SI4031-B1-FM Silicon Laboratories Inc, SI4031-B1-FM Datasheet - Page 16

• Manufacturer Part Number: SI4031-B1-FM
• Description: IC TX 240-930MHZ -8-13DB 20VQFN
• Manufacturer: Silicon Laboratories Inc
• Type: ISM Transmitterr

Specifications of SI4031-B1-FM

• Package / Case: 20-VQFN
• Frequency: 240MHz ~ 930MHz
• Applications: General Purpose
• Modulation Or Protocol: FSK, GFSK, OOK
• Data Rate - Maximum: 256 kbps
• Power - Output: 13dBm
• Current - Transmitting: 30mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 1.8 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Operating Frequency: 240 MHz to 930 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 1.8 V to 3.6 V
• Supply Current: 30 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Si4030/31/32-B1
The SPI interface contains a burst read/write mode which allows for reading/writing sequential registers without
having to re-send the SPI address. When the nSEL bit is held low while continuing to send SCLK pulses, the SPI
interface will automatically increment the ADDR and read from/write to the next address. An example burst write
transaction is illustrated in Figure 3 and a burst read in Figure 4. As long as nSEL is held low, input data will be
latched into the Si4030/31/32 every eight SCLK cycles.
16
SDO
SCLK
nSEL
SCLK
nSEL
SDI
SDI
First Bit
First Bit
RW
RW
=1
=0
SDO
SCLK
nSEL
SDI
A6
A6
A5
A5
First Bit
A4
A4
RW
=0
A3
A3
A6
A2
A2
Figure 3. SPI Timing—Burst Write Mode
Figure 4. SPI Timing—Burst Read Mode
A5
Figure 2. SPI Timing—READ Mode
A1
A1
A4
First Bit
A0
A0
A3
D7
=X
D7
D7
=X
A2
D6 D5 D4 D3
D6
=X
D6
=X
A1
D5
=X
D5
=X
First Bit
A0
Rev 1.1
D4
=X
D4
=X
D7
D7
=X
D3
=X
D3
=X
D6 D5 D4 D3
D6
=X
D2
=X
D2
=X
D2 D1 D0
D5
=X
Last Bit
D1
=X
D1
=X
D4
=X
D0
=X
D0
=X
D3
=X
D7
=X
D7 D6 D5 D4 D3
D2
=X
D2 D1 D0
D6
=X
D1
=X
D5
=X
Last Bit
D0
=X
Last Bit
D4
=X
D3
=X
D2
=X
D2 D1 D0
D1
=X
Last Bit
D0
=X