Boost LED Drivers are often used to drive LEDs in series. If an LED fails while open,overvoltage protection (OVP) is necessary to avoid the damage to a boost integrated circuit (IC) or output capacitor. This application report presents the solutions to increase the TPS61043 LED Driver OVP threshold.
The TRS232E is a dual Driver/receiver that includes a capacitive voltage generator to supply TIA/RS-232-Fvoltage levels from a single 5-V supply. Each receiver converts TIA/RS-232-F inputs to 5-V TTL/CMOS levels.This receiver has a typical threshold of 1.3 V, a typical hysteresis of 0.5 V, and can accept ±30-V inputs. EachDriver converts TTL/CMOS input levels into TIA/RS-232-F levels. The Driver, receiver, and voltage-generatorfunctions are available as cells in the Texas Instruments LinASIC™ library.
This application note shows how to write an Inter Integrated Circuit bus Driver (I²C) for the Philips P90CL301micro-controller.It is not only an example of writing a Driver, but it also includes a set of application interface software routines toquickly implement a complete I²C multi-master system application.For specific applications the user will have to make minimal changes in the Driver program. Using the Drivermeans linking modules to your application software and including a header-file into the application sourceprograms. A small example program of how to use the Driver is listed.The Driver supports i.a. polled or interrupt driven message handling, slave message transfers and multi-mastersystem applications. Furthermore, it is made suitable for use in conjunction with real time operating systems, likepSOS+.
This application note demonstrates how to write an Inter Integrated Circuit bus Driver (I2C) for the XA-S3 16-bitMicrocontroller from Philips Semiconductors.Not only the Driver software is given. This note also contains a set of (example) interface routines and a smalldemo application program. All together it offers the user a quick start in writing a complete I2C system applicationwith the PXAS3x.The Driver routines support interrupt driven single master transfers. Furthermore, the routines are suitable foruse in conjunction with real time operating systems.
