PragmatIC Releases Flexible 6502 Processor, Reviving Classic Architecture

Western Design Center continues to support the 6502 architecture, reporting that licensees have shipped more than 6 billion embedded 65xx processors—an annual growth of several hundred million units.

PragmatIC Semiconductor is redefining retro innovation. After embedding an ARM Cortex‑M0 on a flexible substrate, the company has now released a flexible version of the legendary 6502 processor.

For many, the 6502 evokes the excitement of the 1980s—when a budget‑conscious hobbyist could fork a few savings to purchase a BBC Micro, the quintessential 6502‑based computer that would later inspire countless programmers.

The 6502 was conceived at MOS Technology by a team led by Bill Mensch, who left Motorola after the company deemed the 6800’s price too high for mass adoption. Launched in 1975, the 6502’s low cost and simple design made it a favorite for pioneers such as Steve Jobs and Steve Wozniak, who built the Apple‑1 around it.

Over the decades, the chip and its variants powered landmark machines—including the Apple II, Commodore PET, Commodore 64, BBC Micro, and classic gaming consoles like the Nintendo Entertainment System and Atari 2600. Western Design Center still supports the core, and its licensees have shipped more than 6 billion embedded 65xx processors worldwide.

PragmatIC’s flexible 6502 was laid out and manufactured in less than two weeks. (Source: PragmatIC)

PragmatIC claims that its FlexIC Foundry enabled the flexible 6502 to be designed and fabricated in under two weeks, underscoring the rapid‑development capabilities of its silicon‑on‑flex technology. A second iteration has already been taped out, optimizing pin‑out, footprint and speed, a feat that would be unattainable with traditional silicon foundries.

Bill Mensch, founder of Western Design Center and co‑designer of the original 6502, remarked, “What PragmatIC is doing is as transformational as what we achieved at MOS Technology in the 1970s. Validating the 6502 design on their FlexIC Foundry allows us to extend its original mission to embedded processing for the Internet of Everything.”

Looking ahead, PragmatIC says it will soon unveil applications that leverage the Flex6502. “Our primary goal is to provide an IP core that our FlexIC customers can integrate easily into their own designs, enabling compute functionality alongside sensors and RF modules for connected devices,” the spokesperson explained.

The company has also released a netlist for an enhanced 6502 design that includes additional instructions. Crucially, the processor can operate at variable speeds or pause, maintaining its state until it is resumed—allowing designers to lower power consumption when the device is idle.

> This article was originally published on our sister site, EE Times.

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