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HT82A850R -- Audio MCU
General Description
The HT82A850R is an 8-bit high performance
RISC-like microcontroller designed for USB Phone product
applications.
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 amplifier, whose gain ranges from -32dB to
+6dB. For the ADC input, the digital gain range is from 0dB to
19.5dB.
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Features
- Operating voltage: fSYS= 6MHz/12MHz:
3.3V~5.5V
- Low voltage reset function (3.0V±0.1V)
- Embedded high performance 16 bit PCM DAC
- Built-in digital Programmable Gain Amplifier - PGA
- High-performance 48kHz/8kHz sampling rate for audio
software playback
- 8kHz audio recording sampling rate
- Embedded class AB power amplifier for speaker
driving
- Audio playback digital volume control
- 4096x15 program memory
- 384x8 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
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