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HD64F2149YV 数据表(PDF) 768 Page - Renesas Technology Corp

部件名 HD64F2149YV
功能描述  Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series
PDF  1075 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

HD64F2149YV 数据表(HTML) 768 Page - Renesas Technology Corp

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Section 23 Clock Pulse Generator
Rev. 3.00 Jan 18, 2006 page 740 of 1044
REJ09B0280-0300
23.3.2
External Clock Input
Circuit Configuration: An external clock signal can be input as shown in the examples in figure
23.5. If the XTAL pin is left open, make sure that stray capacitance is no more than 10 pF.
In example (b), make sure that the external clock is held high in standby mode, subactive mode,
subsleep mode, and watch mode.
EXTAL
XTAL
External clock input
Open
(a) XTAL pin left open
EXTAL
XTAL
External clock input
(b) Complementary clock input at XTAL pin
Figure 23.5 External Clock Input (Examples)



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