
MB90950 Series
50
DS07-13752-2E
(Continued)
*5:
Applicable to pins: P00 to P07, P10 to P17, P20 to P27, P30 to P37, P40 to P47,
P50 to P55, P60 to P67, P70 to P77, P80 to P87, P90 to P97, PA0 to PA1
Use within recommended operating conditions.
Use with DC voltage (current)
The +B signal should always be applied by using 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 the rated value, 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 operate the power-on reset.
Care must be taken not to leave the +B input pin open.
Sample recommended circuits:
*6 : If used exceeding TA =
+ 105 °C, please consult with us due to the restricted reliability.
It is ensured to write/erase data to the Flash memory between TA =
40 °C and + 105 °C.
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.
P-ch
N-ch
VCC
R
Input/output equivalent circuits
+B input (0 V to 16 V)
Limiting
resistance
Protective diode