HT82A850R Datasheet, PDF (1/41 Pages) Holtek Semiconductor Inc – Audio MCU

HT82A850R
Audio MCU
Features
· Operating voltage: f_SYS= 6MHz/12MHz: 3.3V~5.5V
· Low voltage reset function (3.0V±0.3V)
· Embedded high performance 16 bit PCM DAC
· Built-in digital Programmable Gain Amplifier - PGA
· High-performance 48kHz/8kHz sampling rate for au-
dio software playback
· 8kHz audio recording sampling rate
· Embedded class AB power amplifier for speaker
driving
· Audio playback digital volume control
· 4096´15 program memory
· 384´8 data memory RAM (Bank0,1)
· Programmable frequency divider - PFD
· Integrated SPI hardware circuit
· Play/record interrupt
· HALT function and wake-up feature reduce power
consumption
· 24 bidirectional I/O lines (max.)
· Two 16-bit programmable timer/event counter and
overflow interrupts
· 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
cycles
· 48-pin LQFP package
General Description
The HT82A850R is an 8-bit high performance RISC-like
microcontroller designed for USB Phone product appli-
cations. The HT82A850R integrates a 16-bit PCM ADC
and an 8-bit MCU into a single device. The DAC in the
HT82A850R operates at a sampling rate of 48/8kHz
and the 16-bit PCM ADC operates at a frequency of
8kHz for the Microphone input. The DAC in the
HT82A850R also has a digital programmable gain am-
plifier, whose gain ranges from -32dB to +6dB. For the
ADC input, the digital gain range is from 0dB to 19.5dB.
Rev. 1.10
1
July 25, 2007