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AN2317 Datasheet(PDF) 25 Page - STMicroelectronics

Part # AN2317
Description  Energy Metering IC External Circuits
PDF  27 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2317 Datasheet(HTML) 25 Page - STMicroelectronics

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AN2317 - Application
External Circuit Design
25/27
●
External Clock (see
Figure 15)
The clock generator is powered from analog supply, and is responsible for two tasks:
a)
to retard the turning on of some of the function blocks after Power-on Reset (POR)
in order to help smooth start the external power supply circuitry and keep all major
loads off of the circuit, and
b)
to provide all necessary clocks for the analog and digital parts. Two nominal
frequency ranges are expected,(1) from 4.000MHz to 4.194MHz, or (2) from
8.000MHz to 8.192MHz.
Figure 15.
External Clock Source Recommended Connections
VSS
–
CLKIN CLKOUT
AI12917



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