SN8F5708 datasheet(37/204 Pages) SONIX

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SN8F5708 Series

Reset and Power-on Controller

Datasheet Rev. 2.4

Reset and Power-on Controller

The reset and power-on controller has five reset sources: low voltage detectors (LVDs), watchdog,

programmable external reset pin, and software reset. The first three sources would trigger an

additional power-on sequence. Subsequently, the microcontroller initializes all registers and starts

program execution with its reset vector (ROM address 0x0000).

7.1 Configuration of Reset and Power-on Controller

SONiX publishes an OPTIONS_SN8F5708.A51 file in SN-Link Driver for Keil C51.exe (downloadable

on cooperative website: www.sonix.com.tw). This options file contains appropriate parameters of

reset sources and CPU clock source selection, and is strongly recommended to add to Keil project.

SN8F5000 Debug Tool Manual provides the further detail of this configuration. The option items

are as following:



Program Memory Security



CPU Clock Source



Noise Filter



Reset Source : VDD Voltage (Low Voltage Detection)



Reset Source : External Reset / GPIO Shared Pin



Reset Source : Watchdog Reset & Overflow Period

The code option is the system hardware configurations including oscillator type, noise filter option,

watchdog timer operation, LVD option, reset pin option and flash ROM security control. The code

SN8F5708 Datasheet(PDF) 37 Page - SONiX Technology Company