A customer's equipment used an operator control panel employing Denso D880 illuminated LCD keyswitches.
The equipment was becoming unusable because these keyswitches were failing. They were obsolete
and even reclaimed devices could not be obtained. Our solution was a redesign
of the electronic modules containing them, based around
SMARTSWITCHTM devices (IS-15 series) from NKK.
Using an Actel A42MX
series FPGA and modern ICs instead of the MSI, PALs and discrete devices used in the
original design also had a beneficial impact on the power consumption of the replacenent
module. The reduced size allowed the adoption of a single PCB in place of the stacked PCB construction
employed previously. ASIC Solutions supplies assembled and tested modules through the OEM to
the end users of the equipment.