GENERAL DESCRIPTION
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, users application includes section combination, trigger mode, control outputs, keyboard matrix and other logic function can be easily implemented.

FEATURES
• 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.