The

Intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California. It is the world's largest semiconductor chip manufacturer by revenue, and is one of the developers of the x86 seri ...

80386EX (''386EX'') is a variant of the

Intel 386 The Intel 386, originally released as 80386 and later renamed i386, is a 32-bit microprocessor introduced in 1985. The first versions had 275,000 transistors microprocessor A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circu ...

designed for

embedded system An embedded system is a computer system—a combination of a computer processor, computer memory, and input/output peripheral devices—that has a dedicated function within a larger mechanical or electronic system. It is ''embedded'' as ...

s. Introduced in August 1994 and was successful in the market being used aboard several

orbit In celestial mechanics, an orbit is the curved trajectory of an object such as the trajectory of a planet around a star, or of a natural satellite around a planet, or of an artificial satellite around an object or position in space such as a p ...

ing

satellites A satellite or artificial satellite is an object intentionally placed into orbit in outer space. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioisotop ...

and

microsatellites A microsatellite is a tract of repetitive DNA in which certain DNA motifs (ranging in length from one to six or more base pairs) are repeated, typically 5–50 times. Microsatellites occur at thousands of locations within an organism's genome. ...

. Intel did not manufacture another integrated

x86 x86 (also known as 80x86 or the 8086 family) is a family of complex instruction set computer (CISC) instruction set architectures initially developed by Intel based on the Intel 8086 microprocessor and its 8088 variant. The 8086 was introd ...

processor until 2007, when it confirmed the Enhanced Pentium M-based

Tolapai Tolapai is the code name of Intel's embedded system on a chip (SoC) which combines a Pentium M (Dothan) processor core, DDR2 memory controllers and input/output (I/O) controllers, and a ''QuickAssist'' integrated accelerator unit for security functi ...

(''EP80579'').

Characteristics

* Introduced August 1994 * Variant of

80386SX The Intel 386, originally released as 80386 and later renamed i386, is a 32-bit microprocessor introduced in 1985. The first versions had 275,000 transistors embedded system An embedded system is a computer system—a combination of a computer processor, computer memory, and input/output peripheral devices—that has a dedicated function within a larger mechanical or electronic system. It is ''embedded'' as ...

s * 26-bit memory addressing for up to 64 MiB of DRAM * 16-bit data bus, limiting performance but reducing system cost *

Static core Static core generally refers to a microprocessor (MPU) entirely implemented in static logic. A static core MPU may be halted by stopping the system clock oscillator that is driving it, maintaining its state and resume processing at the point ...

, 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 A watchdog timer (sometimes called a ''computer operating properly'' or ''COP'' timer, or simply a ''watchdog'') is an electronic or software timer that is used to detect and recover from computer malfunctions. Watchdog timers are widely used in ...

** serial I/O units (synchronous and asynchronous) and parallel I/O ** DMA ** RAM refresh **

JTAG JTAG (named after the Joint Test Action Group which codified it) is an Technical standard, industry standard for verifying designs and testing printed circuit boards after manufacture. JTAG implements standards for on-chip instrumentation in ele ...

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 The Ericsson R290 is a combined GSM and satellite phone using the Globalstar satellite network. The R290 was introduced in June 1999 and manufactured in the United Kingdom by Ericsson Mobile Communications. The Globalstar uses a foldable antenna ...

and Globalstar/Qualcomm GSP-1600 satellite phone. * Used in many older Garmin GPS units, such as the GPS 48, II, III, and 12. * Used in Akai S5000 & S6000 digital samplers. * Used in

Nokia 9000 Communicator The Nokia 9000 Communicator was the first product in Nokia's Communicator series, announced at CeBIT 1996 and introduced into the market on 15 August 1996. The phone was large and heavy at but powerful at the time. It is powered by an Intel 24&nb ...

phone.https://www.mobilecollectors.net/files_large/img_7028_jpg_large.jpg * Used in Swarco ITC-2 traffic light controller.

References

External links

386EX characteristics
Intel x86 microprocessors, 80386Ex {{microcompu-stub

Characteristics

See also

References

External links