TSC2007_1 Datasheet, PDF (1/41 Pages) Texas Instruments – 1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire Micro TOUCH SCREEN CONTROLLER with I2C™ Interface

BurrĆBrown Products
from Texas Instruments
TSC2007 ®
TSC2007
SBAS405 – MARCH 2007
1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire
Micro TOUCH SCREEN CONTROLLER with I²C™ Interface
FEATURES
• 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
• I²C Interface Supports:
– Standard, Fast, and High-Speed Modes
• Simple, Command-Based User Interface:
– TSC2003 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:
– 32.24µA at 1.2V, Fast Mode, 8.2kHz Eq Rate
– 39.31µA at 1.8V, Fast Mode, 8.2kHz Eq Rate
– 53.32µA at 2.7V, Fast Mode, 8.2kHz Eq Rate
• Enhanced ESD Protection:
– ±8kV HBM
– ±1kV CDM
– ±25kV Air Gap Discharge
– ±15kV Contact Discharge
• 1.5 x 2 WCSP-12 and 5 x 6.4 TSSOP-16
Packages
U.S. Patent NO. 6246394; other patents pending.
APPLICATIONS
• Cellular Phones
• PDA, GPS, and Media Players
• Portable Instruments
• Point-of-Sale Terminals
• Multiscreen Touch Control
DESCRIPTION
The TSC2007 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 1.2V, 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 TSC2007
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 TSC2007 supports an I²C serial bus and data
transmission protocol in all three defined modes:
standard, fast, and high-speed. It offers
programmable resolution of 8 or 12 bits to
accommodate different screen sizes and
performance needs.
The TSC2007 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,
TSSOP package. The TSC2007 is characterized for
the –40°C to +85°C industrial temperature range.
X+
X-
Y+
Y-
AUX
Touch
Screen
Drivers
Interface
TEMP
VDD/REF
SAR
Mux
ADC
Internal
Clock
GND
I²C
Serial
Interface
and
Control
PENIRQ
SCL
SDA
A[0:1]
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.
I2C is a trademark of NXP Semiconductors.
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 © 2007, Texas Instruments Incorporated