GENERAL DESCRIPTION
Besides playing the built-in voice data, this device can output voice data that is input from outside the device. And the sound volume is adjustable as well. It is easy to configure a speech synthesizer by externally connecting a power amplifier and a CPU to the ML2250 family. The ML2250 family line-up includes 2 types of products: with on-chip mask ROM, and with on-chip flash memory. ML2251/52/53/54/56-XXX This is a CMOS single chip speech synthesis device with an on-chip mask ROM. Products with 5 types of mask ROMs are available in the ML2250 family depending upon the total playback time length. ML22Q54/Q58 The ML22Q54/Q58 is a speech synthesis device with a 4-Mbit flash memory built in. The voice data can be easily written to the flash memory using a special tool. The on-chip flash memory product is suitable for the diversified low volume production or short delivery time applications that the on-chip mask ROM product cannot support. The ML22Q54/Q58 is most suitable for evaluation because the circuit configuration is the same as the on-chip mask ROM product.
