8051 mcu, von Neumann vs Harvard Architectures

We can classify computer architectures into two categories:

von Neumann architecture: computers has a single, common memory space in which both program instructions and data are stored. There is a single internal data bus that fetches both instructions and data. They can not be performed at
the same time

Harvard architecture: computers have separate memory areas for program instructions and data. There are two or more internal data buses, which allow simultaneous access to both instructions and data. The CPU fetches program instructions on the program memory bus.

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A Guide to ARM Microcontroller

This guide suit a beginner who are going to learn ARM Microcontroller>>>.

Understanding Processor Architecture: Simplify Computer Complexity

I have updated an article for the series on "Understanding Processor Architecture":

Understanding Processor Architecture: Simplify Computer Complexity >>>

AVR flash MCUs roll for high-volume USB apps

Expanding its family of AVR MCUs, Atmel has launched two new devices for high-volume USB applications ranging from HID to wireless adaptors.... More>>>

Atmel 8051 MCUs roll for high-volume USB apps

Atmel unrolled 8051-based USB MCUs that feature a USB Full-Speed controller, UART, SPI and a two-wire interface allowing an easy connection to companion devices.... Source: http://www.eetasia.com/ART_8800456879_1034362_c187178820070316.HTM?from=RSS

Configurable ARM-powered SoCs target Linux devices

STMicroelectronics (ST) is sampling a pair of configurable SoCs (system-on-chip processors) powered by ARM9 cores and 600K-gate configurable logic blocks. The SPEAr (structured processor enhanced architecture) Head600 and dual-core SPEAr Plus600 run Linux, support DDR/DDR2 external memory, and target printer, fax, and POS (point-of-sales) devices.... More>>>

Malaysia develops 'smallest' RFID chip

After two years of R&D, the Malaysia Microchip Project gains success with the release of the world's 'smallest' RFID microchip.... More

NEC expands MCU line for inverter control apps

NEC Electronics has added six highly integrated devices to its 32bit RISC MCU product portfolio for inverter-control systems.... Source: http://www.eetasia.com/ART_8800451964_1034362_d2fdd5b620070206.HTM?from=RSS 

Evaluation for 32bit ARM7-based MCUs

Low-cost evaluation board is based on the STR750FV2T6 processor - the latest series of super-integrated single-chip 32bit ARM7-based MCUs from STMicroelectronics.... Source: http://rss1.mediafed.com/feed/protalk/electronics/?link=0c4f1274eda21e674c5e04d05613d530 

18-bit ADC in SOT-23 package

Microchip claims its MCP3421 ADC is the highest resolution ADC available in a 6-pin SOT-23 package. The low-power, 18-bit, delta-sigma device features an integrated voltage reference, oscillator and programmable gain amplifier. This reduces the need for external components and enables a smaller overall design. The ADC uses an I²C compatible serial interface, operates from a single power supply (2,7 to 5,5 V), and consumes just 155 μA during continuous conversion at 5 V. The onboard PGA allows users to select gains of x1, x2, x4 or x8 before the A-to-D conversion takes place, allowing very high-resolution conversion of even small input signals.... Source: http://dataweek.co.za/news.aspx?pklNewsId=23425