Microchip’s application note (PDF!) on USB Embedded Host Mass Storage class: With the introduction of Microchip’s microcontrollers with the USB OTG peripheral, microcontroller applications can easily support USB Embedded Host functionality. One of the most common uses of this capability is to interface to mass storage devices, such as USB Flash Drives and memory card readers. […]
Tag Archives: application note
App note: QuickBoot method for FPGA design remote update
A QuickBoot method for FPGA design remote update application note (PDF!) from Xilinx: This application note presents detailed descriptions of the QuickBoot method that are important for evaluating the QuickBoot solution and debugging implementation problems. Demonstration implementations of the QuickBoot method are provided for the KC705 evaluation board using the serial peripheral interface (SPI) flash or […]
App note: High voltage adjustable power supplies
TI application note (PDF!) on high voltage adjustable power supplies: An improved approach is shown in Figure 2. Here an LM329B 6.9V zener reference has been stacked in series with the LM317’s internal reference. This both improves temperature stability, since the LM329B has a guaranteed TC of ±20 ppm/˚C, and improves regulation, because more […]
App note: AES Bootloader
An application note (PDF!) from Atmel on AES Bootloader: This application note has presented a method for transferring data securely to an Atmel AVR microcontroller with bootloader capabilities. This document has also highlighted techniques that should be implemented when building a secured system.
App note: Design guidelines for ATtiny43U
Here’s a design guidelines for ATtiny43U from Atmel, app note here (PDF!): The integrated boost converter of ATtiny43U provides the microcontroller and peripherals with a fixed supply voltage, generated from an external supply of lower voltage. The boost converter is a switching type, step-up regulator that requires some external components to be complete. This includes an external inductor, […]
App note: Mixed signal microcontroller
A mixed signal microcontroller application note (PDF!) from Texas Instruments: The Texas Instruments MSP430 family of ultra-low-power microcontrollers consists of several devices featuring different sets of peripherals targeted for various applications. The architecture, combined with five low-power modes, is optimized to achieve extended battery life in portable measurement applications. The device features a powerful 16-bit RISC CPU, 16-bit […]
App note: Latency in factory automation
An app note (PDF!) from Texas Instruments on importance of latency in factory automation: Latency is a critical parameter in Ethernet networks developed for Factory Automation applications. Latency is not a defined value for Ethernet as specified by the IEEE 802.3 standard. Nor is Ethernet inherently synchronous or repeatable. This disconnect between the inherent characteristics of Ethernet and the needs […]
App note: Switch Mode Power Supply (SMPS) Topologies (part I)
Here is an app note (PDF!) from Microchip describing the basics of different SMPS topologies: The industry drive toward smaller, lighter and more efficient electronics has led to the development of the Switch Mode Power Supply (SMPS). There are several topologies commonly used to implement SMPS. This application note, which is the first of a […]
App note: Understanding high speed ADC testing and evaluation
App note on understanding high speed ADC testing and evaluation (PDF!) from Analog Devices: This document describes both the characterization and production test methods used by the High Speed Converter Group of Analog Devices, Inc., to evaluate high speed analog-to-digital converters (ADCs). While this application note should be considered a reference, it is not a substitute […]
App note: Power gain stages for monolithic amplifiers
Application note (PDF!) on power gain stages for monolithic amplifiers from Linear: The type of circuitry used in an output stage varies with the application, which can be quite diverse. Current and voltage boosting are common requirements, although both are often simultaneously required. Voltage gain stages are usually associated with the need for high voltage […]
App note: Introduction to hearing aids and important design considerations
Introduction to hearing aids app note (PDF!) from Maxim: This application note introduces the styles of hearing aids, including behind the ear (BTE), in the ear (ITE), in the canal (ITC), and completely in the canal (CIC), as well as a brief summary of both analog and digital hearing aid technologies. Also discussed is the […]
App note: AVR32 UC3 USB host mass storage bootloader
USB host mass storage bootloader (PDF!) app note from Atmel: Features • In-System Programming (ISP) and Field Upgrade – Configurable Start Condition with an Upgrade Firmware File ‘avr32fwupgrade.uc3’ Located on a USB Device Implementing the USB Mass Storage Class • USB Protocol – Based on the USB Host Mass Storage Class (MSC) • USB MSC […]
App note: AN-42 IC provides on-card regulation for logic circuits
This application note (PDF!) from TI provides on-card regulation for logic circuits: Because of the relatively high current requirements of digital systems, there are a number of problems associated with using one centrally-located regulator. Heavy power busses must be used to distribute the regulated voltage. With low voltages and currents of many amperes, voltage drops in […]
App note: Welcoming water metering into the 21st Century
Maxim application note: Water. It is the most precious managed resource on the planet. Getting clean water to everyone can, in fact, be a matter of life and death. Managing water resources is a serious challenge today. Water is expensive to clean and difficult to get to where it is needed. In fact, connecting people […]
App note: Ultrasonic sensing for water flow meters and heat meters
TI’s application note on Ultrasonic sensing for water flow meters and heat meters (PDF!) Ultrasonic flow meters are gaining wide usage in commercial, industrial and medical applications. Major benefits of utilizing this type of flowmeter are higher accuracy, low maintenance (no moving parts), noninvasive flow measurement, and the ability to regularly diagnose health of the meter. This application […]
App note: Isolation design flow for Xilinx 7 series FPGAs or Zynq-7000 AP SoCs (ISE Tools)
Xilinx application note, Isolation design flow for Xilinx 7 series FPGAs or Zynq-7000 AP SoCs (ISE Tools) (PDF!) This application note is written for FPGA designers wishing to implement security or safety critical designs, that is, information assurance (single chip cryptography), avionics, automotive, and industrial applications, using the Xilinx Isolation Design Flow (IDF). This document explains how […]
App note: 1-μA capacitive grip detection based on MSP430 Microcontrollers
An app note from TI, 1-μA capacitive grip detection based on MSP430 Microcontrollers (PDF!) This application report discusseshow to design a simple and ultra low-power grip detector Booster Pack for the MSP430 LaunchPad. The PINOSC feature in every msp430G2xx2 and msp430G2xx3 device makes it possible to eliminate all the external components when implementing a capacitive […]
App note: Zero Latency Multiplexing I/O for ASIC Emulation
Zero Latency Multiplexing I/O for ASIC Emulation (PDF!) application note from Xilinx: This application note provides a method for FPGA emulation platforms to communicate multiple signals over one I/O or I/O differential pair to another FPGA. This multiplexing method serializes data up to 800 Mb/s without introducing any additional cycles of latency to the user […]
App note: Triacs – How to calculate power and predict Tjmax
An application note (PDF!) from NXP on how to calculate the power dissipated by the triac: This Application Note describes how to calculate the power dissipation for triacs and Silicon Controlled Rectifiers. Thermal calculations are also included to help the circuit designer to predict the maximum junction temperature or calculate the required heatsink thermal resistance. […]
App note: Low drop fixed and adjustable positive voltage regulators
Low drop fixed and adjustable positive voltage regulators application note (PDF!) from ST: The LD1117A is a low drop voltage regulator able to provide up to 1 A of output current, available also in adjustable versions (VREF = 1.25 V). In fixed versions, the following output voltages are offered: 1.2 V, 1.8V, and 3.3 V. The […]