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BU8254KVT Datasheet, PDF (14/20 Pages) Rohm – 35bit LVDS Transmitter 35:5 Serializer | |||
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âAbout the Power On Reset
Power On Reset is not mandatory for this device.
ï¼The PD pin should be set to high level when Power On Reset procedure is not used.ï¼
VDD
XRST
BU8254KVT
Figureâ10 Terminal connection when Power On Reset
is not used
However, Power On Reset procedure is strongly recommend for internal logic initialization by following
two methods.
â The method of using CR circuit.
â¡ The method of using external specific IC.
It is recommend to do enough examination for target application.
V DD
schottky barrier diode
V DD
10KΩ
VDD
XRST
V T+
Be careful of temperature of
the capacitor especially over
and again.
B characteristic ceramics and
polymer aluminum
are recommended.
220Ω
2.2μF
XRST
Internal Reset
td
td is approximately equal to 20ms when the left RC coleus are applied.
Figureâ11 Power On Reset by external a CR circuit
V DD
VDD
power on IC
(open drain
output)
VOUT
GND
V DD
220KΩ
XRST
0.1μF
B Characteristic
ceramics.
VDD
XRST
Internal Reset
Detection voltage
V T+
td
Figureâ12 Power On Reset by specific IC
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