Electronic Components Datasheet Search
  New Zealand  ▼
ALLDATASHEET.CO.NZ

X  

Preview PDF HTML

ST25R3920B Datasheet(PDF) 40 Page - STMicroelectronics

Part # ST25R3920B
Description  Automotive NFC reader for CCC digital key and car center console
PDF  158 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25R3920B Datasheet(HTML) 40 Page - STMicroelectronics

Back Button ST25R3920B Datasheet HTML 36Page - STMicroelectronics ST25R3920B Datasheet HTML 37Page - STMicroelectronics ST25R3920B Datasheet HTML 38Page - STMicroelectronics ST25R3920B Datasheet HTML 39Page - STMicroelectronics ST25R3920B Datasheet HTML 40Page - STMicroelectronics ST25R3920B Datasheet HTML 41Page - STMicroelectronics ST25R3920B Datasheet HTML 42Page - STMicroelectronics ST25R3920B Datasheet HTML 43Page - STMicroelectronics ST25R3920B Datasheet HTML 44Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 40 / 158 page
background image
Application information
ST25R3920B
40/158
DS13890 Rev 4
The AM regulator, together with the am_filt bits, and circuitry behind, creates the reference
for the filter curve. A larger value of am_filt results in a larger time constant of the VDD_AM
regulator, and a slower signal transition. All timer names in AWS register that end with “1”
(for instance, tmodsw1) represent the timer starts at falling edge. Similarly, all timer names
that end with ‘2’ (for instance, tmodsw2) mean that the timer starts at rising edge (end of
modulation).
The typical preset values for slow, medium and fast transients in OOK and ASK can be
applied by setting as showed in the below table:
Note:
The settings must be adjusted individually with the final antenna.
Table 5. Typical preset values for slow, medium and fast transients in OOK and ASK
Slow transient
Medium transient
Fast transient
AWS Config 2 = 0xXCh
AWS Config 2 = 0xX8h
AWS Config 2 = 0xX4h
AWS time 1 = 0x01h
AWS time 1 = 0x01h
AWS time 1 = 0x01h
AWS time 3 = 0x9Ch
AWS time 3 = 0x79h
AWS time 3 = 0x57h
AWS time 4 = 0x0Ah
AWS time 4 = 0x07h
AWS time 4 = 0x06h



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 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


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