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AN3433 数据表(PDF) 31 Page - STMicroelectronics

部件名 AN3433
功能描述  Optimizing wakeup time and power consumption in CR95HF and STRFNFCA devices
PDF  34 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

AN3433 数据表(HTML) 31 Page - STMicroelectronics

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AN3433
Example of CR95HF tag detection calibration process
Doc ID 019046 Rev 2
31/34
REM, Read Wake-up event = Timeout (0x01)
or
Wake-up event = Tag
Detect (0x02)
REM, Step 5: new DacDataH value = previous DacDataH +/- 0x10
REM, If previous Wake-up event was Timeout (0x01), we must decrease
DacdataH (-0x10); else, we increase DacDataH (+ 0x10)
>>> CR95HFDLL_STCMD, 01 070E03A100F8011800206060006C3F01
<<< 00 01 02
REM, Read Wake-up event = Timeout (0x01) or Wake-up event = Tag
Detect (0x02)
REM, Step 6: new DacDataH value = previous DacDataH +/- 0x08
REM, If previous Wake-up event was Timeout (0x01), we must decrease
DacDataH (-0x08); else, we increase DacDataH (+ 0x08)
>>> CR95HFDLL_STCMD, 01 070E03A100F801180020606000743F01
<<< 00 01 01
REM, Read Wake-up event = Timeout (0x01) or
Wake-up event = Tag
Detect (0x02)
REM, Step 7: new DacDataH value = previous DacDataH +/- 0x04
REM, If previous Wake-up event was Timeout (0x01), we must decrease
DacDataH (-0x04); else, we increase DacDataH (+ 0x04)
>>> CR95HFDLL_STCMD, 0 1070E03A100F801180020606000703F01
<<< 00 01 01
REM, Read Wake-up event = Timeout (0x01) or
Wake-up event = Tag
Detect (0x02)
REM, If last Wake-up event = Tag Detect (0x02), search DacDataRef =
last DacDataH value
REM, If
last Wake-up event = Timeout (0x01), search DacDataRef =
last DacDataH value -4
REM, For tag detection usage, we recommend setting DacDataL =
DacDataRef -8 and DacDataH = DacDataRef +8
>>> CR95HFDLL_STCMD, 01 070E0B21007901180020606064743F01
<<< 00 01 01



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