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データシートサーチシステム |
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データシートサーチシステム |
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HT46R46 データシート(PDF) 7 Page - Holtek Semiconductor Inc |
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HT46R46 データシート(HTML) 7 Page - Holtek Semiconductor Inc |
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7 / 77 page  A.C. Characteristics Ta=25 °C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions fSYS System Clock ¾ 2.2V~5.5V 400 ¾ 4000 kHz ¾ 3.3V~5.5V 400 ¾ 8000 kHz fTIMER Timer I/P Frequency (TMR) ¾ 2.2V~5.5V 0 ¾ 4000 kHz ¾ 3.3V~5.5V 0 ¾ 8000 kHz tWDTOSC Watchdog Oscillator Period 3V ¾ 45 90 180 ms 5V ¾ 32 65 130 ms tWDT1 Watchdog Time-out Period (RC) ¾¾ 2 15 ¾ 2 16 tWDTOSC tWDT2 Watchdog Time-out Period (System Clock) ¾¾ 2 17 ¾ 2 18 tSYS tRES External Reset Low Pulse Width ¾¾ 1 ¾¾ ms tSST System Start-up Timer Period ¾ Wake-up from HALT ¾ 1024 ¾ *tSYS tLVR Low Voltage Reset Time ¾¾ 0.25 1 2 ms tINT Interrupt Pulse Width ¾¾ 1 ¾¾ ms tAD1 A/D Clock Period - HT46R46 ¾¾ 0.5 ¾¾ ms tAD2 A/D Clock Period - HT46R47/HT46R48A/HT46R49 ¾¾ 1 ¾¾ ms tADC1 A/D Conversion Time - HT46R46 ¾¾ ¾ 64 ¾ tAD1 tADC2 A/D Conversion Time - HT46R47/HT46R48A/HT46R49 ¾¾ ¾ 76 ¾ tAD2 tADCS1 A/D Sampling Time - HT46R46 ¾¾ ¾ 32 ¾ tAD1 tADCS2 A/D Sampling Time - HT46R47/HT46R48A/HT46R49 ¾¾ ¾ 32 ¾ tAD2 Note: *tSYS=1/fSYS HT46R46/C46/R47/C47/R48A/C48A/R49 Rev. 1.30 7 June 5, 2008 |
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