HT82A821R - 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 operating at the 48kHz sampling rate. The HT82A821R has a digital.

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 v1.0
· Operating voltage: fSYS= 6MHz/12MHz: 4.0V~5.5V
· Low voltage reset function (3.0V±0.3V)
· High-performance 48kHz sampling rate for audio consumption
· 8 bidirectional I/O lines (max.)
· Two 16-bit programmable timer/event counter and playback
· Embedded class AB power amplifier for speaker overflow interrupts
· W.