Datasheet

Program Description
3-17
Operation
Figure 3−7. Configuration Screen
3.5.3.1 ADC Control Section
This section controls all of the parameters of the A/D converter. Each slider
controls one parameter, whose value is shown next to the slider. Each slider
is described as follows.
- Resolution—Selects between 8−, 10−, and 12−bit resolution.
- Conversion Clock—The internal clock which runs the A/D converter can
run at 8, 4, 2, or 1 MHz. When running at 8 MHz, only 8-bit resolution is
possible; when running at 4 MHz, 8- or 10-bit resolution is possible, but
12-bit is not. These restrictions are reflected in the operation of this
program, because only 1- or 2-MHz clock rates allow 12-bit resolution to
be chosen.
- Panel Voltage Stabilization Time—This is the time that the TSC2101
allows for the touch screen to settle after turning the drivers on.
- Precharge Time and Sense Time—These two parameters are the time
allowed to precharge the touch panel capacitance and then sense to see
if the screen is touched. For more details on these parameters, refer to the
TSC2101 data sheet.