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Institute of Neuroinformatics

The ROLLS chip

Description and features of the ROLLS chip

ROLLS package

ROLLS: 256 Multi Neuron chip, Revision One.

Features

Technology AMS0.18u CMOS 6M
Size 51.40 mm2 (9380.12um x 5480.12um)
PADs Number 368 (220 for core block and 148 for Neural Signal Processing block)
Package PGA447.pdf (PDF, 391 KB)
Pin Information Pin_Infor_ROLLS.ods (ODS, 92 KB)
Bonding Diagram Bonding_Diagram_ROLLS.pdf (PDF, 3 MB)

 

Neurons

 Adaptive I&F neurons:  1x256

Synapses

Learning/Plastic 256x256
Programmable/Short-term dynamics 256x256 (selectable as excitatory or inhibitory)
Linear excitatory 256x2 (different dynamics)
Linear inhibitory 256x1
Virtual AER programmable/4 bit precision 256x1

General description

  • On-chip bias generator.
  • Configurable recurrent connectivity.
  • Broadcast/multicast option.
  • Recurrent and multicast options are programmable through latches inside synapse cells.

 

For more details see:

Manual_ROLLS.odt

Manual_ROLLS_v01.odt

Block diagram

Circuit blocks of the ROLLS chip
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