SN8P2613 datasheet(41/102 Pages) SONIX

41 / 102 page

SN8P2610 Series

8-Bit Micro-Controller

SONiX TECHNOLOGY CO., LTD

Page 41

Version 1.3

LVD reset:

VDD

VSS

System Normal Run

System Stop

LVD Detect Voltage

Power On

Delay Time

Power

System Status

Power is below LVD Detect

Voltage and System Reset.

The LVD (low voltage detector) is built-in Sonix 8-bit MCU to be brown out reset protection. When the VDD drops and

is below LVD detect voltage, the LVD would be triggered, and the system is reset. The LVD detect level is different by

each MCU. The LVD voltage level is a point of voltage and not easy to cover all dead-band range. Using LVD to

improve brown out reset is depend on application requirement and environment. If the power variation is very deep,

violent and trigger the LVD, the LVD can be the protection. If the power variation can touch the LVD detect level and

make system work error, the LVD can’t be the protection and need to other reset methods. More detail LVD information

is in the electrical characteristic section.

The LVD is three levels design (2.0V/2.4V/3.6V) and controlled by LVD code option. The 2.0V LVD is always enable for

power on reset and Brown Out reset. The 2.4V LVD includes LVD reset function and flag function to indicate VDD

status function. The 3.6V includes flag function to indicate VDD status. LVD flag function can be an easy low battery

detector

. LVD24, LVD36 flags indicate VDD voltage level. For low battery detect application, only checking LVD24,

LVD36 status to be battery status. This is a cheap and easy solution.

086H

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

PFLAG

NT0

NPD

LVD36

LVD24

Read/Write

R/W

After reset

Bit 5

LVD36:

LVD 3.6V operating flag and only support LVD code option is LVD_H.

0 = Inactive (VDD > 3.6V).

1 = Active (VDD <= 3.6V).

Bit 4

LVD24:

LVD 2.4V operating flag and only support LVD code option is LVD_M.

0 = Inactive (VDD > 2.4V).

1 = Active (VDD <= 2.4V).

SN8P2613 Datasheet(PDF) 41 Page - SONiX Technology Company

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