1）DSP通常没有flash memory，DSP需要预装软件。而MCU内置一个非断电可擦写的program memory，自带有eeprom功能。
2) DSP的整数运算操作要快的多。而MCU则必须通过软件的方式来实现，而非通过硬件来处理数**算 。
3) DSP在计算浮点运算时要快成百上千倍。而在MCU中也是通过软件来实现。
4) DSP是基于快速运算的输入输出设备。而MCU是一个具有扩展功能的多接口设备，但是它运算能力有限。
“鲁棒性”意味着他们需要一个设计更加良好的主板让其正确工作。而MCU甚至可以工作在一个测试板上。
1) DSP often don't have a flash programm memory, they need the software to be 'loaded' into them. Microcontrollers do have a non power off eraseble program memory inside, with and some have eeprom store capabilites.
2) DSP are much faster for integer maths operations. many microcontrollers even dont have them in hardware this has to be achieved in software (multiplication and division)
3) DSP are hundreds of times faster for floating point operations. In microcontrollers this has to be done in software.
4) DSP are oriented to be an input/output device with 'fast calculating machine'. Microcontrollers are a multifeature device with several ways of interfacing the world but they are not the fastest in none of them.
5) DSP are not designed to be a 'robust' device. By 'not robust' I mean that they require a more well designed board to let the work correctly. Microcontrollers can work on a Test Board! |
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