SI4330-B1-FMR Silicon Laboratories Inc, SI4330-B1-FMR Datasheet - Page 49

• Manufacturer Part Number: SI4330-B1-FMR
• Description: IC RX ISM 240-960MHZ 20VQFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4330-B1-FMR

• Frequency: 240MHz ~ 960MHz
• Sensitivity: -121dBm
• Data Rate - Maximum: 256 kbps
• Modulation Or Protocol: FSK, GFSK, OOK
• Applications: Remote Control, RKE, Security Systems
• Current - Receiving: 18.5mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Features: RSSI Equipped
• Voltage - Supply: 1.8 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-VQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -

8.8. GPIO Configuration
Three general purpose IOs (GPIOs) are available. Numerous functions such as specific interrupts, Antenna
Diversity Switch control, Microcontroller Output, etc. can be routed to the GPIO pins as shown in the tables below.
When in Shutdown mode all the GPIO pads are pulled low.
Note: The ADC should not be selected as an input to the GPIO in Standby or Sleep Modes and will cause excess current con-
The GPIO settings for GPIO1 and GPIO2 are the same as for GPIO0 with the exception of the 00000 default
setting. The default settings for each GPIO are listed below:
This application uses antenna diversity so a GPIO is used to control the antenna switch. For a complete list of the
available GPIO's see “AN4670: Si4330 Register Descriptions.”
The GPIO drive strength may be adjusted with the gpioXdrv[1:0] bits. Setting a higher value will increase the drive
strength and current capability of the GPIO by changing the driver size. Special care should be taken in setting the
drive strength and loading on GPIO2 when the microcontroller clock is used. Excess loading or inadequate drive
may contribute to increased spurious emissions.
Add R/W Function/Des
0B
0C
0D
0E
sumption.
R/W
R/W
R/W
R/W
Configuration
Configuration
Configuration
Configuration
cription
I/O Port
GPIO0
GPIO1
GPIO2
gpio0drv[1] gpio0drv[0]
gpio1drv[1] gpio1drv[0]
gpio2drv[1] gpio2drv[0]
D7
GPIO0
GPIO1
GPIO2
GPIO
extitst[2]
D6
extitst[1] extitst[0]
pup0
pup1
pup2
Rev 1.0
D5
00000—Default Setting
Microcontroller Clock
gpio0[4] gpio0[3] gpio0[2] gpio0[1] gpio0[0]
gpio1[4] gpio1[3] gpio1[2] gpio1[1] gpio1[0]
gpio2[4] gpio2[3] gpio2[2] gpio2[1] gpio2[0]
POR Inverted
D4
POR
itsdo
D3
dio2
D2
dio1
D1
Si4330-B1
dio0
D0
POR Def.
00h
00h
00h
00h
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