Intel 80386EX

The Intel 80386EX (386EX) is a variant of the Intel 386 microprocessor designed for embedded systems. Introduced in August 1994 and was successful in the market being used aboard several orbiting satellites and microsatellites.

Intel did not manufacture another integrated x86 processor until 2007, when it confirmed the Enhanced Pentium M-based Tolapai (EP80579).^[1]

Characteristics

Introduced August 1994
Variant of 80386EX intended for embedded systems
26-bit memory addressing for up to 64 MiB of DRAM
Static core, i.e. may run as slowly (and thus, power efficiently) as desired, down to full halt
On-chip peripherals:
- clock and power management
- timers/counters
- watchdog timer
- serial I/O units (synchronous and asynchronous) and parallel I/O
- DMA
- RAM refresh
- JTAG test logic
Significantly more successful than the 80376
Used aboard several orbiting satellites and microsatellites
Used in NASA's FlightLinux project
Used in USRobotics Courier I modem V.everything (Internal ISA and External RS232 ISDN Terminal Adapters with 56KBPS analog remote access server).
Used in Ericsson R290 satellite phone
Used in many older Garmin GPS units, such as the GPS 48, II, III, and 12.^[2]^[3]

This microcomputer- or microprocessor-related article is a stub. You can help Wikipedia by expanding it.