MB95110B(2008) Ver la hoja de datos (PDF) - Fujitsu
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MB95110B Datasheet PDF : 68 Pages
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MB95110B Series
■ PIN CONNECTION
• Treatment of Unused Input Pin
Leaving unused input pins unconnected can cause abnormal operation or latch-up, leaving to permanent
damage. Unused input pins should always be pulled up or down through resistance of at least 2 kΩ.
Any unused input/output pins may be set to output mode and left open, or set to input mode and treated the
same as unused input pins. If there is unused output pin, make it to open.
• Treatment of Power Supply Pins on A/D Converter
Connect to be AVCC = VCC and AVSS = VSS even if the A/D converter is not in use.
Noise riding on the AVCC pin may cause accuracy degradation. So, connect approx. 0.1 μF ceramic capacitor
as a bypass capacitor between AVCC and AVSS pins in the vicinity of this device.
• Power Supply Pins
In products with multiple VCC or VSS pins, the pins of the same potential are internally connected in the device
to avoid abnormal operations including latch-up. However, you must connect the pins to external power supply
and a ground line to lower the electro-magnetic emission level, to prevent abnormal operation of strobe signals
caused by the rise in the ground level, and to conform to the total output current rating.
Moreover, connect the current supply source with the VCC and VSS pins of this device at the low impedance.
It is also advisable to connect a ceramic capacitor of approximately 0.1 μF as a bypass capacitor between VCC
and VSS pins near this device.
• Mode Pin (MOD)
Connect the MOD pin directly to VCC or VSS pins.
To prevent the device unintentionally entering test mode due to noise, lay out the printed circuit board so as to
minimize the distance from the MOD pin to VCC or VSS pins and to provide a low-impedance connection.
• Analog Power Supply
Always set the same potential to AVCC and VCC . When VCC > AVCC, the current may flow through the AN00 to
AN07 pins.
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