SI4431-A0-FM Silicon Laboratories Inc, SI4431-A0-FM Datasheet - Page 55
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SI4431-A0-FM
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SI4431-A0-FMR
Manufacturer:
SILICON
Quantity:
3 500
Part Number:
SI4431-A0-FMR
Manufacturer:
SILICONLABS/芯科
Quantity:
20 000
8. Auxiliary Functions
8.1. Smart Reset
The Si4431 contains an enhanced integrated SMART RESET or POR circuit. The POR circuit contains both a
classic level threshold reset as well as a slope detector POR. This reset circuit was designed to produce reliable
reset signal in any circumstances. Reset will be initiated if any of the following conditions occur:
The reset will initialize all registers to their default values. The reset signal is also available for output and use by
the microcontroller by using the default setting for GPIO_0. The inverted reset signal is available by default on
GPIO_1.
Initial power on, when VDD starts from 0V: reset is active till VDD reaches V
When VDD decreases below V
A software reset via “Register 08h. Operating Mode and Function Control 2,” on page 92: reset is active for time
T
On the rising edge of a VDD glitch when the supply voltage exceeds the following time functioned limit:
Release Reset Voltage
Power-On VDD Slope
Low VDD Limit
Software Reset Pulse
Threshold Voltage
Reference Slope
VDD Glitch Reset Pulse
SWRST
Parameter
VDD starts to rise
0.4V
LD
Figure 23. POR Glitch Parameters
TSWRST
for any reason: reset is active till VDD reaches V
Symbol
SVDD
VTSD
VRR
VDD(t)
VLD
TP
k
Table 22. POR Parameters
t=0,
Preliminary Rev. 0.4
VDD nom.
Also occurs after SDN, and
VLD<VRR is guaranteed
tested VDD slope region
initial power on
reset:
Vglitch>=0.4+t*0.2V/ms
Comment
showing glitch
actual VDD(t)
Reset
0.4V+t*0.2V/ms
T
P
reset limit:
RR
t
0.85
0.03
Min
0.7
50
(see table);
5
RR
again;
Typ
1.3
0.4
0.2
15
1
Max
1.75
300
470
1.3
40
Si4431
V/ms
V/ms
Unit
ms
us
V
V
V
55