LC87F0808AUQFPTLM-H Datasheet, PDF (18/25 Pages) ON Semiconductor – 8-bit 1-chip Microcontroller

LC87F0808A
Low Voltage Detection Reset (LVD) Characteristics at Ta = -40°C to +85°C, VSS1=VSS2=0V
Parameter
LVD reset voltage
(Note 8-2)
Symbol
LVDET
Pin/Remarks
Conditions
• Select from option.
(Note 8-1)
(Note 8-3)
• See Fig. 8.
Option selected
voltage
1.91V
2.01V
2.31V
2.51V
min
1.81
1.91
2.21
2.41
Specification
typ
max
unit
1.91
2.01
2.01
2.11
2.31
2.41
2.51
2.61
V
2.81V
2.71
2.81
2.91
3.79V
3.69
3.79
3.89
4.28V
4.18
4.28
4.38
LVD hysteresys
width
LVHYS
1.91V
55
2.01V
55
2.31V
55
2.51V
55
mV
2.81V
60
3.79V
65
4.28V
65
Detection voltage
unknown state
LVUKS
• See Fig. 8.
(Note 8-4)
0.7
0.95
V
Low voltage
TLVDW
• LVDET-0.5V
detection
minimum width
• See Fig. 9.
0.2
ms
(Reply sensitivity)
Note8-1: The LVD reset level can be selected out of 7 levels only when the LVD reset function is enabled.
Note8-2: LVD reset voltage specification values do not include hysteresis voltage.
Note8-3: LVD reset voltage may exceed its specification values when port output state changes and/or when a large
current flows through port.
Note8-4: LVD is in an unknown state before transistors start operation.
Comparator, Operational Amplifiers Characteristics at Ta=-40 to +85°C, VSS1=VSS2=0V
Function
Parameter
Symbol
CMP1, 2
Input common-
mode voltage
(Note9-1)
VCMIN
Pin/Remarks
CMP1IA, CMP1IB
CMP2IA, CMP2IB
Conditions
Specification
VDD[V] min
typ
max
unit
3.3 to
5.5
VSS
VDD-
V
1.5V
Offset voltage
VOFF(1)
CMP1IA, CMP1IB
CMP2IA, CMP2IB
Input common-mode
voltage range
3.3 to
5.5
20 mV
CMP
tCRT
CMP1O
• Input common-mode
response
speed
CMP2O
voltage range
3.3 to
200
ns
• Input amplitude=100mV
5.5
• Over drive=50mV
AMP1, 2
AMP input
voltage
(Note9-1)
VAMIN
CMP1IA, CPM2IA
3.3 to
5.5
VSS
VDD-
V
1.5V
Input offset
voltage
VOPOFF
CMP1IA, CMP1IB
CMP2IA, CMP2IB
Input common-mode
voltage range
3.3 to
5.5
20 mV
Slew rate
SR
CMP1O
CMP2O
50pF
5.0
3
V/μs
Output
Source
IoSource
CMP1IA,CMP1IB(+)=1V
current
CMP2IA,CMP2IB(-)=0V
5.0
2.5 3.5
mA
CMP1O,CMP2O=VDD-1.5V
Sink
IoSink
CMP1IA,CMP1IB(+)=0V
CMP2IA,CMP2IB(-)=1V
5.0
0.3 0.35
mA
CMP1O,CMP2O=VDD+0.5V
Note9-1: When VDD=5V, input voltage is effective from 0 to 3.5V.
No.A1828-18/25