EM55000 Series:

EM55000 series is a series of 3 to 340 seconds single chip high quality voice synthesizer IC which contains one 4-bit Input port (provided for EM55100 and above), three 4-bit I/O ports and a tiny controller. By programming through the tiny controller, user's application includes section combination, trigger mode, control outputs, keyboard matrix and other logic function can be easily implemented.

EM55M/Q450:

EM55M450/EM55Q450 series are tiny-controller-based voice synthesizer IC which contain all the functions of EM55000 series and are equipped with MTP/QTP ROM inside.

Features

• EM55000 Series:

  • Single power supply.

  • Crystal/Ring oscillator option.

  • 3-340 seconds voice capacity.

  • Power down mode for saving power consumption.

  • Reset pin available.

  • Single ROM for voice program. Maximum 32 K program addressing size available.

  • Readable ROM data.

  • One 6 bit timer overflow control is provided.

  • Two stack for subroutine call.

  • 5 bits ASPCM synthesis.

  • 38K Hz modulation for IR transmission.

  • 15 steps volume control.

  • Direct Drive/traditional DAC.

  • 8 bits resolution D/A.

  • Green VoiceTM.

  EM55M/Q450:

  • Single power supply 2.4V~5.1V. Suitable for 3 batteries application.

  • Port1 and Port2 provide wake-up function. Port3.2 ofers programmable IR (38kHz carry)
    communication function.

  • Power down mode for saving power consumption.

  • Single ROM for voice and program data.

  • Readable ROM code data.

  • One 6-bit timer overflow control.

  • Two stacks for subroutine calling.

  • 5-bit ASPCM /7-bit PCM voice synthesizer.

  • Multiple playing speed (1kHz ~22kHz) voice playback.

  • Multiple-level volume control.

  • Fixed current D/A output: to drive externally connected transistor for speaker.
    Direct drive output: directly drive speaker without component.

  • Available package types:
    COB type: EM55M450 COB.
    Dice type: EM55M450 H, EM55Q450 H.
    QFP type: EM55M450 AQ.