Datasheet
Table Of Contents
- Figure 1. EVAL6460 demonstration board
- 1 The L6460 main features
- 2 EVAL6460 board description
- 3 The EVAL6460 controlled by the EVAL_IBU-STR7
- Figure 5. EVAL_IBU-STR7 board
- Figure 6. EVAL_IBU-STR7 schematic board
- 3.1 Board connection and configuration
- 3.2 Starting flexSPIN evaluation software
- Figure 13. FlexSPIN evaluation software - start window
- 3.2.1 How to turn-on the VswDrv regulator
- 3.2.2 How to enable the DC1 and DC2 output bridges
- 3.2.3 How to enable the DC3 and DC4 output bridges
- 3.2.4 How to assign and read a GPIO
- 3.2.5 How to read and clear an undervoltage event
- 3.2.6 How to manage the interrupt controller
- 3.2.7 How to put the device into "low power" condition and awaken it
- 3.2.8 How to generate a PWM
- 3.2.9 How to close the low voltage power switch
- 3.2.10 How to measure an input voltage using A-D converter
- 3.2.11 How to use the digital comparator
- 3.2.12 How to configure and program the device via the SPI sequencer
- 3.2.13 How to read the device temperature
- 3.2.14 How to work in master - slave configuration
- 4 Revision history
The EVAL6460 controlled by the EVAL_IBU-STR7 AN3097
26/34 Doc ID 16599 Rev 2
Figure 28. Interrupt controller diagram
Here you can choose the events that can cause an interrupt signal.
3.2.7 How to put the device into "low power" condition and awaken it
When in normal operating mode, the microcontroller can place the L6460 in "low power
mode". In this condition the L6460 sets all bridge outputs in high impedance, powers down
all regulators (including system regulators and charge pump) and disables almost all its
circuits, including the internal clock, reducing power consumption as much as possible.
In the first software window click the L6460 device and then the "Supervisory and Reset
Manager" button, the window in Figure 27 appears.
Push the "Set Low Power mode" button in the middle of the window, the L6460 enters into
low power mode status (refer to datasheet section - low power mode).
To awaken the device push the "Awake neg. pulse" button in the bottom right-hand side, the
L6460 then exits from low power mode.
3.2.8 How to generate a PWM
The L6460 includes three general purpose PWM generators that can be redirected on GPIO
pins. Aux_PWM_1 and Aux_PWM_2 work with a fixed period F
OSC
/2 and have a
programmable duty cycle; Aux_PWM_3 has a programmable base time and a
programmable time for both high and low levels.
In the first software window click the L6460 device, in the block diagram it is possible to set
the PWM characteristics by pushing the relative button.
If you want to extend the PWM on the GPIO pin you have to also set the GPIO configuration.
For example to set the Aux_PWM_1 on GPIO11 configure the GPIO as in Figure 29, click
the Aux_PWM_1 button and move the slider to obtain the desired duty cycle. You can
measure the PWM generated on the GPIO11 pin of the J11 connector.