S80C188EB13 INNOVASIC [InnovASIC, Inc], S80C188EB13 Datasheet - Page 46
S80C188EB13
Manufacturer Part Number
S80C188EB13
Description
8-Bit/16-Bit Microcontrollers
Manufacturer
INNOVASIC [InnovASIC, Inc]
Datasheet
1.S80C188EB13.pdf
(85 pages)
- Current page: 46 of 85
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IA186EB/IA188EB
8-Bit/16-Bit Microcontrollers
4.1.2 Clock Generator
The IA186EB/IA188EB uses an on-chip clock generator to supply internal and external clocks.
The clock generator makes use of a crystal oscillator and includes a divide-by-two counter.
Figure 11 shows the various operating modes of the clock circuit. The clock circuit can use
either a parallel resonant fundamental mode crystal network (A) or a third-overtone mode crystal
network (B), or it can be driven by an external clock source (C).
The following parameters are recommended when choosing a crystal:
Temperature Range
– Application Specific
– ESR (Equivalent Series Resistance): 40 max
– C0 (Shunt Capacitance of Crystal): 7.0 pF max
– CL (Load Capacitance): 20 pF ± 2 pF
– Drive Level: 1 mW max
Figure 11. Clock Circuit Connection Options
UNCONTROLLED WHEN PRINTED OR COPIED
Page 46 of 85
IA211080314-13
http://www.Innovasic.com
Customer Support:
July 10, 2011
Data Sheet
1-888-824-4184
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