code: def erase_sector(self, address):
          
          assert self._active_operation == self.Operation.ERASE
  
          # update core register to execute the erase_sector subroutine
          result = self._call_function_and_wait(self.flash_algo['pc_erase_sector'], address)
  
          # check the return code
          if result != 0:
              raise FlashEraseFailure('erase_sector(0x%x) error: %i' % (address, result), address, result)
docs: !
          @brief Erase one sector.
          
          @exception FlashEraseFailure