mcu News - Page 46 of 58 - CNX Software

December 7, 2016 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Nordic Semi Unveils nRF52840 Bluetooth 5 Ready SoC and Development Kit

Nordic Semiconductor nRF52xx Bluetooth and 2.4 GHz solutions are very often found in development kits and low power devices such as wearables, and it’s no surprise that the company introduced a new nRF52840 SoC supporting Bluetooth 5, the new standard promising twice the range, and four times the speed of BLE 4.x, as well as ANT, 802.15.4, 2.4GHz proprietary, and NFC connectivity. Nordic Semi nRF52840 key features and specifications: MCU – 32-bit ARM Cortex-M4 @ 64 MHz with with FPU Memory & Storage – 256 KB RAM, 1MB Flash Connectivity Bluetooth 5-ready multiprotocol radio Bluetooth 5 data rate support: 2 Mbps, 1 Mbps, 500 kbps, 125 kbps 104 dB link budget for Bluetooth low energy -96 dBm sensitivity for Bluetooth low energy Programmable output power from +8 dBm to -20 dBm NFC-A tag on chip Single-ended antenna output (on-chip balun) I/Os USB – Full-speed 12 Mbps USB controller SPI up […]

November 23, 2016 by Jean-Luc Aufranc (CNXSoft) - 11 Comments

OnChip Open-V Open Source 32-bit RISC-V Processor Launched on CrowdSupply

Open source hardware gives mostly full control over software and hardware, but there are different levels of openess, with some companies wrongly claiming their product to be open source hardware – with a nice accompanying logo – once they dump some source code somewhere and publish the PDF schematics, while others are doing it right with the release of schematics and PCB layout in source format, as well as software and proper documentation. However even for the latter group, the actual chips are closed source bought directly from silicon vendors or their distributors. So the good news is that you now have the opportunity to bring the meaning of open source hardware to a whole new level thanks to OnChip Open-V 32-bit processor that is open source, and getting launched on Crowd Supply crowdfunding platform. OnChip Open-V is based on RISC-V (pronounced “risk-five”), comes with peripherals, and should be competitive […]

October 26, 2016October 26, 2016 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

ARM Introduces Secure Cortex-M23 and Cortex-M33 ARMv8-M MCU Cores, and Bluetooth 5 Cordio Radio IP for IoT Applications

ARM TechCon 2016 is now taking place in Santa Clara, California, USA, as ARM has made three announcements for the Internet of Things, the focus of SoftBank going forward, with two ARM Cortex-M ARMv8-M cores integrating ARM TrustZone technology, namely Cortex-M23 low power small footprint core, and Cortex-M33 core with processing power similar to Cortex-M3/M4 cores, as well as Cordio Radio IP for Bluetooth 5 and 802.15.4 connectivity. ARM Cortex-M23 ARM Cortex-M23, based on the ARMv8-M baseline architecture, is the smallest and most energy efficient ARM processor with TrustZone security technology,and targets embedded applications requiring both a small footprint, low power, and security. Its power consumption is low enough to be used in batteryless, energy harvesting IoT nodes, and is roughly a third of Cortex-M33 processor size, and offers more than twice its energy efficiency. Cortex-M23 is a two-stage pipelined processor, software compatible with other processors in the Cortex-M family. […]

October 25, 2016October 25, 2016 by Jean-Luc Aufranc (CNXSoft) - No Comments

NXP Unveils MCUXpresso Development Tools for LPC and Kinetis Microcontrollers

After NXP bought Freescale, you had development tools for Freescale Kinetis MCUs such as Design Studio or Kenetis SDK, and others such as LPCXpresso for NXP LPC microcontrollers. The company has worked to unifying software and tools support between its ARM Cortex-M MCU families, and has now announced MCUXPresso software and tools for both NXP Kinetis and LPC MCUs. MCUXpresso unifies thousands of Kinetis and LPC microcontrollers under a set of compatible tools including MCUXpresso SDK – Open-source software MISRA-compliant development kit (SDK) with peripherals drivers, wireless & wired connectivity stacks, middleware, real-time OS, getting started guides, API documentation, and application examples. MCUXpresso IDE – Integrated development environment (IDE) for editing, compiling and debugging. It also integrates MCU-specific debugging views, code trace and profiling, multicore debugging, etc… Both free and professional edition of the IDE will be available, and LPCXpressor and previously Freescale Freedom & Tower platforms will be supported. […]

August 3, 2016January 17, 2022 by Jean-Luc Aufranc (CNXSoft) - 15 Comments

What’s the Cheapest MCU? My Try: Holtek HT48R002 8-bit MCU Selling for $0.085

Somebody asked what was the cheapest MCU (Microcontroller) available on Google+, so I thought it would be fun to find the cheapest one regardless of specifications. It turns out there an older thread with this very question on StackExchange, and at the time (2011) Microchip PIC10F200 8-bit MCU with 256B RAM in SOP-23 package was the cheapest one among the answer, and somehow the price has not changed as it’s still $0.32 per unit for 1k orders. Not a bad price, but back in the days when I wrote on CD and DVD players, we had some price pressure from customers, so we looked for a cheaper microcontroller, and ended up using Holtek because of the competitive pricing. We suffered a bit during development due to incomplete documentation but eventually did the job. Anyway, I went to the Holtek website and found a “cost-effective I/O MCU” category, and HT48R002 appears […]

August 2, 2016August 2, 2016 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Samsung JerryScript is a Lightweight Open Source JavaScript Engine for the Internet of Things

In the old days, micro-controller programming was all done in assembly or C, but in recent years higher level languages, included interpreted ones such as Python and JavaScript, have made their ways into MCUs with projects such as MicroPython or Espruino (JS) often running on STMicro STM32 ARM Cortex M micro-controllers, but also other platforms such as ESP8266. As I browsed through the Embedded Linux Conference Europe 2016 schedule, I discovered that Samsung worked on it own implementation of a JavaScript engine for the Internet of Things: JerryScript. It is a full implementation of ECMAScript 5.1 standard written in C that can run on micro-controllers with less than 64KB RAM, and less than 200KB storage (160KB footprint with ARM Thumb-2 compilation). JerryScript is comprised of two main components: Parser and Virtual Machine (VM), with the parser performing translation of input ECMAScript application into byte-code than is then executed by the Virtual […]

July 12, 2016July 12, 2016 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

SiFive Introduces Freedom U500 and E500 Open Source RISC-V SoCs

Open source used to be a software thing, with the hardware design being kept secret for fear of being copied, but companies such as Texas Instruments realized that from a silicon vendor perspective it would make perfect sense to release open source hardware designs with full schematics, Gerber files and SoM, to allow smaller companies and hobbyists, as well as the education market, normally not having the options to go through standard sales channels and the FAE (Field Application Engineer) support, to experiment with the platform and potentially come up with commercial products. That’s exactly what they did with the Beagleboard community, but there’s still an element that’s closed source, albeit documented: the processor itself. But this could change soon, as SiFive, a startup founded by the creators of the free and open RISC-V architecture, has announced two open source SoCs with Freedom U500 processor and Freedom E300 micro-controller. Freedom […]

June 21, 2016June 21, 2016 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Fireduino Arduino Compatible Board Features Rockchip RKnanoD Dual Core Cortex-M3 MCU (Crowdfunding)

Rockchip RKNanoD dual core Cortex M3 micro-controller was introduced last year for IoT and audio applications, and the Firefly team, known for their FirePrime or Firefly-RK3288 development boards, has designed an Arduino compatible board based on the MCU with lots of audio ports, Arduino headers, and WiFi connectivity. Fireduino specifications: MCU – Rockchip RKnanoD dual core ARM Cortex M3 MCU @ up to 250 MHz (system core) / 500 MHz (calculate core) with respectively 640 KB and 384 KB RAM Storage – 4 or 8MB SPI flash + micro SD slot Audio 24-bit/192 KHz audio codec (built in MCU) with HW accelerator for APE, FLAC, OGG, and MP3 audio decoding 1x 3.5mm analog audio jack 2x 3.5mm LINE In jacks 1x On-board microphone DLNA wireless audio support Connectivity – 802.11 b/g/n WiFi via Ampak AP6181 module Expansion Arduino header with I2C, SPI, ADC, GPIO, PWM, UART LCD interface (Intel 8080 […]