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HT46RU22 Datasheet(PDF) 5 Page - Holtek Semiconductor Inc |
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HT46RU22 Datasheet(HTML) 5 Page - Holtek Semiconductor Inc |
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5 / 59 page  A.C. Characteristics Ta=25 °C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions fSYS System Clock (Crystal OSC, RC OSC) 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 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 Width to Reset ¾¾ 0.25 1 2 ms 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 tIIC I 2C Bus Clock Period ¾ Connect to external pull-high resistor 2k W 64 ¾¾ *tSYS Note: *tSYS=1/fSYS HT46RU22 Rev. 1.21 5 December 29, 2008 |
Similar Part No. - HT46RU22_08 |
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Similar Description - HT46RU22_08 |
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