- GENERAL DESCRIPTION
UST2019 IC is a powerful 4-bit micro-controller based sound processor. They are embedded EPROM architecture, and the OTP (One Time Programmable) IC. There are 4 channels that are configured as speechor midi, and all of them can be autoplayed back simultaneously. By using the high fidelity ADPCM speechsynthesis algorithm, it can produce outstanding quality voices. Wide range sampling rate up to 44.1kHz and different volume level are supported. It is also equipped two kinds of audio outputs with fine resolution,including a current D/A converter and a PWM direct-driver.The RISC MCU architecture is very easy to to program and control, various applications can be easily implemented.There are 48 instructions, and most of them are executed in single cycle.Furthermore,in addition to the HALT mode (sleep mode), it offers the SLOW mode to minimize power dissipation.
- FEATURES
- Wide operating voltage range: 2.0V to 5.5V.
Ø 4-bit RISC type micro-controller with 48 instructions.
Ø 224x4-bit RAM maximum, divided into 4 pages.
Ø 1MHz or 2MHz instruction frequency.
Ø SLOW mode to operate at low power consumption. (Not suggest using in Timer/Clock application.)
Ø HALT mode to save power, less than 1uA@3V standby current.
Ø Precisely embedded oscillator with build-in resistor (+/- 1%). External resistor to adjust system frequency is optional.
Ø Low voltage reset (LVR=1.8V), watch-dog reset and I/O port reset are all supported to protect the system.
Ø One interrupt entrance with an independent stack, multiple interrupt sources.
Ø Maximum 24 flexible I/Os maximum with optional function: input, output, large current output, IO, floating type reset, pull-high reset, IR carrier output and large current IR carrier output. For the output port, users can select the normal Drive current output or large Sink current output to directly drive high brightness LED.
Ø Support Open-Drain (OD) bi-direction IO.
Ø Infrared output: optional IR carrier frequency and optional data high/low IR output supported.
Ø Maximum of 4 channels can play simultaneously; each channel can be arbitrarily assigned as speech or
Midi channel based on the product spec.
Ø New high fidelity ADPCM speech synthesis algorithm
- 3 kinds of 256 points, ADSR and Full-Wave instrument waveform provide outstanding midi quality for MIDI.
Ø 256 steps envelope control for MIDI.
Ø High quality 9-bit PWM to directly drive speaker, or 10-bit D/A converter audio output to amplify the volume by external audio amplifier for multi-channel MIDI especially.
Ø Support large PWM current output.
Ø 16 steps volume control for audio output.
Ø Quick-IO control supported.
Ø A unique fast writing mode is provided to speed up OTP writing time.
ØA special ICP (In Circuit Programming) writing function is supported for user to fabricate PCBA in advance.
Ø Programmable code protection is provided. Ø Various shipping type for different application requirement.
- BLOCK DIAGRAM
- PACKAGE PIN ASSIGNMENT
