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HT46C64 Datasheet(PDF) 6 Page - Holtek Semiconductor Inc |
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HT46C64 Datasheet(HTML) 6 Page - Holtek Semiconductor Inc |
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6 / 47 page  Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions IOH I/O Port Segment Logic Output Source Current 3V VOH=0.9VDD -2 -4 ¾ mA 5V -5 -8 ¾ mA RPH Pull-high Resistance of I/O Ports and INT0, INT1 3V ¾ 20 60 100 k W 5V ¾ 10 30 50 k W VAD A/D Input Voltage ¾¾ 0 ¾ VDD V EAD A/D Conversion Integral Nonlinearity Error ¾¾ ¾ ±0.5 ±1 LSB IADC Additional Power Consumption if A/D Converter is Used 3V ¾ ¾ 0.5 1 mA 5V ¾ 1.5 3 mA Note: ²*fS² please refer to clock option of WDT (page 13) A.C. Characteristics Ta=25 °C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions fSYS1 System Clock ¾ 2.2V~5.5V 400 ¾ 4000 kHz ¾ 3.3V~5.5V 400 ¾ 8000 kHz fSYS2 System Clock (32768Hz Crystal OSC) ¾ 2.2V~5.5V ¾ 32768 ¾ Hz fRTCOSC RTC Frequency ¾¾ ¾ 32768 ¾ Hz fTIMER Timer I/P Frequency (TMR0/TMR1) 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 tRES External Reset Low Pulse Width ¾¾ 1 ¾¾ ms tSST System Start-up Timer Period ¾ Power-up or wake-up from HALT ¾ 1024 ¾ tSYS tINT Interrupt Pulse Width ¾¾ 1 ¾¾ ms tAD A/D Clock Period ¾¾ 1 ¾¾ ms tADC A/D Conversion Time ¾¾ ¾ 76 ¾ tAD tADCS A/D Sampling Time ¾¾ ¾ 32 ¾ tAD Note: tSYS= 1/fSYS HT46R64/HT46C64 Rev. 1.40 6 September 21, 2004 |
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