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VL86C020 - VTI
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VL86C020
General Info
DesignerAcorn Computers
ManufacturerVLSI Technology, Sanyo
Model NumberVL86C020
Part NumberVL86C020-20FC,
VL86C020-20GC,
VY86C020-20FC,
VY86C020-20GC,
VY86C020-25FC
MarketEmbedded, Desktop
Introduction1989 (launched)
General Specs
FamilyVL86Cx
Frequency20 MHz, 25 MHz
Microarchitecture
ISAARMv2a (ARM)
MicroarchitectureARM3
ChipsetMEMC, VIDC, IOC
Process1.5 µm
Transistors309,656
TechnologyCMOS
Die86.764 mm²
8.72 mm × 9.95 mm
Word Size32 bit
Cores1
Threads1
Max CPUs1 (Uniprocessor)
Max Memory64 MiB
Max Address Mem0x3FFFFFF
Electrical
Power dissipation2 W
Vcore5 ± 5 %
Tstorage-65 °C – -150 °C
Tambient-10 °C – 80 °C
Packaging
PackagePQFP-160 (PQFP)
Pin Count160
PackagePGA-160 (PGA)
Dimension28.10 mm x 28.10 mm x 3.85 mm
Pitch0.65 mm
Pin Count144

VL86C020 is a 32-bit ARM microprocessor designed by Acorn and introduce by VTI in 1989. This processor is based on the ARM3 microarchitecture and was Acorn's second commercial ARM processor. This chip was manufactured on VLSI's 1.5 µm process and operated at 20 MHz an 25 MHz.

This processor operates performs at over three times the performance of its predecessor thanks to its higher clock speed and on-die cache.

Cache[edit]

Main article: ARM3 § Cache

[Edit/Modify Cache Info]

hierarchy icon.svg
Cache Organization
Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory.

The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC.

Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies.

Note: All units are in kibibytes and mebibytes.
L1$4 KiB
0.00391 MiB
4,096 B
3.814697e-6 GiB
  1x4 KiB64-way set associativewrite-through

Second source[edit]

This microprocessor was second-sourced by Sanyo.

Systems[edit]

  • Acorn Archimedes A500, 1987
  • Acorn Archimedes A540, 1990
  • Acorn R225, 1990
  • Acorn R260, 1990
  • Acorn Archimedes A5000, 1991
  • Acorn A4, 1992
  • Acorn Archimedes A5000 (Alpha), 1993

Note: The A500 predates the actual chip introduction because it was never commercially sold.

Datasheet[edit]

Facts about "VL86C020 - VTI"
Has subobject
"Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.
VL86C020 - VTI#package +
base frequency20 MHz (0.02 GHz, 20,000 kHz) + and 25 MHz (0.025 GHz, 25,000 kHz) +
chipsetMEMC +, VIDC + and IOC +
core count1 +
core voltage5 V (50 dV, 500 cV, 5,000 mV) +
core voltage tolerance5 % +
designerAcorn Computers +
die area86.764 mm² (0.134 in², 0.868 cm², 86,764,000 µm²) +
die length8.72 mm (0.872 cm, 0.343 in, 8,720 µm) +
die width9.95 mm (0.995 cm, 0.392 in, 9,950 µm) +
familyVL86Cx +
first launched1989 +
full page namevti/vl86cx/vl86c020 +
instance ofmicroprocessor +
isaARMv2a +
isa familyARM +
l1$ description64-way set associative +
l1$ size0.00391 MiB (4 KiB, 4,096 B, 3.814697e-6 GiB) +
ldate1989 +
manufacturerVLSI Technology + and Sanyo +
market segmentEmbedded + and Desktop +
max ambient temperature353.15 K (80 °C, 176 °F, 635.67 °R) +
max cpu count1 +
max memory64 MiB (65,536 KiB, 67,108,864 B, 0.0625 GiB, 6.103516e-5 TiB) +
max memory address0x3FFFFFF +
max storage temperature123.15 K (-150 °C, -238 °F, 221.67 °R) +
microarchitectureARM3 +
min ambient temperature263.15 K (-10 °C, 14 °F, 473.67 °R) +
min storage temperature208.15 K (-65 °C, -85 °F, 374.67 °R) +
model numberVL86C020 +
nameVL86C020 +
packagePQFP-160 + and PGA-160 +
part numberVL86C020-20FC +, VL86C020-20GC +, VY86C020-20FC +, VY86C020-20GC + and VY86C020-25FC +
power dissipation2 W (2,000 mW, 0.00268 hp, 0.002 kW) +
process1,500 nm (1.5 μm, 0.0015 mm) +
technologyCMOS +
thread count1 +
transistor count309,656 +
used byAcorn Archimedes A500 +, Acorn Archimedes A540 +, Acorn R225 +, Acorn R260 +, Acorn Archimedes A5000 +, Acorn A4 + and Acorn Archimedes A5000 (Alpha) +
word size32 bit (4 octets, 8 nibbles) +