Am386

The Am386 processor family was a copy of the Intel i386 and thus AMD's version of the 80386 generation. In contrast to the Am386 Am486 later is still a complete copy of the i386 and does not include any in-house development of AMD.

It gave him in various versions and also the highest clocked 80386 is located under these CPUs. The stroke rates were 16 to 40 MHz and AMD was able to outperform Intel for the first time in the clock rate. Partial needed the CPUs do not even have a heatsink. Due to the low price of this Am386DX -40 to a very common and popular CPU beginning of the 1990s was.

  • 3.1 Am386DX/DXL/DXLV
  • 3.2 Am386SX/SXL/SXLV
  • 3.3 Am386DE
  • 3.4 Am386SE

Litigation with Intel

The appearance of the CPU in 1991 ( five years after the Intel i386) was preceded by a long-standing dispute in the Intel AMD tried to stop at the delivery of the Am386. Background was a manufacturing agreement between Intel and AMD - which came under pressure from IBM, and was also with other semiconductor manufacturers - which allowed AMD to take copies of the Intel CPUs under its own name and sell it. With the introduction of the 80386 generation Intel AMD refused but the necessary production documents by pointing out that the agreement was only valid until 80286 and was a legal case against the former partner. Finally, AMD won the lawsuit and could deliver the Am386.

Architecture

Am386DX

  • Max. Addressable Memory: 4 GB
  • Processing width: 32 bits
  • Data bus: 32 bits
  • Address bus: 32 bit

Am386SX

  • Max. Addressable Memory: 16 MB
  • Processing width: 32 bits
  • Data bus: 16 bits
  • Address bus: 24 bit

Due to the external 16-bit data bus using 80286 chipsets is cheaper possible.

Model data

Am386DX/DXL/DXLV

The Am386DX fully complies with the Intel i386DX.

Specifications

  • Am386DXL: Low- power version with power save mode and static clock / static core
  • Am386DXLV: low-voltage variant with additional system management mode, otherwise Am386DXL
  • L1 cache: No
  • L2 cache: the mainboard dependent
  • Design: PQFP 132- pin or 132- pin PGA
  • Operation voltage ( Vcore ): Am386DX and Am386DXL: 5V
  • Am386DXLV: 3.3 V to 4.5 V
  • Am386DX and Am386DXL: March 1991
  • Am386DXLV: October 1991

Am386SX/SXL/SXLV

The Am386SX fully complies with the Intel i386SX.

Specifications

  • Am386SXL: Low- power version with power save mode and static clock / static core ( maximum clock frequency to 0 MHz)
  • Am386SXLV: low-voltage variant with additional system management mode, otherwise Am386SXL
  • L1 cache: No
  • L2 cache: No
  • Type: 100-pin PQFP
  • Operation voltage ( Vcore ): Am386SX and Am386SXL: 5V
  • Am386SXLV: 3.3V to 5V
  • Am386SX and Am386SXL: July, 1991
  • Am386SXLV: October 1991

Am386DE

Embedded version of Am386DX. This CPU is part of the AMD Embedded E86 family.

Specifications

  • L1 cache: No
  • L2 cache: No
  • Design: PQFP 132- pin PGA and
  • Operation voltage ( Vcore ): ?
  • Release Date: 1995
  • Manufacturing Technology:
  • The size?
  • Clock speeds: 25 and 33 MHz

Am386SE

Embedded version of Am386SX. This CPU is part of the AMD Embedded E86 family.

Specifications

  • L1 cache: No
  • L2 cache: No
  • Type: 100-pin PQFP
  • Operation voltage ( Vcore ): ?
  • Release Date: 1995
  • Manufacturing Technology:
  • The size?
  • Clock speeds: 25 and 33 MHz
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