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Posts Tagged ‘app notes’

App note: LCD fundamentals and the LCD driver module of 8-Bit PIC microcontrollers

Sunday, November 23rd, 2014

An app note going back to LCD display basics from Microchip. This application note provides an introduction to the basics of LCD: its construction, physics behind its operation, and the different factors affecting its properties and performance.  

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App note: Using PIC32 MCUs to develop low-cost controllerless (LCC) graphics solutions

Sunday, November 23rd, 2014

Adding a low-cost virtual graphics on embedded application, app note from Microchip. This application note describes the LCC Graphics Board that enables the implementation of a low-cost controllerless graphic method using a PIC32 microcontroller.

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App note: Surface mount LEDs- applications

Sunday, August 31st, 2014

How to use SMD LEDs to replace through hole LEDs, this app note (PDF) from OSRAM discusses about light guides/pipes, backlighting and lenses to channel its display efficiently. The use of SMT-TOPLED varies greatly from the use of traditional through hole LEDs. Historically through hole LEDs have been incorporated directly...

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App note: Unique and novel uses for ON Semiconductor’s new One-Gate family

Sunday, August 24th, 2014

One-gate logic uses and their benefits application note (PDF) from ON Semiconductor. One–Gate logic devices have been in use for several years, and are nothing more than single–gate derivatives of their multi–gate cousins. Traditional ICs were packaged in 14 and 16 pin Dual–in–line Packages (DIPs), and the goal of the...

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App note: microcontrollers and triacs easily connected

Sunday, February 9th, 2014

Here's an application note from NXP on how to easily connect main triacs and microcontrollers. This application note describes the easy connection of NXP LPC microcontrollers and three - quadrant (Hi-Com) triacs to control any resistive or inductive load at mains voltage. A one-for-all control method is presented that uses...

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App note: USB on the go (OTG) basics

Sunday, January 13th, 2013

Here's a tutorial from Maxim describing the basics of USB on the go (OTG). OTG gives, devices that support it, the capability to act as hosts to other devices. But OTG concept doesn't end just there, it also allows for on the fly role reversal, and gives the peripheral the...

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App note: SEPIC-Ćuk Converter gives split rails from a single supply

Sunday, September 9th, 2012

Analog Devices describes the SEPIC-Ćuk Converter. This type of DC/DC converter is used to create two outputs with the same voltage, but different polarities. This is particularly useful for powering the two rails of op-amp based circuits. A better solution is a SEPIC-Ćuk converter. This topology consists of an unregulated...

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Developing FFT applications with low-power microcontrollers

Friday, August 24th, 2012

Squank provided some links for developers who'd like to use the Fast Fourier Transform in low-power MCUs. FFT is an algorithm used in DSPs to quickly convert time-based functions to spectrum-based function, and vice versa. Via the forum.

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Workshop Update for June 29th, 2012

Friday, June 29th, 2012

Today we finalized the partkit list. W e contacted all the suppliers and received wholesale quotes from them. We also verified some Bus Pirate bug fixes. We searched for, and wrote about 4 app notes for the weekend. They come from Microchip, Texas Instruments, NXP, and  Linear Technology.

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App note: Control a USB Host-enabled AVR from an Android device

Saturday, June 16th, 2012

Atmel describes how to control an AVR chip from an Android device. This document introduces the Android Open Accessory Protocol  for Atmel® microcontrollers. The library and examples are  included in the Atmel AVR® Software Framework (ASF) to provide the customer with a quick and easy way to get started with...

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App note: USB Host stack programmer’s guide

Saturday, June 16th, 2012

A guide to Microchip's USB Host stack. USB Host hardware lets a small chip like a PIC use USB hardware like flash drives, printers, or in this case any type of custom hardware. This document is an in-depth programmer's guide for those customers who need to implement their own driver...

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App note: Driving analog inputs of SAR analog to digital converters

Saturday, May 19th, 2012

Here is an app note from Microchip describing how to drive analog inputs of Successive Approximation Register  analog to digital converters. Driving any A/D Converter (ADC) can be challenging if all  issues and trade-offs are not  well understood from the  beginning. With Successive Approximation Register (SAR) ADCs, the sampling speed...

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App note: Powering portable media players

Sunday, May 6th, 2012

Here is an app note from Texas Instruments on how to power various systems required for portable media players. These devices require several different voltages, multiple power sources, as well as integrated battery charging.  The article describes each individual section in detail.

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App note: Driving capacitive loads with op amps

Saturday, April 28th, 2012

How to drive capacitive loads with op amps. Operational  amplifiers that drive large capacitive loads can have problems like oscillation and peaking. This article describes how to anticipate and limit theses problems: Other problems include: reduced bandwidth, lower output slew rate, and higher power consumption. This application note explains why...

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App note: Calculating the error budget in precision DACs

Saturday, April 28th, 2012

How to chose a voltage reference and digital to analog converter chips to get the precision and stability you need: This application note focuses on Maxim's 3-terminal voltage references and precision DACs. To design a system, one must first understand how the parts are specified and then how their performance...

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App note: Voltage reference circuit collection

Sunday, April 22nd, 2012

Here is a voltage reference circuit collection from Linear Technology. This is a 32 page article with a ton of reference designs and specifications for each. How to select passive components for best performance is also covered.

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App note: Soft-Start in LED lighting

Saturday, February 25th, 2012

Using constant current to drive LEDs is a good practice, but turning them on instantly can be dangerous for both the LED and the LED driver.  Harmful spikes are generated when large currents are instantaneously turned on. This app note from Maxim describes how to soft start LEDs to increase...

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App note: Tips ‘n tricks for comparators in PIC microcontrollers

Saturday, February 4th, 2012

A collection of tips and tricks from Microchip for using the comparator module on PIC12F and PIC16F microcontrollers. These peripherals usually have high propagation delays, but many applications don't require high response times from the microcontroller. This app note outlines 20 different applications where integrated comparators might come in handy,...

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App note: Reference of Maxim RS-485 chips

Saturday, December 24th, 2011

Maxim describes the features of their RS-485 line of transceivers. It's important to chose transceivers for RS-485 communication that fall within the specifications of your network. The RS-485 standard is used in many applications, such as professional stage lighting. There is no clock signal so all the devices have to...

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App Note: Using FT2232H in FT245 synchronus FIFO mode

Saturday, October 29th, 2011

Ftdi's FT2232H chip is a very useful device, it has two USB channels supporting the High speed USB standard. When the highest bandwidth is needed, the FT245 synchronous FIFO mode provides the best performance delivering up to 40MB/s transfer rates. This app note by FTDI provides all the necessary information...

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