MB89P627 datasheet(34/61 Pages) FUJITSU

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MB89620R Series

4. AC Characteristics

(1) Reset Timing

(VCC = +5.0 V

±10%, AVSS = VSS = 0.0 V, TA = –40

°C to +85°C)

Note: tXCYL is the oscillation cycle (1/FC) to input to the X0 pin.

(2) Power-on Reset

(AVSS = VSS = 0.0 V, TA = –40

°C to +85°C)

Note: Make sure that power supply rises within the selected oscillation stabilization time.

If power supply voltage needs to be varied in the course of operation, a smooth voltage rise is

recommended.

Parameter

Symbol

Condition

Value

Unit

Remarks

Min.

Max.

RST “L” pulse width

tZLZH

—16 tXCYL

—ns

Parameter

Symbol

Condition

Value

Unit

Remarks

Min.

Max.

Power supply rising time

—

Power-on reset function only

Power supply cut-off time

tOFF

—

Due to repeated operations

0.2 VCC

RST

tZLZH

0.2 V

2.0 V

VCC

0.2 V

tOFF

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