
MB91460D Series
85
other devices.
Note that if the +B signal is input when the microcontroller is off (not xed at 0 V), power is supplied through
the +B input pin; therefore, the microcontroller may partially operate.
Note that if the +B signal is input at power-on, since the power is supplied through the pin, the power-on reset
may not function in the power supply voltage.
Do not leave +B input pins open.
Example of recommended circuit :
*4 : Maximum output current is dened as the value of the peak current owing through any one of the corresponding
pins.
*5 : Average output current is dened as the value of the average current owing through any one of the
corresponding pins for a 100 ms period.
*6 : Total average output current is dened as the value of the average current owing through all of the
corresponding pins for a 100 ms period.
*7 : The maximum permitted power dissipation depends on the ambient temperature, the air ow velocity and the
thermal conductance of the package on the PCB.
The actual power dissipation depends on the customer application and can be calculated as follows:
PD = PIO + PINT
PIO =
Σ (VOL * IOL + VOH * IOH) (IO load power dissipation, sum is performed on all IO ports)
PINT = VDD5R * ICC + AVCC5 * IA + AVRH5 * IR (internal power dissipation)
*8 : Worst case value for the QFP package mounted on a 4-layer PCB at specied TA without air ow.
*9 : Please contact Fujitsu for reliability limitations when using under these conditions.
*10: Applicable only for devices with TA(max)
≥ TA.
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 circuit
+B input (0 V to 16 V)
Limiting
resistor
Protective diode