The MSM98P05 is a PCM-based voice synthesis IC with built-in 2-Mbit OTP (One Time PROM). This IC employs Oki nonlinear PCM algorithm and straight PCM algorithm for playback and contains a current mode 10-bit D/A converter and a low-pass filter. External control can be made easily by the built-in edit ROM that can form sentences by linking phrases. With Oki Voice Analyzing/Editing Tool, the built-in edit ROM can be set up and also the built-in ROM data can be created and evaluated easily. With the stand-alone mode/microcontroller interface mode switching pin, the MSM98P05 can support various applications. The products with build-in OTP are suited to applications to be produced in small quantities in a wide variety or in short delivery time. Demand like these, that is, production in small quantities in a wide variety and delivery with an early deadline is what the MSM9800 family of products with built-in mask ROM cannot meet.