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HT48F70E Datasheet(PDF) 5 Page - Holtek Semiconductor Inc |
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HT48F70E Datasheet(HTML) 5 Page - Holtek Semiconductor Inc |
5 / 58 page A.C. Characteristics Ta=25 °C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions fSYS System Clock (RC OSC, Crystal OSC) ¾ 2.2V~5.5V 400 ¾ 4000 kHz ¾ 3.3V~5.5V 400 ¾ 8000 kHz ¾ 4.5V~5.5V 400 ¾ 12000 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 ¾ 4.5V~5.5V 0 ¾ 12000 kHz tWDTOSC Watchdog Oscillator Period 3V ¾ 45 90 180 ms 5V ¾ 32 65 130 ms tWDT1 Watchdog Time-out Period (WDT Internal Clock Source) 3V Without WDT prescaler 11 23 46 ms 5V 8 17 33 ms tWDT2 Watchdog Time-out Period (Instruction Clock Source) ¾ Without WDT prescaler ¾ 1024 ¾ *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 1 ¾ 2ms tINT Interrupt Pulse Width ¾¾ 1 ¾¾ ms Note: *tSYS=1/fSYS EEPROM - A.C. Characteristics Ta=25 °C Symbol Parameter VCC=5V ±10% VCC=2.2V ±10% Unit Min. Max. Min. Max. fSK Clock Frequency 0201 MHz tSKH SK High Time 250 ¾ 500 ¾ ns tSKL SK Low Time 250 ¾ 500 ¾ ns tCSS CS Setup Time 50 ¾ 100 ¾ ns tCSH CS Hold Time 0 ¾ 0 ¾ ns tCDS CS Deselect Time 250 ¾ 250 ¾ ns tDIS DI Setup Time 100 ¾ 200 ¾ ns tDIH DI Hold Time 100 ¾ 200 ¾ ns tPD1 DO Delay to ²1²¾ 250 ¾ 500 ns tPD0 DO Delay to ²0²¾ 250 ¾ 500 ns tSV Status Valid Time ¾ 250 ¾ 250 ns tPR Write Cycle Time ¾ 5 ¾ 5ms HT48F70E Rev. 1.30 5 July 29, 2009 |
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