Texas Instruments TSC2007EVM manual EVM Overview, Features, Introduction, Analog Interface

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EVM Overview

1 EVM Overview

1.1Features

∙Full-featured evaluation board for the TSC2007 4-wire resistive touch screen controller (TSC).

∙Modular design for use with a variety of DSP and microcontroller interface boards.

The TSC2007EVM-PDK is a complete evaluation kit, which includes a USB-based motherboard and evaluation software for use with a personal computer running Microsoft Windows™ operating systems.

1.2Introduction

The TSC2007EVM is in the Texas Instruments modular EVM form factor, which allows direct evaluation of the performance and operating characteristics of the TSC2007, and eases software development and system prototyping. This EVM is compatible with the 5-6K Interface Evaluation Module (SLAU104) from Texas Instruments and additional third-party boards such as the NI Speedy-33™ from National Instruments Corporation. (www.ni.com)

The TSC2007EVM-PDK is a complete evaluation/demonstration kit, which includes a USB-based motherboard called the USB-MODEVM interface board and evaluation software for use with a personal computer running Microsoft Windows operating systems.

2Analog Interface

For maximum flexibility, the TSC2007EVM is designed for easy interfacing to multiple analog sources. Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin, dual-row header/socket combination at J1. This header/socket provides access to the analog input pins of the TSC. Consult Samtec at www.samtec.com, or call 1-800-SAMTEC-9 for a variety of mating connector options.

		Table 2. Analog Interface Pinout
PIN NUMBER	SIGNAL	DESCRIPTION
J1.2	X+	Touch screen X+ electrode
J1.4	X-	Touch screen X- electrode
J1.6	Y+	Touch screen Y+ electrode
J1.8	Y-	Touch screen Y- electrode
J1.10	Unused
J1.12	AUX	Auxiliary input, 0 V to VREF
J1.14	Unused
J1.16	Unused
J1.18	Unused
J1.20	Unused
J1.15	Unused
J1.1-J1.19 (odd)	AGND	Analog ground connections (except J1.15)

NI Speedy-33 is a trademark of Hyperception, Inc.

I2C is a trademark of Koninklijke Philips Electronics N.V., The Netherlands.

Windows is a trademark of Microsoft Corporation.

SPI is a trademark of Motorola, Inc.

2 TSC2007EVM and TSC2007EVM-PDK User's Guide SLAU199 –March 2007

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