GENERAL DESCRIPTION

EM57P300 is a tiny-controlled-based voice/dual tone melody/dual tone sound effect Ics which contain all the function of EM57000 series and has an OTP (One Time Programmable) ROM inside.

FEATURES

• EM57P300 – ROM : 64k x 10 bits (21 sec@6K sample rate).

• Working Voltage 2.4V ~ 5.1V.

• One 4-bit input port, two 4-bit I/O ports, and 32x4 bits RAM.

• 8k (maximum) program ROM.

• One 6-bit timer overflow control.

• ASPCM synthesizer and dual tone melody/sound effect generator.

• 4k~32k Hz playing speed for voice play-back.

• Multiple tempos for dual tone melody/sound effect play-back.

• Variable beats for dual tone melody/sound effect play-back.

• Multiple levels of volume control.

• Fixed current D/A output to drive external connected transistor for voice output.