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HT49C10 Scheda tecnica(PDF) 7 Page - Holtek Semiconductor Inc |
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HT49C10 Scheda tecnica(HTML) 7 Page - Holtek Semiconductor Inc |
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7 / 47 page ![]() A.C. Characteristics Ta=25°C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions fSYS1 System Clock (Crystal OSC) 3V ¾ 455 ¾ 4000 kHz 5V ¾ 455 ¾ 4000 kHz fSYS2 System Clock (RC OSC) 3V ¾ 400 ¾ 2000 kHz 5V ¾ 400 ¾ 3000 kHz fTIMER Timer I/P Frequency (TMR) 3V ¾ 0 ¾ 4000 kHz 5V ¾ 0 ¾ 4000 kHz tWDTOSC Watchdog Oscillator 3V ¾ 45 90 180 ms 5V ¾ 35 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 Note: tSYS=1/fSYS HT49C10 7 September 28, 1999 |
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