EVAL-IBU-STR7 STMicroelectronics

AN3097 Application note EVAL6460 demonstration board based on the L6460 SPI configurable stepper and DC multi motor driver Introduction The L6460 is optimized to control and drive multi-motor systems, providing a unique level of integration in terms of control, power, and auxiliary features. Thanks to its high configurability the L6460 can be customized to drive different motor architectures and to optimize the number of embedded features, such as the voltage regulators, the high precision A-D converter, the operational amplifier and the voltage comparators. The possibility of simultaneously driving the stepper and DC motors makes the L6460 the ideal solution for all applications featuring multi motors. The L6460 can communicate with an external microprocessor by using an integrated slave SPI (serial protocol interface) through this interface the majority of the L6460s functions can be controlled. Master device interfacing with multiple SPI slave devices has an nSS signal to address each slave device. Figure 1. EVAL6460 demonstration board May 2010 Doc ID 16599 Rev 2 1/34 www.st.comContents AN3097 Contents 1 The L6460 main features . 4 2 EVAL6460 board description 6 3 The EVAL6460 controlled by the EVAL IBU-STR7 11 3.1 Board connection and configuration . 13 3.1.1 Jumper configuration . 13 3.1.2 Loads and board supply connection . 15 3.1.3 The EVAL6460, EVAL IBU-STR7 and PC interface . 15 3.2 Starting flexSPIN evaluation software . 15 3.2.1 How to turn-on the VswDrv regulator . 16 3.2.2 How to enable the DC1 and DC2 output bridges 18 3.2.3 How to enable the DC3 and DC4 output bridges 19 3.2.4 How to assign and read a GPIO 23 3.2.5 How to read and clear an undervoltage event 25 3.2.6 How to manage the interrupt controller . 25 3.2.7 How to put the device intolow powe condition and awaken it 26 3.2.8 How to generate a PWM 26 3.2.9 How to close the low voltage power switch 27 3.2.10 How to measure an input voltage using A-D converter . 28 3.2.11 How to use the digital comparator . 29 3.2.12 How to configure and program the device via the SPI sequencer . 29 3.2.13 How to read the device temperature . 31 3.2.14 How to work in master - slave configuration . 32 4 Revision history . 33 2/34 Doc ID 16599 Rev 2