I need help with MCU Selection. The main aim is to replace (STM8s and HX711) Chips in a weight scale project. So, it should be low in cost, the SD24 PGA Gain should be 128. Note: Load cell maximum weight could be greater than 200kg.
If you want to use the Synergy family, there are S1JA MCU which have the SD24 module, but the max PGA is just 32: https://www.renesas.com/eu/en/products/microcontrollers-microprocessors/renesas…
If you want to use the Synergy family, there are S1JA MCU which have the SD24 module, but the max PGA is just 32: https://www.renesas.com/eu/en/products/microcontrollers-microprocessors/renesas-synergy-platform-mcus/s1ja-48-mhz-arm-cortex-m23-cpu?partno=R7FS1JA782A01CBT%23AC0#modalBuyDirect
I actually didn't find any Renesas MCU with the PGA gain of 128. They are either 32 or 64.
If you don't mind to consider another families, you can look at these ones:
There are also other MCUs but they are more expensive, so I didn't include them in this list.
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