Power Stepper Controller with Stall Detection and Auto Addressing (LIN/PWM Interface) | E523.30 (*SoC)

This system-in-a-chip IC controls bipolar stepper actuators with current-choppered micro-stepping. The IC is controlled by a LIN2.x interface. It's LIN-address can calculated by the “auto-addressing” feature (called “SNPD” in official LIN-specification). Alternatively the IC can be controlled by a PWM-interface, with diagnosis feedback. The integrated sensor-less “stall-detection” detects mechanical end-positions and stops the motor to re-duce acoustical noise during initialization runs. The calculating heart is an 8-bit controller which is assisted by powerful circuitry. For absolute precise positioning, up to 3 Hall-sensors or potentiometers can read out. The IC can also drive up to 3 DC motors or other loads. ICs with FLASH-memory are programmable via JTAG interface or LIN in normal or high speed mode. The IC is available with standard firmware as well as with a development system for individual firmware.