AVR054: Run-time calibration of the internal RC oscillator
ثبت نشده
چکیده
• Calibration of internal RC oscillator via UART • Synchronization/ calibration to within +/-2% of target frequency with a single synch-byte. • Alternate run-time synchronization/calibration to within +/-1% of target frequency with double synch-byte. • Support for all AVRs with tunable RC oscillator • 50% duty cycle required for correct synchronization/ calibration. • Enables robust UART communication with low cost clock sources in varying operating conditions.
منابع مشابه
AVR053: Calibration of the internal RC oscillator
This application note describes a fast and accurate method to calibrate the internal RC oscillator. It offers an easily adaptable calibration firmware source code, which can be used with any AVR® with internal tunable RC oscillator. This firmware allows device calibration using the AVR tools STK®500, AVRISP, AVRISP mkII, JTAGICE or JTAGICE mkII, but could also be used for 3rd party calibration ...
متن کاملMedium-density performance line ARM-based 32-bit MCU with 32 to 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, 9 communication interfaces
■ Core: ARM 32-bit CortexTM-M3 CPU – 72 MHz maximum frequency, 1.25 DMIPS/MHz (Dhrystone 2.1) performance at 0 wait state memory access – Single-cycle multiplication and hardware division ■ Memories – 32 to 128 Kbytes of Flash memory – 6 to 20 Kbytes of SRAM ■ Clock, reset and supply management – 2.0 to 3.6 V application supply and I/Os – POR, PDR, and programmable voltage detector (PVD) – 4-to...
متن کاملMedium-density performance line ARM-based 32-bit MCU with 64 or 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, 9 communication interfaces
■ Core: ARM 32-bit CortexTM-M3 CPU – 72 MHz maximum frequency, 1.25 DMIPS/MHz (Dhrystone 2.1) performance at 0 wait state memory access – Single-cycle multiplication and hardware division ■ Memories – 64 or 128 Kbytes of Flash memory – 20 Kbytes of SRAM ■ Clock, reset and supply management – 2.0 to 3.6 V application supply and I/Os – POR, PDR, and programmable voltage detector (PVD) – 4-to-16 M...
متن کاملProgrammable single-phase energy metering IC with tamper detection
Measures active, reactive, and apparent energies Current, voltage RMS and instantaneous measurement Frequency measurement Ripple-free active energy pulsed output Live and neutral monitoring for tamper detection Fast and simple one-point digital calibration over the whole current range Integrated linear voltage regulators for digital and analog supply Selectable RC or crystal osc...
متن کاملOscillators: How to generate a precise clock source
In our modern era, digital logic has become the core of all the electronics circuits either in the form of an FPGA, microcontroller, microprocessor, or discreet logic. Digital systems use many components that must be interconnected to perform the required functions. The vital element for proper operation of such a digital system is a CLOCK signal that enables all these digital components to com...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008