MICONDUCTOR Datasheet, PDF (26/37 Pages) Fujitsu Component Limited. – 8-bit Proprietary Microcontrollers

MB89590B/BW Series
4. AC Characteristics
(1) Reset Timing
Parameter
RST “L” pulse width
Symbol Condition
tZLZH

(VCC = 5.0 V, VSS = 0 V, TA = −40 °C to +85 °C)
Value
Min.
Max.
Unit
Remarks
16 tHCLY

ns
Note : tHCYL is the internal main clock oscillating cycle (1/2 Fc) .
RST
0.2 VCC
tZLZH
0.2 VCC
(2) Power-on Reset
Parameter
Power supply rising time
Power supply cutoff time
Symbol Condition
tR

tOFF

(VSS = 0 V, TA = −40 °C to +85 °C)
Value
Min.
Max.
Unit
Remarks
0.066
50
ms
4

ns
Due to repeated
operations
Note : The power supply must be up within the selected oscillation stabilization time. When the supply voltage
needs to be varied while operating, it is recommended to smoothly start up the voltage.
tR
3.5 V
VCC
0.2 V
tOFF
0.2 V
0.2 V
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