In digital logic applications, bit-serial architectures send data one bit at a time, along a single wire, in contrast to bit-parallelword architectures, in which data values are sent all bits or a word at once along a group of wires.

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Almost all digital computers before 1951, and most of the early massive parallel processing machines used a bit-serial architecture—they were serial computers.

Bit-serial architectures were developed for digital signal processing in the 1960s through 1980s, including efficient structures for bit-serial multiplication and accumulation.^[1]

Often N serial processors will take less FPGA area and have a higher total performance than a single N-bit parallel processor.

See also[edit]

References[edit]

1. ^Denyer, Peter B.; Renshaw, David (1985). VLSI signal processing: a bit-serial approach. VLSI systems series. Addison-Wesley. ISBN978-0-201-13306-6.

External links[edit]

• Application of FPGA technology to accelerate the finite-difference time-domain (FDTD) method
• BIT-Serial FIR filters with CSD Coefficients for FPGAs

Retrieved from 'https://en.wikipedia.org/w/index.php?title=Bit-serial_architecture&oldid=909066581'

CHANDLER, Ariz., Dec. 02, 2019 (GLOBE NEWSWIRE) -- From smart meters to manufacturing lines, applications that require repetitive task data logging must be able to automatically restore content if power is disrupted during processing. Current low density (64 Kb to 1Mb) nonvolatile serial RAM (NVRAM) solutions used for these datalogs are typically the highest price-per-bit memory in the resulting end products. Microchip Technology Inc. (NASDAQ: MCHP) today announced a new family of Serial Peripheral Interface (SPI) EERAM memory products that offer system designers up to 25 percent cost savings over the current serial NVRAM alternatives. The family introduces four reliable SPI densities to Microchip’s EERAM portfolio, ranging from 64 Kb up to 1 Mb.

EERAM is a standalone nonvolatile RAM memory that uses the same SPI and I²C protocols as serial SRAM, enabling devices to retain SRAM content during power loss without using an external battery. All nonvolatile aspects of the part are essentially invisible to the user. When the device detects power going away, it automatically transfers the SRAM data to nonvolatile storage and moves it back to the SRAM once power returns to the part. In manufacturing lines, for example, stations handle up to millions of tasks over their lifetimes, and lost data during a task can require overhauling or discarding items. EERAMs automatically store SRAM content in these settings, allowing the manufacturing line to resume where the task was disrupted.
The primary reason EERAM is available at a lower price point is the use of standard Complementary Metal-oxide-semiconductor (CMOS) and Flash processes. Because these are the highest volume and most widely used processes, they offer the best reliability and lowest cost in the industry. Alternative solutions such as Ferroelectric RAM (FRAM) use a specialty process, resulting in much higher costs and unstable long-term supply. The new EERAM family comes with Microchip’s customer-driven obsolescence practice, which helps ensure availability to customers for as long as needed.
“EERAM gives system designers the reliable, cost-effective nonvolatile RAM solutions their systems require. We received a great response to our initial launch of 4 Kb and 16 Kb densities a few years ago,” said Randy Drwinga, vice president of Microchip’s memory products division. “This new family offers our first SPI interface products and extends to one megabit, giving customers more options to meet their system design needs.”

Pricing and Availability
The following devices are available in 8-pin SOIC, SOIJ and DFN packages in volume production. Pricing is in 10,000-unit quantities:

• 48L640 (64 Kb SPI), starting at $0.70
• 48L256 (256 Kb SPI), starting at $1.40
• 48L512 (512 Kb SPI), starting at $2.10
• 48LM01 (1 Mb SPI), starting at $2.90

For additional information, contact any Microchip sales representative or authorized worldwide distributor, or visit Microchip’s website. To purchase products mentioned in this press release, go to Microchip’s full-service channel microchipDIRECT or contact one of Microchip’s authorized distribution partners.

Resources
High-res images available through Flickr or editorial contact (feel free to publish):
• Application image: https://www.flickr.com/photos/microchiptechnology/49030471461

Video available through YouTube or editorial contact (feel free to post):
•https://vimeo.com/287480707

About Microchip Technology
Microchip Technology Inc. is a leading provider of smart, connected and secure embedded control solutions. Its easy-to-use development tools and comprehensive product portfolio enable customers to create optimal designs which reduce risk while lowering total system cost and time to market. The company’s solutions serve more than 120,000 customers across the industrial, automotive, consumer, aerospace and defense, communications and computing markets. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality. For more information, visit the Microchip website at http://www.microchip.com.

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