Datasheet

TSC2101
SLAS392D− JUNE 2003 − REVISED MAY 2005
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The ADC is controlled by an ADC control register. Several modes of operation are possible, depending upon
the bits set in the control register. Channel selection, scan operation, averaging, resolution, and conversion rate
may all be programmed through this register. These modes are outlined in the sections below for each type of
analog input. The results of conversions made are stored in the appropriate result register.
VREF
IN+
IN−
REFP
REFM
CONVERTER
AVSS1
AUX2
AUX1
VBAT
Y−
Y+
X−
X+
PINTDAV AVDD1 VREF
Figure 27. Simplified Diagram of the Analog Input Section
Data Format
The TSC2101 output data is in unsigned Binary format and can be read from registers over the SPI interface.
Reference
The TSC2101 has an internal voltage reference that can be set to 1.25 V or 2.5 V, through the reference control
register.