This part is a kind of semiconductor called HT48R064B.

Function of this product has (HT48R063B - HT48R066B) Enhanced I/O Type 8-Bit OTP MCU.

Manufacturers : Holtek Semiconductor

Image and pinout :

Some of the text within the PDF file :

www.DataSheet.co.kr Enhanced I/O Type 8-Bit OTP MCU HT48R063B/HT48R064B HT48R065B/HT48R066B Revision: 1.00 Date: April 7, 2011 Datasheet pdf - http://www.net/ www.DataSheet.co.kr Contents Table of Contents General Description 1 Features ...1 CPU Features 1 Peripheral Features 1 Technical Document ...1 Selection Table [ ... ]

HT48R064B PDF Datasheet Download