Z85C3010PSG Zilog, Z85C3010PSG Datasheet - Page 286
Z85C3010PSG
Manufacturer Part Number
Z85C3010PSG
Description
IC 10MHZ Z8500 CMOS SCC 40-DIP
Manufacturer
Zilog
Series
SCCr
Specifications of Z85C3010PSG
Processor Type
Z80
Features
Error Detection and Multiprotocol Support
Speed
10MHz
Voltage
5V
Mounting Type
Through Hole
Package / Case
40-DIP (0.620", 15.75mm)
Cpu Speed
8MHz
Digital Ic Case Style
DIP
No. Of Pins
40
Supply Voltage Range
5V
Operating Temperature Range
0°C To +70°C
Svhc
No SVHC (18-Jun-2010)
Base Number
85
Rohs Compliant
Yes
Clock Frequency
10MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
269-3934
Z85C3010PSG
Z85C3010PSG
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Price
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Part Number:
Z85C3010PSG
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Quantity:
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UM010901-0601
INTRODUCTION
This Application Note (App Note) is written for designers
using Zilog Integrated Circuits with on-chip oscillators;
circuits in which the amplifier portion of a feedback
oscillator is contained on the IC. This App Note covers
common theory of oscillators, and requirements of the
circuitry (both internal and external to the IC) which comes
from the theory for crystal and ceramic resonator based
circuits.
Purpose and Benefits
The purposes and benefits of this App Note include:
OSCILLATOR THEORY OF OPERATION
The circuit under discussion is called the Pierce Oscillator
(Figures 1, 2). The configuration used is in all Zilog on-chip
oscillators. Advantages of this circuit are low power
consumption, low cost, large output signal, low power level
in the crystal, stability with respect to V
and low impedances (not disturbed by stray effects). One
D
esign and build reliable, cost-effective, on-chip oscillator circuits that are trouble free.
PUTTING OSCILLATOR THEORY INTO A PRACTICAL DESIGN MAKES FOR A
MORE DEPENDABLE CHIP.
O
N
-C
CC
HIP
and temperature,
O
SCILLATOR
A
1. Providing designers with greater understanding of how
2. To eliminate field failures and other complications
Problem Background
Inadequate understanding of the theory and practice of
oscillator circuit design, especially concerning oscillator
startup, has resulted in an unreliable design and
subsequent field problems (See on page 10 for reference
materials and acknowledgments).
drawback is the need for high gain in the amplifier to
compensate for feedback path losses.
PPLICATION
oscillators work and how to design them to avoid
problems.
resulting from an unawareness of critical on-chip
oscillator design constraints and requirements.
Figure 1. Basic Circuit and Loop Gain
V i
D
N
ESIGN
OTE
A
B
V o
6-151
14
1
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