New TI MSP430G2xxx chips on the way

video platformvideo managementvideo solutionsvideo player TI has released the datasheets on their new MSP430G2xxx chips. The MSP430G2x32 and MSP430G2x02 series of microcontrollers are ultra-low-power mixed signal microcontrollers with built-in 16-bit timers, and up to 16 I/O touch sense enabled pins and built-in communication capability using the universal serial communication interface. The MSP430G2x32 series have a […]

Logic signal interfacing

If you’re looking for a quick and dirty means of interfacing high and low voltage logic devices, consider the Texas Instruments CD40109. This CMOS device functions with supply and signal voltages of up to 20 volts, and can either shift voltages up or down depending on the ratio of Vcc (low supply) to Vdd (high […]

NEW PRODUCT: MMA7455L 3-axis accelerometer breakout board

MMA7455L is an inexpensive 3-axis accelerometer with adjustable measurement range of 2/4/8g. It can communicate with microcontrollers through an SPI or I2C interface. This chip is only a few dollars in onesies, but it comes in a leadless LGA-14 package. It’s a challenging chip to solder, so we though a inexpensive breakout board might be […]

Christmas music on the Picaxe

If you need a quick source of canned Christmas music in a project, don’t forget the Picaxe line of microcontrollers from Revolution Education. All Picaxe “M” chips have three Christmas tunes preprogrammed and playable using the PLAY command: Jingle Bells, Silent Night, and Rudolph the Red Nosed Reindeer!

Altera introduces Max V CPLD

Altera has introduced their Max V family of CPLDs. Features include operation from a single 1.8 volt external supply for device core, internal oscillator, user flash memory block of up to 8 Kbits for non-volatile storage with up to 1000 read/write cycles, and multiVolt I/O interface supporting 3.3, 2.5, 1.8, 1.5 and 1.2-Volt logic levels. […]

Flash ADCs, USB battery chargers

rsdio tipped us to some interesting parts and application notes. First up is a tutorial on fast parallel analog to digital converters: Flash analog-to-digital converters, also known as parallel ADCs, are the fastest way to convert an analog signal to a digital signal. Flash ADCs are ideal for applications requiring very large bandwidth, but they […]

Programmable memory guide

EPROMs are old-school data storage chips with a little window that exposes the silicon inside. Once these chips are programmed, they can only be erased by shining ultraviolet light through the window. The EPROM help page is a guide to identifying and working with these devices. It also covers more modern programmable memory like EEPROM, […]

Bus Pirate: MMA7456L three-axis accelerometer

Starlino used the Bus Pirate to explore a Freescale MMA7456L, a three-axis accelerometer with both I2C and SPI interfaces. The surface mount chip is on a homemade though-hole breakout board, there’s also a tutorial on this handy adapter. You can get a Bus Pirate for $30, including worldwide shipping at Seeed Studio. Adafruit also has […]

Play WAV audio files with AD5330 and Arduino

SparkFun has a tutorial about playing WAV files with an 8-bit AD5330 Digital Analog Converter (DAC). The AD5330 has an 8-bit parallel interface and operates from 2.5v to 5.5v. SparkFun uses an Arduino, micro SD shield, and AD5330 breakout board to play WAV files. The Arduino reads uncompressed WAV files from a FAT formatted SD […]

ChipDB

Hunting and opening heavy PDF files to check IC pinouts is a real pain. ChipDB looks like an awesome quick reference concept, with none of the frustration of those awful datasheet aggregators. There’s not a lot of chips yet, but we found the 4066 quad bilateral switch that’s used to control the pull-up resistors on […]

Chips: 24AA02E48 I2C EEPROM with MAC address

See the latest version in the documentation wiki. The 24AA02E48 is an I2C EEPROM with 256bytes of data storage. It’s similar to other EEPROMs we’ve looked at in the past, but this chip has a 48bit EUI-48 ethernet MAC address permanently burned into the upper-most six bytes. This is an easy and cheap way to […]

Chips: DS1307 I2C real-time clock

This is an old version, see the latest version on the documentation wiki. The DS1307 is a simple, inexpensive I2C real-time clock, it’s somewhat similar to the PCF8563 that was previously demonstrated with the Bus Pirate. This chip has some nice features. It has internal capacitors on both oscillator pins, the only required external part […]