LC872G08A_10 Datasheet, PDF (17/27 Pages) Sanyo Semicon Device – 8K/6K/4K-byte ROM and 256-byte RAM integrated 8-bit 1-chip Microcontroller

LC872G08A/06A/04A
Power-on Reset (POR) Characteristics at Ta = -40°C to +85°C, VSS1 = 0V
Parameter
POR release
voltage
Symbol
PORRL
Pin/Remarks
Conditions
• Select from option.
(Note 7-1)
Option selected
voltage
1.67V
1.97V
Specification
min
typ
max
unit
1.55
1.67
1.79
1.85
1.97
2.09
2.07V
1.95
2.07
2.19
2.37V
2.25
2.37
2.49
2.57V
2.87V
2.45
2.57
2.69
V
2.75
2.87
2.99
3.86V
3.73
3.86
3.99
4.35V
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 1.6V.
100
ms
Note7-1: The POR release level can be selected out of 8 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°C to +85°C, VSS1=0V
Parameter
Symbol
LVD reset voltage
(Note 8-2)
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.
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