Holtek Semiconductor HT82A851R
The HT82A851R is an 8-bit high performance RISC-like microcontroller designed for wireless USB Phone product applications. The HT82A851R combines a SPI, USB transceiver, SIE (Serial Interface Engine), audio class processing unit, FIFO and an 8-bit MCU into a single chip. The play frequency in the HT82A851R operates at a sampling rate of 48/8kHz.| Part No. | HT82A851R |
|---|---|
| Datasheet | HT82A851R Download |
| Manufacturer |  Holtek Semiconductor |
| Description | USB Audio MCU |
| Buy | Stock & Price |
FEATURES
● Operating voltage: fSYS = 6M/12MHz: 3.3V~5.5V● 16 bidirectional I/O lines (max.)
● Two 16-bit programmable timer/event counters and
● Two hardware implemented Isochronous transfers
● Total FIFO size: 464 bytes (8, 8, 384, 32, 32 for EP0~EP4)
● Programmable frequency divider (PFD)
● Integrated SPI hardware circuit
● Play/Record Interrupt
● HALT and wake-up features reduce power overflow interrupts
● 4096´15 program memory ROM
● 384´8 data memory RAM (Bank0,1)
● USB 2.0 full speed compatible
● USB spec V1.1 full speed operation and USB audio consumption
● Watchdog Timer
● 16-level subroutine nesting
● Bit manipulation instruction
● 15-bit table read instruction
● 63 powerful instructions
● All instructions executed within one or two machine device class spec V1.0
● Built-in digital PGA (Programmable Gain Amplifier)
● 48kHz/8kHz sampling rate for audio playback controlled by software option
● 8kHz audio recording sampling rate
● Supports audio playback digital volume control
●...
