Initial Release
Made correction to message after halt in 図3.2「Shutdown Method」
Added 「RTC (Real-Time Clock)」
Made correction to configurable volume range in 「Changing Volume」
Added note about function change of pins 3/4 on CON14 to 「GPIO」
Added precaution note when using board revision Rev.C1 to 「Note On Bootloader Versions」
Made correction to RS232C level conversion adaptor connection method in 「Layout Diagram」