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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT82K75REW датащи(PDF) 7 Page - Holtek Semiconductor Inc |
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HT82K75REW датащи(HTML) 7 Page - Holtek Semiconductor Inc |
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7 / 103 page  A.C. Characteristics for EEPROM Memory Ta=25 °C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions fSYS System Clock 3V ¾ 5.7 6 6.3 MHz tRCSYS Watchdog OSC Period 3V ¾¾ 71 ¾ms tWDT1 Watchdog Time-out Period with 6-stage Prescaler 3V WDTS=1 ¾ 4.57 ¾ ms tRES External Reset Low Pulse Width ¾¾ 1 ¾¾ ms tSST System Start-up Timer ¾¾ ¾ 512 ¾ 1/fSYS tLVR Low Voltage Width to Reset ¾¾ 0.25 1 2 ms tWake-up MCU Wake-up Timer ¾¾ ¾ ¾ 1ms tconfigure Watchdog Time-out Period ¾¾ ¾ 1024 ¾ tRCSYS Power-On Reset Characteristics Ta=25 °C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions IPOR Operating current 1.8V~ 3.3V ¾¾ 1.0 ¾mA RRVDD VDD Rise Rate to Ensure Power-on Reset ¾ Without 0.1 mF between VDD and VSS 0.05 ¾¾ V/ms VPOR Maximum VDD Start Voltage to Ensure Power-on Reset ¾ Without 0.1 mF between VDD and VSS ,Ta=25 °C 0.9 ¾ 1.5 V tPOR Power-on Reset Low Pulse Width ¾ Without 0.1 mF between VDD and VSS 2 ¾¾ ms With 0.1 mF between VDD and VSS 10 ¾¾ ms HT82M75REW/HT82K75REW Rev. 1.00 7 June 11, 2010 T i m e V D D V P O R R R V D D t P O R |
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