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TSC2008-Q1

更新时间： 2024-11-26 12:16:23
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
39页 881K
描述
1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire Micro TOUCH SCREEN CONTROLLER with SPI™

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TSC2008-Q1  
www.ti.com  
SBAS552 –JUNE 2011  
1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire  
Micro TOUCH SCREEN CONTROLLER with SPI™  
Check for Samples: TSC2008-Q1  
1
FEATURES  
234  
•
Qualified for Automotive Applications  
•
Low Power (12-Bit, 8.2kHz Eq Rate):  
•
4-Wire Touch Screen Interface  
Single 1.2V to 3.6V Supply/Reference  
Ratiometric Conversion  
–
–
–
30.4μA at 1.2V, fSCLK = 5MHz  
35.5μA at 1.8V, fSCLK = 10MHz  
44.6μA at 2.7V, fSCLK = 10MHz  
•
•
•
Effective Throughput Rate:  
•
•
Power-On, Software, and SureSet™ Resets  
Enhanced ESD Protection:  
–
Up to 20kHz (8-Bit) or 10kHz (12-Bit)  
•
•
•
Preprocessing to Reduce Bus Activity  
High-Speed SPI (up to 25MHz)  
Simple Command-Based User Interface:  
–
–
–
–
±8kV HBM  
±1kV CDM  
±25kV Air Gap Discharge  
±15kV Contact Discharge  
–
–
TSC2046 Compatible  
8- or 12-Bit Resolution  
•
•
Latch-Up Exceeds 100 mA per JESD78B -  
Class I  
4 x 4 QFN-16 Package  
•
•
•
•
•
On-Chip Temperature Measurement  
Touch Pressure Measurement  
Digital Buffered PENIRQ  
On-Chip, Programmable PENIRQ Pull-up  
Auto Power-Down Control  
U.S. Patent No. 6246394; other patents pending.  
APPLICATIONS  
•
Multi-Screen Touch Control Systems  
DESCRIPTION  
The TSC2008-Q1 is a very low-power touch screen controller designed to work with power-sensitive, handheld  
applications that are based on advanced low-voltage processors. It works with a supply voltage as low as 1.2V,  
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.  
In addition to these standard features, the TSC2008-Q1 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.  
The TSC2008-Q1 supports an SPI serial bus and data transmission. It offers programmable resolution of 8 or 12  
bits to accommodate different screen sizes and performance needs.  
The TSC2008-Q1 is available in a 16-pin,4 x 4 QFN package. The TSC2008-Q1 is characterized for the –40°C to  
+105°C industrial temperature range.  
VDD/REF  
PENIRQ  
X+  
Touch  
X-  
Y+  
Y-  
Screen  
Sensor  
Drivers  
SPI  
Serial  
Interface  
and  
Control  
SAR  
ADC  
CS  
Mux  
SCLK  
SDI  
TEMP  
AUX  
SDO  
Internal  
Clock  
GND  
Figure 1. Block Diagram  
1
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.  
SureSet is a trademark of Texas Instruments.  
SPI is a trademark of Motorola Inc.  
All other trademarks are the property of their respective owners.  
2
3
4
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 © 2011, Texas Instruments Incorporated  
 
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