Burr Brown Products
from Texas Instruments
TS
C2
®
007
SBAS405 – MARCH 2007
1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire
Micro TOUCH SCREEN CONTROLLER with I
2
C™ 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
I
2
C 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
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 I
2
C 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.
VDD/REF
PENIRQ
•
•
•
•
•
•
•
•
U.S. Patent NO. 6246394; other patents pending.
Preprocessing
X+
X-
Y+
Y-
Touch
Screen
Drivers
Interface
TEMP
Mux
SAR
ADC
AUX
Internal
Clock
I
2
C
Serial
Interface
and
Control
SCL
SDA
A[0:1]
GND
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
BURR-BROWN [ BURR-BROWN CORPORATION ]
