AMD Élan is a family of 32-bitembeddedSoCs marketed byAMD based onx86microprocessors. All of these products were backed with a long-term supply guarantee to meet the needs of embedded processors. However, when AMD acquired theGeode division fromNational Semiconductor in August 2003, the product was suddenly discontinued. The Élan processors saw a reasonable amount of use in the embedded world.[1][2]
In October 1993, AMD introduced theAm386SC processor, which integrated an Am386SXLV CPU core with a collection of PC/AT-compatible peripherals.[3] This processor, marketed as Élan SC300 and Élan SC310, was the first in AMD's Élan series of SoCs.[4]
The SC300 and SC310 combines a 32-bit, x86 compatible, low-voltage 25 MHz or 33 MHzAm386SX CPU withmemory controller,PC/AT peripheral controllers,real-time clock,PLL clock generators andISA bus interface. SC300 integrates in addition twoPCMCIA 2.1 slots and aCGA-compatibleLCD controller. Power consumption at 33 MHz was only 600 mW including CPU, memory controller and peripherals. Insuspend mode consumption reduces to 0,17 mW.[5][6][7][2] The low budget 9,7"laptopBrother GeoBook NB60 uses a SC300[8]
The SC400 and SC410 combines a 32-bit, x86 compatible, low-voltage 33 MHz, 66 MHz or 100 MHzAm486 CPU with memory controller, PC/AT peripheral controllers, real-time clock, PLL clock generators,VESA Local Bus and ISA bus interface. SC400 integrates in addition two PCMCIA 2.1 slots and a 4-bit colorSuper-twisted nematic display (STN) LCD controller.[9][7] TheC64 "Web.it" Internet Computer uses a SC400 with 16 MB of RAM, a 3.5"floppy disk drive, 56k-modem andPCMCIA.[10] TheAirPort Base Station uses a SC410,[11] theNokia 9110 Communicator a SC450.[12] AMD announced the SC400 on October 15, 1996.[13]
The SC520 combines a 32-bit, x86 compatible, low-voltage 100 MHz or 133 MHzAm5x86 CPU with memory controller supportingSDRAM, PC/AT peripheral controllers, real-time clock and PCI bus. ISA and PCMCIA were no longer supported.[14][7] AMD announced the SC520 on August 25, 1999.[15]
| Name | Clock speed | FSB | L1 Cache | Architecture | Technology | Package |
|---|---|---|---|---|---|---|
| SC300-25[5] | 25 MHz | 25 MHz | – | Am386 | 700 nm | 208-pinQFP 208-pinTQFP |
| SC300-33[5] | 33 MHz | 33 MHz | – | |||
| SC310-25[6] | 25 MHz | 25 MHz | – | |||
| SC310-33[6] | 33 MHz | 33 MHz | – | |||
| SC400-33[9] | 33 MHz | 33 MHz | 8 kB | Am486 | 350 nm | 292-pinBGA |
| SC400-66[9] | 66 MHz | 33 MHz | 8 kB | |||
| SC400-100[9] | 100 MHz | 33 MHz | 8 kB | |||
| SC410-33[9] | 33 MHz | 33 MHz | 8 kB | |||
| SC410-66[9] | 66 MHz | 33 MHz | 8 kB | |||
| SC410-100[9] | 100 MHz | 33 MHz | 8 kB | |||
| SC450-33 | 33 MHz | 33 MHz | 8 kB | |||
| SC520-100[14] | 100 MHz | 33 MHz | 16 kB | Am5x86 | 350 nm | 388-pin PBGA |
| SC520-133[14] | 133 MHz | 33 MHz | 16 kB |
