Editing vti/vl86cx/vl86c020

{{vti title|VL86C020}}
{{chip
|name=VL86C020
|no image=No
|designer=Acorn Computers
|manufacturer=VLSI Technology
|manufacturer 2=Sanyo
|model number=VL86C020
|part number=VL86C020-20FC
|part number 2=VL86C020-20GC
|part number 3=VY86C020-20FC
|part number 4=VY86C020-20GC
|part number 5=VY86C020-25FC
|market=Embedded
|market 2=Desktop
|first launched=1989
|family=VL86Cx
|frequency=20 MHz
|frequency 2=25 MHz
|isa=ARMv2a
|isa family=ARM
|microarch=ARM3
|chipset=MEMC
|chipset 2=VIDC
|chipset 3=IOC
|process=1.5 µm
|transistors=309,656
|technology=CMOS
|die area=86.764 mm²
|die length=8.72 mm
|die width=9.95 mm
|word size=32 bit
|core count=1
|thread count=1
|max cpus=1
|max memory=64 MiB
|max memory addr=0x3FFFFFF
|power=2 W
|v core=5
|v core tolerance=5 %
|tstorage min=-65 °C
|tstorage max=-150 °C
|tambient min=-10 °C
|tambient max=80 °C
|package module 1={{packages/vti/pqfp-160}}
|package module 2={{packages/vti/pga-144}}
}}
'''VL86C020''' is a {{arch|32}} [[ARM]] microprocessor designed by [[Acorn]] and introduce by [[vti|VTI]] in [[1989]]. This processor is based on the {{acorn|ARM3|l=arch}} microarchitecture and was Acorn's second commercial ARM processor. This chip was manufactured on [[VLSI Technology|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 {{\\|VL86C010|predecessor}} thanks to its higher clock speed and on-die cache.

== Cache ==
{{main|acorn/microarchitectures/arm3#Memory_Hierarchy|l1=ARM3 § Cache}}
{{cache size
|l1 cache=4 KiB
|l1 break=1x4 KiB
|l1 desc=64-way set associative
|l1 policy=write-through
}}

== Second source ==
This microprocessor was second-sourced by [[Sanyo]].

== Systems ==
{{collist
| count = 2
|
* [[used by::Acorn Archimedes A500]], 1987
* [[used by::Acorn Archimedes A540]], 1990
* [[used by::Acorn R225]], 1990
* [[used by::Acorn R260]], 1990
* [[used by::Acorn Archimedes A5000]], 1991
* [[used by::Acorn A4]], 1992
* [[used by::Acorn Archimedes A5000 (Alpha)]], 1993
}}

<small>'''Note:''' The A500 predates the actual chip introduction because it was never commercially sold.</small>

== Datasheet ==
* [[:File:VL86C020 DS.pdf|VL86C020 Datasheet]], 1990
Has subobject "Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.	VL86C020 - VTI#package +
base frequency	20 MHz (0.02 GHz, 20,000 kHz) +, 25 MHz (0.025 GHz, 25,000 kHz) +, 33 MHz (0.033 GHz, 33,000 kHz) + and 36 MHz (0.036 GHz, 36,000 kHz) +
chipset	MEMC +, VIDC + and IOC +
core count	1 +
core voltage	5 V (50 dV, 500 cV, 5,000 mV) +
core voltage tolerance	5 % +
designer	Acorn Computers +
die area	86.764 mm² (0.134 in², 0.868 cm², 86,764,000 µm²) +
die length	8.72 mm (0.872 cm, 0.343 in, 8,720 µm) +
die width	9.95 mm (0.995 cm, 0.392 in, 9,950 µm) +
family	VL86Cx +
first launched	1989 +
full page name	vti/vl86cx/vl86c020 +
instance of	microprocessor +
isa	ARMv2a +
isa family	ARM +
l1$ description	64-way set associative +
l1$ size	4 KiB (4,096 B, 0.00391 MiB) +
ldate	1989 +
manufacturer	VLSI Technology + and Sanyo +
market segment	Embedded + and Desktop +
max ambient temperature	353.15 K (80 °C, 176 °F, 635.67 °R) +
max cpu count	1 +
max memory	64 MiB (65,536 KiB, 67,108,864 B, 0.0625 GiB, 6.103516e-5 TiB) +
max memory address	0x3FFFFFF +
max storage temperature	123.15 K (-150 °C, -238 °F, 221.67 °R) +
microarchitecture	ARM3 +
min ambient temperature	263.15 K (-10 °C, 14 °F, 473.67 °R) +
min storage temperature	208.15 K (-65 °C, -85 °F, 374.67 °R) +
model number	VL86C020 +
name	VL86C020 +
package	PQFP-160 + and PGA-160 +
part number	VL86C020-20FC +, VL86C020-20GC +, VY86C020-20FC +, VY86C020-20GC +, VY86C020-25FC + and VY86C020-35PSGC +
power dissipation	2 W (2,000 mW, 0.00268 hp, 0.002 kW) +
process	1,500 nm (1.5 μm, 0.0015 mm) +
smp max ways	1 +
technology	CMOS +
thread count	1 +
transistor count	309,656 +
used by	Acorn Archimedes A500 +, Acorn Archimedes A540 +, Acorn R225 +, Acorn R260 +, Acorn Archimedes A5000 +, Acorn A4 + and Acorn Archimedes A5000 (Alpha) +
word size	32 bit (4 octets, 8 nibbles) +