Hello,
I am doing some IQ math experiences with F28032 to see the mathematical performance compared to Panasonic MCU(MN103SFK0K) and the performance result was not good as I expected. Both F28032 and MN103S have the same CPU frequency(60MHz). Below are the test condition
F28032 MN103S
1. _IQcos() => about 1us 166nS
2. _IQsin() => about 1us 166nS
3. _Sqrt() => about 1us 188nS
I found that MN103 supports mathematical instructions which take a couple of machine cycle and IQ math which takes at least 40~44 cycle for sin and cos functions. Below is brief table for the performance
F28032 MN103S
1. _IQcos() => 44 execution cycle 5 machine cycles
2. _IQsin() => 46 execution cycle 5 machine cycles
3. _Sqrt() => 63 execution cycle 3~10 machine cycles
Are there any way to improve the performance of mathematical functions for F28032? I need to use a lot of sin, cos, sqrt functions for solar application and get mathematical functions done within 30us.
Thank you.
