TSC2011 Datasheet, PDF (1/8 Pages) Texas Instruments – Nanopower, 4-Wire Resistive Touch and Haptic Controller with I2C™ Serial Interface

TSC2011
www.ti.com
SBAS516 – NOVEMBER 2011
Nanopower, 4-Wire Resistive Touch and Haptic Controller with I²C™ Serial Interface
Check for Samples: TSC2011
FEATURES
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•2 Advanced 4-Wire Touch Screen Interface
• Preprocessing to Reduce Bus Activity
• Integrated Haptic Feedback Control
– On Chip H-Bridge: 250mA with Over
Current Status
– On Chip PWM: 20KHz to 160KHz, 0% to
100%
– On Chip Synthesizer (10Hz~20KHz Sine)
– Wave Amplitude Modulation: 255 Levels
• High-Speed I²C-Compatible Interface
• Register-Based Programmable
– 10-Bit or 12-Bit ADC Resolution
– Sampling Rates
– On Chip Command Profiler
– GPO Pins for External Drive or IR TX
• Low Power Design:
– Single 1.2V to 3.6V Supply Possible
– Low Power Haptic Driver (PWM+H-Bridge)
– Auto Power Down
– 590µW at 1.8V, 50SSPS
– 450µW at 1.6V, 50SSPS
– 50µW at 1.2V, 8.2kSPS
• Enhanced IEC ESD Protection
– ±25kV Air Discharge, ±15kV Contact
• 4-mm×4-mm QFN-20 and 2.5-mm×2.5-mm
WCSP-25 (Preview) Packages
U.S. Patent No. 6,246,394; 7,812,830; 7,965,280; 7,999,793
APPLICATIONS
• Smart Phones, MP3, PMPs, Games
• Portable Industrial/Medical Instruments, POS
DESCRIPTION
The TSC2011 is a very low power Touch Screen
Controller designed to work with a low cost 4-wire
resistive touch sensor but also includes a
comprehensive set of haptic feedbacks to provide a
complete human machine interface. Unlike other
competing solutions that rely on a simple, one way
"trigger" mechanism, the haptic controller and touch
screen controller work side-by-side to ensure
consistent haptic effect and touch detection. This
synchronized operation minimizes the skew between
detection and feedback, reducing system power
consumption. Other advanced features include a
bandwidth saving preprocessing, integrated H-bridge
to drive actuator and GPO pins may be used for an
IR proximity circuit. These make the TSC2011 a
perfect device for low cost consumer applications that
can benefit from many new bidirectional human
machine interactions such as touch, gaming, and
supplemental effects of ring tone.
X+
X–
Y+
Y–
AUX/IRRX
H+/U+
H–/U–
External H-
Bridge Driver
GPIO1/D–/IRTX
GPIO0/D+/IRPWN
Touch Screen
Drivers
Interface
TEMP
Touch Engine
With
Analog Signal
Processing
Overcurrent
Protection
H-Bridge Driver
10~20kHz
PWM
Enhanced ESD
Touch Screen
Controller
Status Register
Haptic
Controller
Profiler
Parameters
PENIRQ
DAV
PINTDAV
(optional)
AD0
SCL
SDA
RESET
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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.
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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 © 2011, Texas Instruments Incorporated