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EM78P372KSS20 Datasheet(PDF) 83 Page - ELAN Microelectronics Corp

Part # EM78P372KSS20
Description  8-BIT Microcontroller
PDF  118 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P372KSS20 Datasheet(HTML) 83 Page - ELAN Microelectronics Corp

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EM78P372K
8-bit Microcontroller
Product Specification (V1.4) 05.11.2016
 75
(This specification is subject to change without prior notice)
7.11.2
Crystal Oscillator/Ceramic Resonators (Crystal)
The EM78P372K can be driven by an external clock signal through the OSCI pin as
illustrated below.
OSCI
OSCO
Figure 7-30 External Clock Input Circuit
In most applications, Pin OSCI and Pin OSCO can be connected with a crystal or
ceramic resonator to generate oscillation. Figure 6-18 below depicts such a circuit.
The same applies to the XT mode, HXT1 mode, HTX2 mode, LXT1 mode and LXT2
mode.
OSCI
OSCO
Crystal
RS
C2
C1
Figure 7-31 Crystal/Resonator Circuit
The following table provides the recommended values for C1 and C2. Since each
resonator has its own attribute, user should refer to the resonator specifications for the
appropriate values of C1 and C2. RS, a serial resistor, maybe required for AT strip cut
crystal or low frequency mode. Figure 6-21 is PCB layout suggestion. When the
system works in Crystal mode (16 MHz), a 10 K
 is connected between OSCI and
OSCO.



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