ARM2 microprocessor. This is the first ARM chip which saw mass production, and has a number of improvements over the ARMv1.
This chip is an early production ARM2 which was found to be faulty and removed from an Acorn Archimedes series workstation.
Package
PLCC, 84 pins.
(VLSI logo) 8839AV I8581 VL2333-QC ARM ACORN
Die
2333 ACORN AV 005 ARM2UM
(The chip geometry is reportedly 2um, so “ARM2UM” could simply mean “ARM, 2um”)
Chip contains designer credits:
SBF ARW JSU HEO JRS DWH
These are the same people as the ARM3:
- SBF: Steve Furber
- ARW: Sophie Wilson
- JSU: Jamie Urquhart
- HEO: Harry Oldham
- JRS: Jim Sutton
- DWH: Dave Howard
The only chip art present is the Acorn nut logo at top-right near the layer/diffusion identifiers. The Acorn logo text with slanted A is bottom-centre above the I/O pads, the credits are bottom-right, and the die identifiers are at top left among the I/O pads.
- Single (14827×15078, 37.7134MiB)
