MB90F337 datasheet(28/48 Pages) FUJITSU

28 / 48 page

MB90335 Series

DS07-13735-6E

(Continued)

*4 :

• Applicable to pins: P00 to P07, P10 to P17, P20 to P27, P40 to P47, P50 to P54

• 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 operate 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 P60 to P67, DVP, DVM, HVP, HVM, UTEST, HCON

• Sample recommended circuits:

*5 : A peak value of an applicable one pin is specified as a maximum output current.

*6 : The average output current specifies the mean value of the current flowing in the relevant single pin during a

period of 100 ms.

*7 : The average total output current specifies the mean value of the currents flowing in all of the relevant pins

during a period of 100 ms.

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

• Input/output equivalent circuits

+B input (0 V to 16 V)

Limiting

resistance

Protective diode

MB90F337 Scheda tecnica(PDF) 28 Page - fujitsu semiconductor