HT82A821R Datasheet (Holtek Semiconductor)

HT82A821R, Basic USB Speaker OTP MCU

This HT82A821R is an 8-bit high performance RISC-like microcontroller designed for USB Speaker product applications.

The HT82A821R combines a 16-bit DAC, USB transceiver, SIE (Serial Interface Engine), audio class processing unit, FIFO, 8-bit MCU into a single chip.

The DAC in the HT82A821R is opera

HT82A821R Features

* USB 2.0 full speed compatible

* USB spec v1.1 full speed operation and USB audio

* Total FIFO size are 400 byte (8, 8, 384 for EP0~EP2)

* 2048´15 program memory ROM

* 192´8 MCU type data memory RAM (Bank0)

* HALT function and wake-up feature reduce power device class spec