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MB90378 Datasheet(PDF) 37 Page - Fujitsu Component Limited.

Part No. MB90378
Description  16-bit Proprietary Microcontroller
Download  65 Pages
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Maker  FUJITSU [Fujitsu Component Limited.]
Homepage  http://edevice.fujitsu.com/fmd/en/index.html
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MB90378 Datasheet(HTML) 37 Page - Fujitsu Component Limited.

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MB90378 Series
37
(Continued)
*1 : This parameter is based on VSS
= AVSS = 0.0 V.
*2 : Set AVCC and VCC at the same voltage. Take care so that AVR does not exceed VCC
+ 0.3 V when the power is
turned on.
*3 : VI and VO shall never exceed VCC
+ 0.3 V.
*4 : The maximum output current is a peak value for a corresponding pin.
*5 :
• Use within recommended operating conditions.
• Use at DC voltage (current).
• The +B signal should always be applied a limiting resistance placed between the +B signal and the
microcontroller.
• The value of the limiting resistance should be set so that when the +B signal is applied the input current to
the microcontroller pin does not exceed rated values, either instantaneously or for prolonged periods.
• Note that when the microcontroller drive current is low, such as in the power saving modes, the +B input
potential may pass through the protective diode and increase the potential at the Vcc pin, and this may affect
other devices.
• Note that if a +B signal is input when the microcontroller power supply is off (not fixed at 0 V), the power
supply is provided from the pins, so that incomplete operation may result.
• Note that if the +B input is applied during power-on, the power supply is provided from the pins and the
resulting supply voltage may not be sufficient to poerate the power-on reset.
• Care must be taken not to leave the +B input pin open.
• Note that analog system input/output pins other than the A/D input pins (LCD drive pins, etc.) cannot accept
+B signal input.
• Sample recommended circuits :
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.
Pch
Nch
VCC
R
• Input/output equivalent circuits
Protective diode
Limiting
resistance
+B input (0 V to 16 V)


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