LC87F2J32A Datasheet, PDF (20/30 Pages) Sanyo Semicon Device – 8-bit 1-chip Microcontroller

LC87F2J32A
Low voltage detection reset (LVD) Characteristics at Ta = -40 to +85°C, VSS1=VSS2=VSS3=0V
Parameter
LVD reset
Voltage
(Note 8-2)
Symbol
Pin/Remarks
Conditions
LVDET
• Select from option.
(Note 8-1)
(Note 8-3)
• See Fig. 9.
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 hysteresis
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. 9.
(Note 8-4)
0.7
0.95 V
Low voltage
TLVDW
• LVDET-0.5V
detection
minimum width
• See Fig. 10.
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.
No.A1384-20/30