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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATmega32HVB датащи(PDF) 123 Page - ATMEL Corporation |
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ATmega32HVB датащи(HTML) 123 Page - ATMEL Corporation |
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123 / 273 page  123 8042A–AVR–07/09 ATmega16HVB/32HVB 21. Voltage Reference and Temperature Sensor 21.1 Features • Accurate Voltage Reference of 1.100V • Voltage Reference Calibration Interface • Internal Temperature Sensor • External Decoupling for Optimum Noise Performance • Short Circuit Detection on the External Decoupling pin • Low Power Consumption 21.2 Overview ATmega16HVB/32HVB features a highly accurate low power On-chip Bandgap Reference Volt- age, VREF of 1.100V. This reference voltage is used as reference for the On-chip Voltage Regulator, the Brown-out Detector, the internal Cell Balancing, the Battery Protection, the V- ADC and the CC-ADC. Figure 21-1 shows an overview of the On-chip voltage reference. Figure 21-1. Bandgap Reference Voltage In addition to the Bandgap Reference Voltage, the Voltage Reference includes a Calibration Unit that enables run time calibration of the Reference Voltage, an On-chip temperature sensor for monitoring the die temperature, and a Bandgap Short Detector to detect short circuit conditions on the external VREF pin for highest safety. BG Calibration BG Control and Status 8-bit databus Bangap Reference w/ temperature sensor BG Short Detector VREF VREFGND IRQ VPTAT 1.1V BG Buffer |
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