SI4021-A1-FT Silicon Laboratories Inc, SI4021-A1-FT Datasheet - Page 27

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SI4021-A1-FT

Manufacturer Part Number
SI4021-A1-FT
Description
IC TX FSK 915MHZ 5.4V 16-TSSOP
Manufacturer
Silicon Laboratories Inc
Datasheet

Specifications of SI4021-A1-FT

Package / Case
16-TSSOP
Frequency
433MHz, 868MHz, 915MHz
Modulation Or Protocol
FSK, OOK
Data Rate - Maximum
512kbps
Power - Output
8dBm
Current - Transmitting
24mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Voltage - Supply
2.2 V ~ 5.4 V
Operating Temperature
-40°C ~ 85°C
Operating Frequency
433 MHz to 915 MHz
Mounting Style
SMD/SMT
Operating Supply Voltage
2.2 V to 5.4 V
Supply Current
1.5 mA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Applications
-
Memory Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1622-5

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SI4021-A1-FTR
Manufacturer:
SILICON
Quantity:
5 000
SIMPLIFIED INTERNAL CONTROL AND TIMING
The internal controller uses the clock generated by the crystal oscillator to sequentially process the various events and to de-bounce the
push-button (PB) inputs. If the oscillator is not running, internal logic automatically turns it on temporarily and then off again. Such events
are: any wake-up event (POR, PB press, wake-up timer timeout and low supply voltage detection), PB release and status read request by the
microcontroller.
If two wake-up events occur in succession, the crystal oscillator stays on until the next status read (acknowledgment of the first event).
Simplified Internal Control and Timing Diagrams
Push-button
Push-button
Push-button
(In terna l)
(In terna l)
(In terna l)
(inte rna l)
(inte rna l)
(inte rna l)
Osc_On
Osc_On
Osc_On
inpu t x
inpu t x
inpu t x
POR
nIRQ
POR
nIRQ
POR
Vdd
Vdd
Vdd
Microcontroller mode (ec=0, ex=0)
SP I
Microcontroller mode with multiple event read (ec=0, ex=0)
SP I
Microcontroller mode (ec=1, ex=0)
SP I
Status rd
Status rd cmd
Slee p cmd
Stat. b its
(PO R)
Tclk_tail**
Tsx*
Status rd cmd
Stat. b its
(PO R)
No te:
* Tsx : Crystal oscillator st
** Length of Tclk_tail is determined by the parameter in the Sleep comm
1us
Debouncing Time + T
Status rd cmd
Stat. b its
(PB x)
artup t im e
s x*
Status rd
Tsx*
Status rd cmd
Slee p cmd
Stat. b its
(PB x)
Tclk_tail* *
Tsx*
a nd
Si4021
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