MB91F525FHDPMC datasheet(147/280 Pages) CYPRESS

147 / 280 page

Document Number: 002-04662 Rev. *F

Page 147 of 280

MB91520 Series

(3) Power-on Conditions

(3-1) [MB9152xxxB/MB9152xxxC/MB9152xxxD]

(TA: -40 °C to +125 °C, VSS = 0.0 V)

Parameter

Symbol

Name

Conditions

Value

Unit

Remarks

Min

Typ

Max

Level detection

voltage

–

VCC

–

2.024

2.2

2.376

Level detection

hysteresis width

–

VCC

–

100

–

Level detection time

–

µs

Power off time

tOFF

VCC

–

Power ramp rate

dV/dt

VCC

VCC:

0.2 V to 2.376 V

–

mV/µs *3

C pin voltage at

Power-on

–

*1: This spec is at 4 mV/µs of power ramp rate. If the power ramp rate is faster than 4mV/µs, there is the possibility to

generate or release after the power supply voltage has exceeded the detection voltage range.

*2: Vcc must be held below 0.2 V for a minimum period of tOFF.

*3: Power-on can detect by satisfying power ramp rate when power off time is not satisfied.

*4: C-pin voltage is below 60 mV when VCC is turned on again.

Note:

When using MB91F52xxxB/C, either *2 or *3 or *4 must be satisfied. When neither *2 nor *3 nor *4 can be

satisfied, use MB91F52xxxD and assert external reset (RSTX) at power-up and at any brownout event.

 Power off time, Power ramp rate, C pin voltage at Power-on

VCC

tOFF

0.2V

dV/dt

C pin

=60mV

≤60mV

MB91F525FHDPMC 数据表(PDF) 147 Page - Cypress Semiconductor

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