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HT46R46 数据表(PDF) 5 Page - Holtek Semiconductor Inc |
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HT46R46 数据表(HTML) 5 Page - Holtek Semiconductor Inc |
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5 / 42 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 tINT Interrupt Pulse Width ¾¾ 1 ¾¾ ms tAD1 A/D Clock Period for HT46R46/HT46C46 ¾¾ 0.5 ¾¾ ms tAD2 A/D Clock Period for HT46R47/HT46C47 ¾¾ 1 ¾¾ ms tADC1 A/D Conversion Time for HT46R46/HT46C46 ¾¾ ¾ 64 ¾ tAD1 tADC2 A/D Conversion Time for HT46R47/HT46C47 ¾¾ ¾ 76 ¾ tAD2 tADCS1 A/D Sampling Time for HT46R46/HT46C46 ¾¾ ¾ 32 ¾ tAD1 tADCS2 A/D Sampling Time for HT46R47/HT46C47 ¾¾ ¾ 32 ¾ tAD2 Note: *tSYS=1/fSYS HT46R46/HT46C46/HT46R47/HT46C47 Rev. 1.00 5 December 28, 2004 |
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