
MB90091A
3. Power-on Reset Specifications
(1) Power ON-OFF timing
Parameter
Symbol
Pin
Power-supply rise time
tr
VCC, AVCC
Power-supply shut-off time
toff
Values
Min.
Max.
0.05
50
1
—
(Ta = 0°C to +70°C)
Unit
Remarks
ms
Power-on reset circuit
activating conditions
Conditions in which the
ms circuit repeatedly
operate normally
V CC
0.2 V
4.75 V
tr
0.2 V
t off
Note: The power supply must be activated smoothly
0.2 V
17