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TSC2005

更新时间： 2024-11-26 03:57:51
品牌 Logo 应用领域
BB 控制器
页数 文件大小 规格书
42页 797K
描述
1.6V to 3.6V, 12-Bit, Nanopower, 4-Wire TOUCH SCREEN CONTROLLER with SPI Interface

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TSC2005 数据手册

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SBAS379–DECEMBER 2006  
1.6V to 3.6V, 12-Bit, Nanopower, 4-Wire  
TOUCH SCREEN CONTROLLER with SPI™ Interface  
FEATURES  
APPLICATIONS  
•
•
•
•
•
•
Personal Digital Assistants  
Cellular Phones  
Portable Instruments  
Point-of-Sale Terminals  
MP3 Players, Pagers  
Multiscreen Touch Control  
•
•
•
•
•
•
•
4-Wire Touch Screen Interface  
Ratiometric Conversion  
Single 1.6V to 3.6V Supply  
Preprocessing to Reduce Bus Activity  
High-Speed SPI-Compatible Interface  
Internal Detection of Screen Touch  
Register-Based Programmable:  
DESCRIPTION  
–
–
–
10-Bit or 12-Bit Resolution  
Sampling Rates  
The TSC2005 is a very low-power touch screen  
controller designed to work with power-sensitive,  
handheld applications that are based on an  
advanced low-voltage processor. It works with a  
supply voltage as low as 1.6V, which can be  
supplied by a single-cell battery. It contains a  
complete, ultra-low power, 12-bit, analog-to-digital  
(A/D) resistive touch screen converter, including  
drivers and the control logic to measure touch  
pressure.  
System Timing  
•
•
•
•
On-Chip Temperature Measurement  
Touch Pressure Measurement  
Auto Power-Down Control  
Low Power:  
–
–
800µW at 1.8V, 50SSPS  
600µW at 1.6V, 50SSPS  
In addition to these standard features, the TSC2005  
offers preprocessing of the touch screen  
measurements to reduce bus loading, thus reducing  
the consumption of host processor resources that  
can then be redirected to more critical functions.  
•
Enhanced ESD Protection:  
–
–
–
–
±6kV HBM  
±1kV CDM  
Target ±18kV Air Gap Discharge  
Target ±15kV Contact Discharge  
The TSC2005 supports an SPI-compatible serial bus  
up to 25MHz. It offers programmable resolution of 10  
or 12 bits to accommodate different screen sizes and  
performance needs.  
•
2.5 x 3 WCSP-18 Package  
U.S. Patent NO. 6246394; other patents pending.  
The TSC2005 is available in a miniature 18-lead,  
5 x 6 array, 2.5 x 3 mm2 wafer chip-scale package  
(WCSP). The device is characterized for the –40°C  
to +85°C industrial temperature range.  
PENIRQ  
PINTDAV  
DAV  
VREF  
X+  
Touch  
X-  
CS  
Screen  
Drivers  
Y+  
SAR  
ADC  
SPI  
SCLK  
Interface  
Mux  
Y-  
Serial  
Interface  
SDI  
and  
TEMP  
Control  
RESET  
SDO  
AUX  
Internal  
Clock  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
SPI is a trademark of Motorola, Inc.  
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006, Texas Instruments Incorporated  
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