Integrated circuits may have programmable logic circuitry and hard-coded circuitry. The hard-coded circuitry may include data circuitry, a processor, and memory. As the hard-coded circuitry has a limited capacity, a portion of the programmable logic circuitry may be configured using configuration data to serve as expanded soft-coded memory for the hard-coded processor. Instructions for controlling settings of the data circuitry may be stored on the hard-coded and soft-coded memory. An additional portion of the programmable logic circuitry may be configured using the configuration data to serve as a soft-coded processor that executes the instructions stored on the soft-coded memory. Use of the soft-coded processor and/or expanded soft-coded memory may allow for more advanced algorithms for initialization and calibration of the data circuitry than when only hard-coded memory is used and may allow for updated processor circuitry to be implemented.