SI4431-A0-FM Silicon Laboratories Inc, SI4431-A0-FM Datasheet - Page 96

• 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 0Ch. GPIO Configuration 1
Si4431
Reset value = 00000000
96
Name
Type
Bit
7:6
4:0
Bit
5
gpiodrv1[1:0] GPIO Driving Capability Setting.
gpio1[4:0]
Name
pup1
D7
gpiodrv1[1:0]
R/W
Pullup Resistor Enable on GPIO1.
When set to 1 the a 200 kresistor is connected internally between VDD and the pin if the
GPIO is configured as a digital input.
GPIO1 pin Function Select.
00000:
00001:
00010:
00011:
00100:
00101:
00110:
00111:
01000:
01001:
01010:
01011:
01100:
01101:
01110:
01111:
10000:
10001:
10010:
10011:
10100:
10101:
10110:
10111:
11000:
11001:
11010:
11011:
11100:
11101:
else :
D6
Inverted Power-On-Reset (output)
Wake-Up Timer: 1 when WUT has expired (output)
Low Battery Detect: 1 when battery is below threshold setting (output)
Direct Digital Input
External Interrupt, falling edge (input)
External Interrupt, rising edge (input)
External Interrupt, state change (input)
ADC Analog Input
Reserved (Analog Test N Input)
Reserved (Analog Test P Input)
Direct Digital Output
Reserved (Digital Test Output)
Reserved (Analog Test N Output)
Reserved (Analog Test P Output)
Reference Voltage (output)
TX/RX Data CLK output to be used in conjunction with TX/RX Data pin (output)
TX Data input for direct modulation (input)
External Retransmission Request (input)
TX State (output)
TX FIFO Almost Full (output)
RX Data (output)
RX State (output)
RX FIFO Almost Full (output)
Antenna 1 Switch used for antenna diversity (output)
Antenna 2 Switch used for antenna diversity (output)
Valid Preamble Detected (output)
Invalid Preamble Detected (output)
Sync Word Detected (output)
Clear Channel Assessment (output)
VDD
GND
pup1
R/W
D5
Preliminary Rev. 0.4
D4
Function
D3
gpio1[4:0]
R/W
D2
D1
D0