Z0840004PSC Zilog, Z0840004PSC Datasheet - Page 82

• 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
2002 Quality and Reliability Report
CHAPTER 8
Statistical Process Control
STATISTICAL PROCESS CONTROL
SCOPE:
All major manufacturing processes are under SPC control Process stability and capability analyses
are reported monthly.
A corporate-wide specification defines the scope of the program and provides detailed instructions
for implementing SPC at an operation. It also defines the frequency of evaluation of control limits,
training requirements, and responsibilities (SOP0918)
CONTROL CHARTS:
ZiLOG (Nampa) uses the 8-Point Zone Control Chart. The Zone Control Chart is easily adapted to
nonstandard distributions. All Technicians are certified on the use of the Zone Control Chart.
Control limits and out-of-control action plans are written into the process specifications. Control
limits are changed as process improvements are implemented.
DESIGN OF EXPERIMENTS:
New processes require rigorous qualification through one or more Statistical Design of
Experiments (SDE). Research is ongoing to improve the traditional SDE methodology.
ZAC03-0004
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