LC88FC2D0B Datasheet, PDF (39/47 Pages) ON Semiconductor – 16-bit Microcontroller 256K-byte Flash ROM / 24Kbyte RAM / 100-pin

LC88FC2D0B
■ Power-on Reset (POR) Characteristics at Ta=–40 to +85C, VSS1=VSS2=VSS3=VSS4=0V
Parameter
Symbol Pin/Remarks
Conditions
Por release
voltage
PORRL
Detction voltage POUKS
unknown state
 _{Select from option.}
(Note 8-1)
 _{See Fig10.}
(Note 8-2)
Specification
Option selected
voltage
min
typ
max unit
2.57V
2.47 2.57 2.72
2.87V
2.77 2.87 3.02
V
0.7
0.95
Power supply
rise time
PORIS
 _{Power supply rise time}
from 0V to 1.6V.
100
ms
Note8-1: The POR release level can be selected out of 2 levels only when the LVD reset function is disabled.
Note8-2: POR is in an unknown state before transistors start operation.
■ Low Voltage Detection Reset (LVD) Characteristics at Ta=–40 to +85C,
VSS1=VSS2=VSS3=VSS4=0V
Specification
Parameter
Symbol Pin/Remarks
Conditions
Option selected
voltage
min
typ
max unit
LVD reset
LVDET
 _{Select from option.}
voltage
(Note 9-2)
(Note 9-2)
 _{See Fig. 11.}
2.81V
2.71 2.81 2.96
V
LVD hysteresis LVHYS
width
2.81V
60
mV
Detection
LVUKS
 _{See Fig. 11.}
voltage unknown
(Note 9-3)
0.7
0.95
V
state
Low voltage
TLVDW
 _LVDET-0.5V
detection
 _{See Fig. 12.}
minimum width
0.2
mS
(Replay
sensitivity)
Note9-1: LVD reset voltage specification values do not include hysteresis voltage.
Note9-2: LVD reset voltage may exceed its specification values when port output state changes and/or when a
large current flows through port.
Note9-3: LVD is in an unknown state before transistors start operation.
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