The following article and document may help with the concept. Please check. You can use Op-Amps and ADC in PSoC 5LP device to realize the same.
For getting started with Op-Amps and ADC you can go through code examples present in PSoC Creator Code examples section (File--> Code example) as well as from the link below:
There is a custom component for using a load cell with HX711 24-bit Delta Sigma ADC
This is easy way to measure load cell.
PSoC5LP can measure the load cell, activate fillers (for packing or refilling applications), and perform display updates, all in a single chip, and can do more. This is the advantage of using PSoC5LP.