Hello, Can anyone tell me STM controllers which support all the required capabilities as ADSP-CM408F Analog Devices? Thanks

[RLavi]

..

[Tesla DeLorean]

None of them

[MikeDB]

What are your actual 'required capabilities' ? I assume if you needed all of them, you would use the ADI chip

[RLavi]

Floating point operations

16 bit ADC *2 

UART support RS-485

Ethernet support 

2 DAC 12 Bit 

Cache Memory - 128 -348K byte 

Flash Memory – 2 * 10^6 * 8 bits

Clock Speed is 240 MHz 

Low, high pass filtering available

Watchdog 

SPI and I2C Communication Possible.

DMA 

MPU 

These all I need

[MikeDB]

Some of the high end processors can do most of that, but the ADC will always be the gotcha. ADI's ones are simply better.

Load up the MCU finder and enter what you really need

https://www.st.com/en/development-tools/st-mcu-finder.html

[RLavi]

I do not want to compromise on ADCs and Yes they have limited the support on DSPs.

[MikeDB]

I'd go for an F7 part with the bits you need and an SPI A-D convertor chip then

[RLavi]

Thank you for the advice. will look into it

[MikeDB]

Start on the Mouser, RS or whoever your preferred distributor is and you should find something that is simple to connect for about $2. The advantage of being off-chip is you'll actually get better resolution and a lower noise floor as well.