This part is a kind of semiconductor called HT46R46-H.

Function of this product has Cost-Effective A/D Type 8-Bit OTP MCU.

Manufacturers : Holtek Semiconductor

Image and pinout :

Some of the text within the PDF file :

HT46R46-H Cost-Effective A/D Type 8-Bit OTP MCU Technical Document · Tools Information · FAQs · Application Note - HA0003E Communicating between the HT48 & HT46 Series MCUs and the HT93LC46 EEPROM - HA0009E HT48 & HT46 MCU I/O Port Application - Rolling LED Light Display - HA0049E Read and Write Control of the HT1380 - HA0052E Microcontroller Application - Battery Charger - HA0083E Li Battery Charger Demo Board - Using the HT46R46 Features · Operating voltage: · Up to 0.5ms instruction cycle with 8MHz system clock fSYS=4MHz: VLVR~5.5V with LVR enabled fSYS=8MHz: 3.3V~5.5V with LVR disabled · 13 bidirectional I/O lines (max.) · 1 interrupt input shared with an I/O line · 8-bit programmable timer/event counter with overflow at VDD=5V · 4-level subroutine nest [ ... ]

HT46R46-H PDF Datasheet Download