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The SC5808M are single-chip voice synthesizing 32 bit CMOS IC. They are embedded EPROM architecture, and OTP (One Time Programmable) Speech chip, Each body has 4 I/O pins and 4M EPROM. Through accurate internal oscillation, external Rosc is unnecessary. There is PWM output for voice. This any external component is not required.Maximum 1024 voice groups. serial mode maximum 1024 voice groups ,mobile One Group contain several steps(voice section ); Maximum 1536 steps and 16 steps volume control for all the Groups. Maximum 48Khz Play Rate,Maximum 1000 seconds Voice.Each Step can be define Trigger Mode, Output Status, Voice Section, Mute length, I/O Type & Simple Programming Function. Support to mode trigger IC (Stand Alone, Serial Trigger Mode ). Easy use development system is for function selection and voice combination . PC download the ROM code by the OTP_Writer.