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数据搜索系统，热门电子元器件搜索 |
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ATmega16HVB 数据表(PDF) 43 Page - ATMEL Corporation |
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ATmega16HVB 数据表(HTML) 43 Page - ATMEL Corporation |
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43 / 273 page  43 8042A–AVR–07/09 ATmega16HVB/32HVB Figure 11-1. Reset Logic 11.2.1 Power-on Reset and Charger Connect The Voltage Regulator will not start up until the Charger Detect module has enabled it. Before this happens the chip will be in Power-off mode and only the Charger Detect module is enabled. In order for the Charger Detect module to enable the Voltage Regulator, the voltage at the BATT pin must exceed the Power-On Threshold Voltage, V POT. When the voltage at the BATT pin exceeds V POT, the Voltage Regulator starts up and the chip enters RESET mode. When the Delay Counter times out, the chip will enter Active mode. See Figure 10-1 on page 36. For details on Charger Detect, see ”Charger Detect” on page 129. MCU Status Register (MCUSR) Reset Circuit Delay Counters CK TIMEOUT DATA BUS Clock Generator SPIKE FILTER Pull-up Resistor Ultra Low Power RC Oscillator SUT[1:0] Power-on Reset Circuit/ Charger Detect Watchdog Timer RESET /dW VFET BATT POR VREG COUNTER RESET Brown-out Detection VREG debugWIRE |
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