MB91F587LD datasheet(118/177 Pages) SPANSION

118 / 177 page

D at aS h ee t

August 22, 2014, MB91F587LA_DS705-00012-2v0-E

115

CONFIDENTIAL

*9: • Corresponding pins: General-purpose ports

•

Use the devices within recommended operating conditions.

•

Use the devices with direct voltage (current).

•

The + B signal should always be applied by connecting a limiting resistor between the + B signal and the

microcontroller.

•

The value of the limiting resistor should be set so that the current input to the microcontroller pin does not

exceed rated values at any time regardless of instantaneously or constantly when the + B signal is input.

•

Note that when the microcontroller drive current is low, such as in the low-power consumption modes, the

+ B input potential can increase the potential at the VCC pin via a protective diode, possibly affecting other

devices.

•

Note that if the + B signal is input when the microcontroller is off (not fixed at 0 V), since the power is

supplied through the pin, the microcontroller may operate incompletely.

•

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.

Sample recommended circuit

MB91580L series

+B input (12 to 16V)

Protective diode

Limiting resistor current

*10: To use this product at TA=125°C, equip this on a multilayer board with four or more layers.

To equip this on a single-layer board, change the operating conditions (operating frequency, power supply

voltage, etc) to use this at the power consumption PD=500mW or lower, or use this at TA=110°C or lower.

*11: When it is used exceeding TA=125°C, contact your sales representative.

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.

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