Keil™, An ARM® Company

µVision® User's Guide

Setting Tool Options

Target Options ButtonµVision3 lets you set options for your target hardware. The dialog Options for Target opens via the toolbar icon or via the Project — Options for Target menu item. In the Target tab you specify all relevant parameters of your target hardware and the on-chip components of the device you have selected. The following dialog shows the settings for our example.

The following table describes the options of the Target dialog:

Dialog ItemDescription
Xtalspecifies the external clock frequency of your device. Several microcontrollers use an on-chip PLL to generate the CPU clock. In this cases the value is not identical with the XTAL frequency. Check your hardware design carefully to determine the correct value.
Operating Systemallows you to select a Real-Time Operating System for your project.
Use On-chip
ROM / RAM
defines the address spaces for the on-chip memory components for the linker/locater. Note that on some devices you need to reflect this configuration in the Startup Code.