===Option Bytes===
Option bytes are set to 0xE7F7
[[File:OptionBytes.png{|noneclass="wikitable"|thumb|ST7 +Original Firmware Option Byte Info]]Details!Option Description!Original Setting|-|Watchdog Reset on Halt|Reset generation when entering HALT mode|-|Hardware of Software Watchdog|Software (watchdog to be enabled by software)|-|Low Voltage Detection Selection|Highest Voltage Threshold|-|FLASH read-out protection|Read-out protection disabled|-|Package slection|(A)R - TQFP64|-|RESET clock cycle selection|Reset phase with 256 CPU cycles|-|Oscillator Type|External Source|-|Oscillator Range|HS 8~16MHz|-|PLL activation|PLL x2 disabled|}
===GPIO Initialization===