參數(shù)資料
型號: S1C60N08F0A0100
元件分類: 微控制器/微處理器
英文描述: MICROCONTROLLER, PQFP100
封裝: PLASTIC, QFP-100
文件頁數(shù): 33/145頁
文件大小: 1118K
代理商: S1C60N08F0A0100
II-10
EPSON
S1C60R08 TECHNICAL HARDWARE
CHAPTER 3: SUMMARY OF NOTES
<Reset Circuit>
q The power-on reset signal which is input to the RESET terminal changes depending on conditions
(power rise time, components used, board pattern, etc.).
Decide the time constant of the capacitor and resistor after enough tests have been completed with the
application product.
When the built-in pull-down resistor is added to the RESET terminal by mask option, take into
consideration dispersion of the resistance for setting the constant.
q In order to prevent any occurrences of unnecessary resetting caused by noise during operating,
components such as capacitors and resistors should be connected to the RESET terminal in the
shortest line.
<Power Supply Circuit>
q Sudden power supply variation due to noise may cause malfunction. Consider the following points to
prevent this:
(1) The power supply should be connected to the VDD and VSS terminal with patterns as short and
large as possible.
(2) When connecting between the VDD and VSS terminals with a bypass capacitor, the terminals
should be connected as short as possible.
VDD
VSS
Bypass capacitor connection example
VDD
VSS
(3) Components which are connected to the VS1, VL1, VL2, VL3 terminals, such as a capacitor, should
be connected in the shortest line.
<Arrangement of Signal Lines>
q In order to prevent generation of electromagnetic
induction noise caused by mutual inductance, do not
arrange a large current signal line near the circuits that
are sensitive to noise such as the oscillation unit.
q When a signal line is parallel with a high-speed line in
long distance or intersects a high-speed line, noise may
generated by mutual interference between the signals
and it may cause a malfunction.
Do not arrange a high-speed signal line especially near
circuits that are sensitive to noise such as the oscillation
unit.
OSC2
OSC1
VDD
Large current signal line
High-speed signal line
Prohibited pattern
<Precautions for Visible Radiation (when bare chip is mounted)>
q Visible radiation causes semiconductor devices to change the electrical characteristics. It may cause
this IC to malfunction. When developing products which use this IC, consider the following precau-
tions to prevent malfunctions caused by visible radiations.
(1) Design the product and implement the IC on the board so that it is shielded from visible radiation
in actual use.
(2) The inspection process of the product needs an environment that shields the IC from visible
radiation.
(3) As well as the face of the IC, shield the back and side too.
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