Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

SI4021 Datasheet(PDF) 3 Page - Silicon Laboratories

Part # SI4021
Description  Automatic antenna tuning circuit
PDF  35 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  SILABS [Silicon Laboratories]
Direct Link  http://www.silabs.com
Logo SILABS - Silicon Laboratories

SI4021 Datasheet(HTML) 3 Page - Silicon Laboratories

  SI4021 Datasheet HTML 1Page - Silicon Laboratories SI4021 Datasheet HTML 2Page - Silicon Laboratories SI4021 Datasheet HTML 3Page - Silicon Laboratories SI4021 Datasheet HTML 4Page - Silicon Laboratories SI4021 Datasheet HTML 5Page - Silicon Laboratories SI4021 Datasheet HTML 6Page - Silicon Laboratories SI4021 Datasheet HTML 7Page - Silicon Laboratories SI4021 Datasheet HTML 8Page - Silicon Laboratories SI4021 Datasheet HTML 9Page - Silicon Laboratories Next Button
Zoom Inzoom in Zoom Outzoom out
 3 / 35 page
background image
Si4021
3
PACKAGE PIN DEFINITIONS, MICROCONTROLLER MODE
Pin type key: D=digital, A=analog, S=supply, I=input, O=output, IO=input/output
Microcontroller Mode Pin Assignment
SDI
SCK
nSEL
PB1
PB2
PB3
PB4
CLK
FSK
VDD
nIRQ
RFP
RFN
MOD
VSS
XTL
1
2
4
5
3
6
7
8
16
15
13
12
14
11
10
9
Pin
Name
Type
Function
1
SDI
DI
Data input of serial control interface
2
SCK
DI
Clock input of serial control interface
3
nSEL
DI
Chip select input of serial control interface (active low)
4
PB1
DI
Push-button input #1 (active low with internal pull-up resistor)
5
PB2
DI
Push-button input #2 (active low with internal pull-up resistor)
6
PB3
DI
Push-button input #3 (active low with internal pull-up resistor)
7
PB4
DI
Push-button input #4 (active low with internal pull-up resistor)
8
CLK
DO
Microcontroller clock (1 MHz-10 MHz)
9
XTL
AIO
Crystal connection (other terminal of crystal to VSS)
10
VSS
S
Ground reference
11
MOD
DI
Connect to logic high (microcontroller mode)
12
RFN
AO
Power amplifier output (open collector)
13
RFP
AO
Power amplifier output (open collector)
14
nIRQ
DO
Interrupt request output for microcontroller (active low) and status read output
15
VDD
S
Positive supply voltage
16
FSK
DI
Serial data input for FSK modulation



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com