SI4021-A1-FT Silicon Laboratories Inc, SI4021-A1-FT Datasheet - Page 18

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

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

Simultaneously Pressed Push-Button Detect by Microcontroller
Simplified Block Diagram of Push-Button 1–4 Inputs
Push button
Push button
(internal)
nIRQ
input 1
input 2
Push-button1,2,3
SPI
POR
Vdd
Microcontroller mode
Push-button4
p4
Status rd
Push-button1
Push-button2
POR
With internal weak pull-up
VDD
ENABLE/DISABLE
WEAK PULL-UP
CLK
blocker signal
PB_nIRQdly*
Push-button1
Push-button2
Status rd
Internal
and
to
PB1
Digital glitch
CLR for P.B1,2
bc
Status rd
filter
PB1
VDD
To Digital glitch filter for
Status rd
Push-button4
PB2
POR, LBD, WAKE UP TIMER,
P. BUTTONS EVENT FLAGS
Status rd
D
CLR
PB1
Q
Status rd
PB2
Note:
*PB_nIRQdly is equal with the
debounce time
Status rd
Note:
STAT. REG. READ Command **
** In uC controlled mode
PB1
* In EEprom mode
Notice:
Only one EVENT is
serviced simultaneously
the others are pending.
SLEEP Command *
COUNT/SINGLE
EVENT FLAG
b1, b2, b3
Si4021
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