Z0840004PSC Zilog, Z0840004PSC Datasheet - Page 10

• Manufacturer Part Number: Z0840004PSC
• Description: IC 4MHZ Z80 NMOS CPU 40-DIP
• Manufacturer: Zilog

Specifications of Z0840004PSC

• Processor Type: Z80
• Features: NMOS
• Speed: 4MHz
• Voltage: 5V
• Mounting Type: Through Hole
• Package / Case: 40-DIP (0.620", 15.75mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ZiLOG
2002Quality and Reliability Report
Product Characterization
Every ZiLOG product design is evaluated over extremes of operating temperature, supply
voltage, and clock frequency prior to production release. This information permits the proper
guardbanding of the test program waterfall and identification of any marginal “corners” in
design tolerances.
A product characterization summary, which details the more important tolerances identified in
the process of this exhaustive product design evaluation, is available to ZiLOG’s customers.
Process Qualification
ZiLOG also qualifies every process prior to production by an exhaustive stress sequence
performed on test chips and on representative products. Once a process regime is qualified, a
process re-qualification is performed any time there is a major process change, or whenever the
process template statistical quality limits are significantly exceeded or adjusted.
Product Qualification
In addition to characterization, every new ZiLOG product design is fully qualified by a
comprehensive series of life, electrical, and environmental tests before release to production.
Whenever possible, both industry standard environmental and life tests are employed. Again, a
qualification summary is available to our customers which details certain key life and
environmental data taken in the course of these evaluations. Please see Chapter Four
(Qualification Requirements) for an example of the ZiLOG Package Qualification Summary
and Device Qualification Summary.
PPM Measurement, Direct and Indirect
It is frequently said that if you want to improve something, you need to put a measure on it.
Therefore, ZiLOG measures its outgoing quality “parts per million” by the maintenance of
careful records on the statistical sampling of production lots prepared for shipment. This
information is then translated by our statisticians to a statement of our parts per million
outgoing quality performance.
Of course, it is one thing for ZiLOG to think it is doing a good job in outgoing product quality
and it is another for a customer to agree. Therefore, we ask certain key customers to provide us
with their incoming inspection data that helps us calibrate our outgoing performance in terms of
the actual results in the field. The fact that ZiLOG has been awarded “ship to stock” status by
many customers testifies to our success in this area.
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