Texas Instruments TSC4270, User Manual

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Power Supply
3 Power Supply
The power supplies to the TSC4270EVM kit are derived from the USB connected to your PC. On the
TSC4270EVM motherboard, the +5.0-V power from the USB is regulated by linear regulators U3, U4, and
U5. These regulators ge3.3 VDC to provide power supplies to the Stellaris microprocessors and
other circuitry on the TSC4270EVM motherboard, and also ge3.3 VDC and +1.8 VDC to provide
power-supplies to the TSC4270 on the TSC4270EVM daughterboard.
As shown in Table 3 , the +3.3 VDC and +1.8 VDC power supplies are provided to the TSC4270EVM
daughterboard through connector J2.
4 Installation
4.1 Hardware Description
The following items are provided in the hardware packet.
1. One TSC4270EVM daughterboard printed circuit board (PCB).
2. One TSC4270EVM motherboard PCB.
3. One TRULY Semiconductor, 20 × 12 channel capacitive touch screen, assembled on a fixture.
4. One USB connection cable.
5. TSC4270EVM-PDK evaluation software and related documentation (download from
ftp://ftp.ti.com/pub/evm-pdk/TSC4270/ ).
Items 1, 2, and 3 arrive preassembled, as shown in Figure 1 . Installing the EVM software, is described in
the following section.
4.2 Software Installation
The USB driver installation has to be carried out before running the GUI software.
1. 1. Based on the PC specifications, download the latest TSC4270EVM-PDK software package from
ftp://ftp.ti.com/pub/evm-pdk/TSC4270/ .
2. Extract the software package to the local hard drive.
3. Prerequisites before installation:
(a) .NET Framework v4.0 or higher ( ftp://ftp.ti.com/pub/evm-pdk/TSC4270/ ).
(b) Visual C++ redistributable 2010 or higher ( ftp://ftp.ti.com/pub/evm-pdk/TSC4270/ ).
7 SBAU208 – April 2013 TSC4270 Evaluation Module
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