MB91F577CSPMC datasheet(120/163 Pages) CYPRESS

120 / 163 page

Document Number: 002-04725 Rev.*A

Page 120 of 163

MB91570 Series

13.4.4

Power-on Conditions

(TA: Recommended operating conditions, VSS = 0.0V)

Parameter

Symbol

Pin name

Conditions

Value

Unit

Remarks

Min

Typ

Max

Level detection voltage

–

VCC5

–

2.1

2.3

2.5

When turning on power

for microcontroller

Level detection hysteresis

width

–

VCC5

–

125

During voltage drop

Level detection time

–

Slope detection undetected

standard

–

VCC5

VCC5 = at level detection

release level time

–

mV/µs

Power off time

tOFF

VCC5

–

*1: If the fluctuation of the power supply is faster than the low voltage detection time, there is the possibility to generate or release

after the power supply voltage has exceeded the detection voltage range.

*2: When setting the power supply fluctuation to this standard or less, it is possible to suppress the slope detection. This is the

standard when the power supply fluctuation is stable.

*3: This time is to start the slope detection at next power on after power down and internal charge loss

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