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R8C/15 bảng dữ liệu(PDF) 260 Page - Renesas Technology Corp

tên linh kiện R8C/15
Giải thích chi tiết về linh kiện  16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / R8C/Tiny SERIES
PDF  277 Pages
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

R8C/15 bảng dữ liệu(HTML) 260 Page - Renesas Technology Corp

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R8C/14 Group, R8C/15 Group
20. Precautions
Rev.2.10
Jan 19, 2006
Page 248 of 253
REJ09B0164-0210
20.9
Noise
20.9.1
Insert
a
bypass
capacitor
between
VCC
and
VSS
pins
as
the
countermeasures against noise and latch-up
Connect the bypass capacitor (at least 0.1
µF) using the shortest and thickest as possible.
20.9.2
Countermeasures against Noise Error of Port Control Registers
During severe noise testing, mainly power supply system noise, and introduction of external noise,
the data of port related registers may be changed.
As a firmware countermeasure, it is recommended to periodically reset the port registers, port
direction registers and pull-up control registers. However, examine fully before introducing the reset
routine as conflicts may be created between this reset routine and interrupt routines.



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