Part Number:TMS320F28335Other Parts Discussed in Thread:TMS320F28377S, TMS320F28379S
关于dsp芯片选型的问题,现在我用的是TMS320F28335PGFA芯片,现在由于代码比较大,flash和ram都不够用了,想选一款芯片,不用修改代码,和原来芯片兼容的一款dsp芯片,大家有推荐的吗?
On the issue of the DSP chip selection, now I am using TMS320F28335PGFA chips, now because the code is bigger, flash and ram are not enough, want to choose a new chip, need not modify the code, and the original chips compatible with a DSP chip, you have recommend?
Daniel:
您好
https://www.ti.com.cn/zh-cn/microcontrollers-mcus-processors/c2000-real-time-control-mcus/products.html#62=150%3B300&887=C28x&945=12%3B16&1219=68%3B516&1227=768%3B1024%3B1536&~2192=External%20memory%20interface%3BFPU32&
根据您的描述筛选出以上IC,指令应该不用做太大更改,但是寄存器的地址等地址需要做针对性的对应。请您根据官方对应的datasheet和TRM做对应修改满足您的需求。
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?? ?:
这几款是不是TMS320F28377S更合适一些?有朋友也给我推荐了TMS320F28379S,这款您的推荐列表里面没有,TMS320F28379S是否也可以呢?您能否帮我选一个最优解呢?
Are these TMS320F28377S more suitable? A friend also recommended TMS320F28379S to me. This one is not in your recommendation list. Is TMS320F28379S also acceptable? Could you help me choose an optimal solution?
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Daniel:
您好
https://www.ti.com.cn/compare-products/zh-cn/?id=5014&type=GPT&partList=TMS320F28335,TMS320F28377S,TMS320F28379S&columnList=887,62,1227,1219,945,3164,2192,2130,1228,3268,568,1130,3316,2954,2955,-4
根据如图显示TMS320F28377S相比于TMS320F28379S更合适一点。具体需要您根据您的项目需求来确定。
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那我直接把TMS320F28377S贴到原来的板子上,应该是pin to pin吧,不用我去修改硬件了?
Then I will directly paste TMS320F28377S to the original board, it should be pin to pin, I don't need to modify the hardware?
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Daniel:
您好
不建议您直接PIN TO PIN替代,因为根据参数和功能看TMS320F28377S更优有更多的管脚选择,请您根据您实际项目需求来做针对性的更改来匹配。
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TMS320F28377S我选择引脚176脚,和28335保持一致,封装选择HLQFP和28335的LQFP保持一致,这样也不能吗?是外围电路需要重新设计吗?
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Daniel:
您好
不一定能直接替代。不单单要管脚数量一样,您还要保证管脚定义一样,以及您电路给与相关管脚的上拉等设计满足新的IC要求。关于是否要重新设计的问题,需要根据您的项目实际情况针对性得做相关匹配的更改。