Description :
MS311 is a professional voice MCU and support SPI interface for Recording, Preload message, melody and more. it also integrates many peripherals, such low noise gainstage, 16 bits ADC / DAC, AGC, programmable IO, 1Watt Class D Amplifier, battery detetor and more. It could easy pass EMI qualify and low BOM and software programming easy.
Specification :
■ Operating Voltage: 2.5V ~ 5V
■ 4k Bytes Program ROM.
■ 768 Bytes RAM (Shared with Internal Use)
■ Oscillator:ERC 10MHz @ 2.5V, 16M @3.6V
■ 8bit RISC CPU , 4 Levels Stack
■ I/O port:
■ 6 I/O ports & 1 input port
■ Programmable internal pull high or Open Drain
■ Input pin with external wake up
■ Watchdog Timer
■ SPI interface for SPI Flash
■ Build in Microphone gain OP-AMP and internal
■ Build in Low noise OP-AMP
■ Recorded Segment mixed with Preload Voice / Melody
■ AGC (Auto Gain Control)
■ Timer 2 x 16 bits
■ LVD (Low Voltage Detect) / LVR (Low Voltage Reset)
■ APOR (Auto Power ON Reset), can be disable by Software.
■ Recording Length from 8s to 64mins (8kHz)
■ Sampling Rate from 4K~16K
■ 16bit high Quality Audio ADC input
■ 16Bit DAC output
■ Voice processing format:ADPCM
■ Long Distance Recording
■ 2 Channel Melody Generator
■ 3 play modes :
■ Recorded Segments / Preload Voice / Melody
■ Recorded Segment mixed with Preload Voice / Melody
■ Sound detect, auto recording and auto playback.
■ Preload Voices & Melody Stored on SPI Flash
■ 1Watt Class D Amplifier, direct drive 8~32Ω speaker
■ Digital Output Volume Control by software
■ Support speaker as microphone input and sound output.
■ Support Pre-load speech / melody
■ in circuit programming by external SPI Flash programmer.
■ Voice Change Effects : Childish, Girl, Elder.