Esempi di
applicazioni
Motorola Semiconductor Quality
Control uses Wedge to input measurements into a VAX
Motorola Inc., Phoenix, AZ, is one of
the world's largest manufacturer of microprocessors. As there is no
margin for error in semiconductor manufacturing, Motorola has
developed a strict quality control system to ensure consistency and
accuracy. The system uses highly sensitive instruments (including
Prometrix VP10, RS50 and SM200) to measure wafer resistivity and
oxidation thickness. This data is fed into a computerized
statistical process control system running on a VAX mainframe during
the production of semiconductors to ensure accurate quality control.
Jim Paschal, a Software Engineer at
Motorola, wanted to input the data from the various serial output
gages into their VAX process control system. They considered manual
data entry too slow, costly and error-prone for this task. Custom
serial interface programs between the various instruments and their
VAX application were considered, but these would have been time
consuming and costly to produce.
The final solution was to capture
the data from these serial output gages and read the data directly
via the SoftwareWedge for Windows standard version (WinWedge) from
TAL Technologies, Inc. (800-722-6004, www.taltech.com) into a
terminal emulator on IBM compatible PCs. The terminal emulator (Reflection
by WRQ, Seattle, WA, 206-324-0407, www.wrq.com) transfers the data
from the PCs to the VAX mainframe for data analysis and collection.
Paschal noted that WinWedge was quickly and easily set-up to collect
real-time data from the many specialized quality control instruments
and transfer this critical information via the terminal emulator to
the VAX mainframe. WinWedge is installed on multiple com ports on
single PCs further simplifying the task of data acquisition from
many different devices simultaneously. The automated system ensures
Motorola quality control during semiconductor manufacturing.
Benefits
- 100% data accuracy
- Ability to interface to
mainframe system
- Cost effective solution
- Ability to interface multiple
instruments simultaneously
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