LC87F7J32A Datasheet, PDF (20/29 Pages) Sanyo Semicon Device – FROM 32K byte, RAM 1024 byte on-chip 8-bit 1-chip Microcontroller

LC87F7J32A
Power-on reset (POR) Characteristics at Ta=-40 to +85°C, VSS1=VSS2=VSS3=0V
Parameter
POR release
voltage
Symbol
Pin/Remarks
Conditions
PORR
• Select from option.
(Note 7-1)
Option selected
voltage
2.07V
2.37V
min
1.95
2.25
Specification
typ
max
unit
2.07
2.19
2.37
2.49
2.87V
4.35V
2.75
2.87
2.99
V
4.21
4.35
4.49
Detection voltage
unknown state
POUKS
• See Fig. 7.
(Note 7-2)
0.7
0.95
Power supply rise
time
PORIS
• Power supply rise
time from 0V to 2.0V.
100 ms
Note7-1: The POR release level can be selected out of 4 levels only when the LVD reset function is disabled.
Note7-2: 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=0V
Parameter
LVD reset voltage
(Note 8-2)
LVD
hysteresys width
Symbol
Pin/Remarks
Conditions
LVDET
LVHYS
• Select from option.
(Note 8-1)
(Note 8-3)
• See Fig. 8.
Option selected
voltage
2.31V
2.81V
4.28V
2.31V
2.81V
min.
2.21
2.71
4.18
Specification
typ.
max.
unit
2.31
2.41
2.81
2.91
V
4.28
4.38
55
60
mV
4.28V
65
Detection voltage
unknown state
LVUKS
• See Fig. 8.
(Note 8-4)
0.7
0.95
V
Low voltage dtection TLVDW
• See Fig. 9.
minimum width
0.2
ms
(Reply sensitivity)
Note8-1: The LVD reset level can be selected out of 3 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.A0886-20/29