HT82A821R Overview
This HT82A821R is an 8-bit high performance RISC-like microcontroller designed for USB Speaker product applications. The HT82A821R bines 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.
HT82A821R Key Features
- USB 2.0 full speed patible
- 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
- Operating voltage: fSYS= 6MHz/12MHz: 4.0V~5.5V
- Low voltage reset function (3.0V±0.3V)
- High-performance 48kHz sampling rate for audio
- 8 bidirectional I/O lines (max.)