资 源 简 介
The ML2250 family is a 2-channel mixing speech synthesis device with an on-chip voice data (i.e., phrases)storing mask ROM and a flash memory. Besides playing the built-in voice data, this device can output voice datathat is input from outside the device. This ML2250 family allows selecTIng the playback method from the 8-bitPCM, non-linear 8-bit PCM, 16-bit PCM, 2-bit ADPCM2, and 4-bit ADPCM2 algorithms. And the sound volumeis adjustable as well.The ML2250 family incorporates a 14-bit D/A converter and low-pass filter.It is easy to configure a speech synthesizer by externally connecTIng a power amplifier and a CPU to the ML2250family.
The ML2250 family line-up includes 2 types of products: with on-chip mask ROM, and with on-chip flashmemory.ML2251/52/53/54/56-XXXThis is a CMOS single chip speech synthesis device with an on-chip mask ROM. Products with 5 types of maskROMs are available in the ML2250 family depending upon the total playback TIme length.ML22Q54/Q58The ML22Q54/Q58 is a speech synthesis device with a 4-Mbit/8-Mbit flash memory built in. The voice data canbe easily written to the flash memory using a special tool. The on-chip flash memory product is suitable for thediversified low volume producTIon or short delivery time applications that the on-chip mask ROM productcannot support. The ML22Q54/Q58 is most suitable for evaluation because the circuit configuration is the sameas the on-chip mask ROM product.
