AMD Élan

Lore & Background

The Élan series debuted in October 1993 with the SC300 and SC310, integrating a 32-bit, x86-compatible, low-voltage 25 MHz or 33 MHz Am386SX CPU with a memory controller, PC/AT peripheral controllers, real-time clock, PLL clock generators, and an ISA bus interface. The SC300 additionally included two PCMCIA 2.1 slots and a CGA-compatible LCD controller. Power consumption at 33 MHz was only 600 mW including CPU, memory controller and peripherals, dropping to 0.17 mW in suspend mode. The low-budget 9.7-inch laptop Brother GeoBook NB60 used the SC300.

The SC400 and SC410, announced on October 15, 1996, combined a 32-bit, x86-compatible, low-voltage 33 MHz, 66 MHz or 100 MHz Am486 CPU with memory controller, PC/AT peripheral controllers, real-time clock, PLL clock generators, VESA Local Bus, and ISA bus interface. The SC400 added two PCMCIA 2.1 slots and a 4-bit color STN LCD controller. The C64 "Web.it" Internet Computer used an SC400 with 16 MB of RAM, a 3.5-inch floppy disk drive, 56k modem, and PCMCIA. The AirPort Base Station used an SC410, and the Nokia 9110 Communicator used an SC450.

The SC520, announced on August 25, 1999, combined a 32-bit, x86-compatible, low-voltage 100 MHz or 133 MHz Am5x86 CPU with memory controller supporting SDRAM, PC/AT peripheral controllers, real-time clock, and PCI bus; ISA and PCMCIA were no longer supported. The Élan processors saw reasonable use in the embedded world until the product line was suddenly discontinued when AMD acquired the Geode division from National Semiconductor in August 2003.

Reader's Guide

The AMD Élan family represents an early and sustained effort by AMD to serve the embedded systems market with x86-compatible system-on-chip solutions. By integrating a CPU core with PC/AT-compatible peripherals, memory controllers, and bus interfaces, the Élan series allowed embedded designers to leverage the vast x86 software ecosystem in power-constrained and space-limited applications. The long-term supply guarantee was a key selling point for industrial and commercial customers who required stable, predictable availability. The series progressed through three generations—SC3xx (Am386SX-based), SC4xx (Am486-based), and SC5xx (Am5x86-based)—each adding higher performance and updated bus standards, from ISA and VESA Local Bus to PCI and SDRAM support. Notable real-world deployments included the Brother GeoBook NB60 laptop, the C64 Web.it Internet Computer, the Apple AirPort Base Station, and the Nokia 9110 Communicator. The sudden discontinuation of the Élan line in August 2003, following AMD's acquisition of National Semiconductor's Geode division, ended a decade of embedded x86 SoC development under the Élan name. Despite its abrupt end, the Élan family demonstrated the viability of x86 architecture in embedded and mobile devices, paving the way for later AMD embedded offerings.

Did You Know?

• The Élan SC300 and SC310 were the first processors in the series, introduced in October 1993.
• The SC400 was announced on October 15, 1996, and used an Am486 CPU at up to 100 MHz.
• The Nokia 9110 Communicator used an AMD Élan SC450 SoC.
• The Élan line was discontinued in August 2003 after AMD acquired the Geode division from National Semiconductor.