描述 Description

The SNC749 is a simply chip base on new DSP technology. SNC749 provide simply andeasy control functions for system manufactory. SNC749 also is a high performance voiceIC. That is built-in 64K word high speed ROM, and by different model to built-in 64Kword, 448K words low speed ROM, the maximum program size is full ROM size includehigh-speed and low-speed ROM. The SNC749 have three timer, one real time clock andone watchdog timer and built-in a hi-performance software synthesizer to provide lotof voice effects, such as hi-decompression engine to support from 1.5Kbps ~ 32Kbpscompression rate for speech and music, multi-channel voice synthesizer to provide12-channel wave table melody.

特性 Features

? Power supply:? - 2.4V ~ 3.6V (for 2 batteries application)? - 3.6V ~ 5.1V (for 3 batteries application)
? Built-in a new 16-bit DSP core with 16 MIPS CPU performance
? Software-based voice/melody processing
? System Clock 16MHz crystal or R-C type oscillator
? 24 I/O pins (P0.0~P0.15, P1.0~P1.7)
? RAM size: 4K*16 bits
? ROM size: 512KW
? Maximum program size: Full ROM Size
? 3 Timer, 1 RTC, 1 WDT
? 9 Interrupt Sources
? Two voice channels / 12 melody channels
? Three 8-bit timer with auto-reload function
? Low Voltage Detect
? Sampling Rate: 8KHz ~16KHz