SI4020-I1-FT Silicon Laboratories Inc, SI4020-I1-FT Datasheet - Page 12

• Manufacturer Part Number: SI4020-I1-FT
• Description: IC TX FSK 915MHZ 5.4V 16-TSSOP
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4020-I1-FT

• Package / Case: 16-TSSOP
• Frequency: 315MHz, 433MHz, 868MHz, and 915MHz
• Modulation Or Protocol: FSK, OOK
• Data Rate - Maximum: 256 kbps
• Current - Transmitting: 14mA
• 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: 315 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: -
• Power - Output: -
• Applications: -
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1621-5

CONTROL INTERFACE
Commands to the transmitters are sent serially. Data bits on pin SDI are shifted into the device upon the rising edge of the clock on
pin SCK whenever the chip select pin nSEL is low. When the nSEL signal is high, it initializes the serial interface. The number of bits
sent is an integer multiple of 8. All commands consist of a command code, followed by a varying number of parameter or data bits.
All data are sent MSB first (e.g. bit 15 for a 16-bit command). Bits having no influence (don’t care) are indicated with X. The Power
On Reset (POR) circuit sets default values in all control and command registers.
Timing Specification
Timing Diagram
nSEL
nIRQ
SCK
SDI
Symbol
t
t
t
t
t
t
t
t
t
SHI
CH
CL
SS
SH
DS
DH
OD
BL
t
SS
t
DS
BIT15
t
DH
t
CH
Parameter
Clock high time
Clock low time
Select setup time (nSEL falling edge to SCK rising edge)
Select hold time (SCK falling edge to nSEL rising edge)
Select high time
Data setup time (SDI transition to SCK rising edge)
Data hold time (SCK rising edge to SDI transition)
Data delay time
Push-button input low time
t
CL
BIT14
BIT13
BIT8
t
OD
POR
BIT7
BIT1
WK-UP
BIT0
nIRQ
t
SH
Minimum value [ns]
t
SHI
25
25
10
10
25
10
25
5
5
Si4020
12