The EM55000 series is a single-chip high-quality voice synthesizer IC with a duration of 3 to 340 seconds. It 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.
The EMS55000 series is a tiny‑controller‑based speech synthesizer IC offering 3 to 340 seconds of voice capacity. It includes a 4‑bit input port, three 4‑bit I/O ports, and programmable functions such as section combination, trigger mode, and keyboard matrix.
The document lists pin functions, absolute maximum ratings, detailed electrical characteristics, recommended application circuits for various key counts, and a pad diagram for PCB layout. Certification information for the Green Voice™ technology is also included.
| Operating Voltage (typical) | 3.0 V |
|---|---|
| Standby Current (max) | 2.0 µA |
| Operating Current (range) | 250 µA to 350 µA |
| Output Current VO (max) | 6.4 mA |
| Oscillation Frequency (typical) | 1.2 MHz |
The series can store up to 340 seconds of voice data.
Both ring‑type and crystal‑type oscillators are supported as options.