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TSC2008RGVT

更新时间： 2024-11-26 03:57:51
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
8页 279K
描述
1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire Micro TOUCH SCREEN CONTROLLER with SPI⑩

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®
TSC2008  
www.ti.com ...................................................................................................................................................................................................... SBAS406–JUNE 2008  
1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire  
Micro TOUCH SCREEN CONTROLLER with SPI™  
1
FEATURES  
APPLICATIONS  
•
•
•
•
•
Cellular Phones  
PDA, GPS, and Media Players  
Portable Instruments  
Point-of-Sale Terminals  
Multiscreen Touch Control  
23  
•
4-Wire Touch Screen Interface  
Single 1.2V to 3.6V Supply/Reference  
Ratiometric Conversion  
•
•
•
Effective Throughput Rate:  
–
Up to 20kHz (8 Bit) or 10kHz (12 Bit)  
•
•
•
Preprocessing to Reduce Bus Activity  
SPI Interface  
DESCRIPTION  
The TSC2008 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.  
Simple, Command-Based User Interface:  
–
–
TSC2046 Compatible  
8- or 12-Bit Resolution  
•
•
•
•
•
•
On-Chip Temperature Measurement  
Touch Pressure Measurement  
Digital Buffered PENIRQ  
On-Chip, Programmable PENIRQ Pullup  
Auto Power-Down Control  
Low Power:  
In addition to these standard features, the TSC2008  
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.  
–
–
–
32.4µA at 1.2V, Fast Mode, 8.2kHz Eq Rate  
43.8µA at 1.8V, Fast Mode, 8.2kHz Eq Rate  
58.4µA at 2.7V, Fast Mode, 8.2kHz Eq Rate  
The TSC2008 supports an SPI serial bus and data  
transmission protocol in all three defined modes:  
•
•
Software Reset  
standard,  
fast,  
and  
high-speed.  
It  
offers  
Enhanced ESD Protection:  
programmable resolution of  
accommodate different screen sizes and performance  
needs.  
8
or 12 bits to  
–
–
–
–
±8kV HBM  
±1kV CDM  
Target ±25kV Air Gap Discharge  
Target ±15kV Contact Discharge  
The TSC2008 is available in  
a
12-lead,  
(1,555 ±0,055mm) x (2,055 ±0,055mm) 3 x 4 array,  
wafer chip-scale package (WCSP), and a 16-pin,  
4 x 4 QFN package. The TSC2008 is characterized  
for the –40°C to +85°C industrial temperature range.  
•
1.5 x 2 WCSP-12 and 4 x 4 QFN-16 Packages  
U.S. Patent No. 6246394; other patents pending.  
VDD/REF  
PENIRQ  
X+  
X-  
Y+  
Y-  
Touch  
Screen  
Drivers  
Interface  
SPI  
Serial  
Interface  
and  
Control  
CS  
SAR  
ADC  
Mux  
SCLK  
TEMP  
SDI  
AUX  
SDO  
Internal  
Clock  
GND  
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.  
2
3
SPI is a trademark of Motorola Inc.  
All other trademarks are the property of their respective owners.  
PRODUCT PREVIEW information concerns products in the  
formative or design phase of development. Characteristic data and  
other specifications are design goals. Texas Instruments reserves  
the right to change or discontinue these products without notice.  
Copyright © 2008, Texas Instruments Incorporated  
12345678

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