MIC4811: High Current 6 Channel Linear WLED Driver with DAM™ and Ultra Fast PWM™ Control

Micrel has announced the availability of the MIC4811 High Current 6 Channel Linear WLED Driver with DAM™ and Ultra Fast PWM™ Control. The MIC4811/MIC4812 are high efficiency linear White LED (WLED) drivers designed to drive up to six high current WLEDs for signage lighting. The MIC4811/MIC4812 provide the highest possible efficiency at low source voltages […]

Microchip expands low pin count, enhanced mid-range 8-bit PIC® microcontroller family

Microchip recently announced the latest additions to its Enhanced Mid-Range core 8-bit PIC® microcontroller (MCU) family, the low pin count PIC12F(LF)1840 and PIC16F(LF)1847. Features include MI2C, SPI, and EUSART (w/auto baud) interfaces, and an ECCP (Enhanced/Capture Compare PWM) Module, along with the usual ADC, DAC, capacitive touch sensor channels, 256 bytes of EEPROM and In […]

Si4707 weather band radio receiver ICs

NashblackCat writes to inform us of a chip that reads weather radio data: Silicon Laboratories makes an IC Weather Band (WB) radio called the Si4707. This IC is capable of using the specific area message encoding (SAME) and also supports the detection of the 1050Hz alert tone that is used by the National Weather Service. […]

Practical MC13224 firmware extraction

Travis Goodspeed wrote this article on his blog detailing his extraction of firmware from the MC13224 that had been read protected. This is the same MCU used in the Defcon 18 badge and the Redwire Econotag. He presents two methods. In one he decaps the SPI flash memory chip using nitric acid, then removes and […]

TI’s ultra-low-power MSP430FR57xx FRAM microcontrollers

TI has has announced their MSP430FR57xx ultra-low-power ferroelectric random access memory (FRAM) line of 16-bit microcontrollers. Their stated benefits are the ability to write data more than 100 times faster with power consumption of 250 times less than flash- and EEPROM-based microcontrollers. They are also code compatible with other MSP platforms. The on-chip FRAM allows […]

What does a $7,500 dev kit look like?

We’re all familiar with CPLD and FPGA. Now Tabula, Inc., has debuted their line of 3PLD chips. Known as the ABAX product family and presently targeted primarily at communications equipment vendors, the chips are said to employ an innovative architecture called Spacetime that enables the devices to achieve superior density and capability for logic, memory, […]

MachXO2 Pico Development Kit promo

Remember the Lattice MachXO2 PLD we mentioned back in December? Well the MachXO2 Pico Development Kits are now available from Lattice Semi! The MachXO2 Pico Development Kit features the MachXO2 LCMXO2-1200ZE device, 1 Mbit SPI Flash, I2C temperature sensor, an expansion header for JTAG, SPI, I2C and GPIO interfaces, an LCD display and capacitive touch […]

Chip powers LED lamps in MR16 halogen bulb systems

This driver is used in LED replacement lamps for MR16 halogen bulb sockets. It’s compatible with common dimmers: The MAX16840, an LED driver that employs a proprietary architecture to ensure flicker-free, dimmable operation with electronic transformers and cut-angle dimmers. Maxim’s patent-pending approach enables the design of retrofit LED lamps that can replace halogen MR16s without […]

Bosch Sensortec BMP085 pressure sensor tests

In a comment on our STMicroelectronics MEMS pressure sensor post, jbeale offers his tests of the Bosch Sensortec BMP085 pressure sensor: The Bosch Sensortec BMP085 is slightly larger (5×5 mm) and has been out for some time. In its highest sensitivity mode it offers 0.01 hPa resolution and 0.03 hPa noise level. (Note: 1 millibar […]

More MAX3421E USB peripheral/host controller shields

Circuits@Home has two Arduino USB Peripheral/Host Controller shields with the MAX3421E we covered earlier. A driver is available for the Arduino, which should be portable to other microcontrollers. There are also libraries for working with USB devices, such as cameras, bluetooth devices, and simple Human Interface Devices like mice and keyboards.

Microchip expands 8-bit PIC® microcontroller lineup with new 20-pin chips

Microchip Technology Inc., today announced an expansion of its existing 28-/40-pin PIC16F72X microcontroller (MCU) family with two new 20-pin devices—the PIC16F(LF)720 and PIC16F(LF)721. The new MCUs feature low power consumption, making them suitable for various low-power and battery-powered applications. These MCUs offer up to 7 KB of self-write Flash program memory, a temperature-indicator module, an […]

Chip note: MCP7941X I2C RTCC with EEPROM, SRAM, Unique ID and Battery Switchover

Microchip’s MCP79411 general purpose I2C™Compatible real-time clock/calendar (RTCC) is highly integrated with nonvolatile memory and advanced features including a battery switchover circuit for backup power, a timestamp to log power failures and digital trimming for accuracy. It can use a low-cost 32.768 kHz crystal or other clock source and the chip operates over a supply […]

555 based FPGA/CPLD debugging oscillator

Randomgarfield from fromorbit posted the above video, depicting his use of a 555 timer as a small oscillator tο clock CPLDs whіƖе debugging a small state machine. I needed a variable slow speed clock to help me debug a design I’m creating with a bunch of CPLDs. Given the current focus on the venerable 555 […]