7:0
7:0
Bit
Bit
Bit
function must first be disabled, then the settings changed, then enabled back on.
maximum value for R is decimal 20. A value greater than 20 will result in the same as if 20 was written.
Reserved
wtm[15:8]
wtm[7:0]
wtr[4:0]
Name
Name
Name
D7
D7
D7
Reserved
Reserved.
Wake Up Timer Exponent (R) Value*.
Maximum value for R is decimal 20. A value greater than 20 will yield a result as if 20
were written. R Value = 0 can be written here.
Wake Up Timer Mantissa (M) Value*.
Wake Up Timer Mantissa (M) Value*.
M[7:0] = 0 is not valid here. Write at least decimal 1.
R/W
D6
D6
D6
D5
D5
D5
Preliminary Rev. 0.4
D4
D4
D4
wtm[15:8]
wtm[7:0]
WUT
WUT
WUT
R/W
R/W
= (4 x M x 2
= (4 x M x 2
= (4 x M x 2
Function
Function
Function
D3
D3
D3
R
R
R
) / 32.768 ms. R = 0 is allowed, and the
) / 32.768 ms.
) / 32.768 ms.
wtr[4:0]
R/W
D2
D2
D2
D1
D1
D1
D0
D0
D0