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:
32.24mA at 1.2V, Fast Mode, 8.2kHz Eq Rate
39.31mA at 1.8V, Fast Mode, 8.2kHz Eq Rate
53.32mA 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 PackagesApplication· Cellular Phones
· PDA, GPS, and Media Players
· Portable Instruments
· Point-of-Sale Terminals
· Multiscreen Touch ControlPinout
Specifications
|
|
TSC2007 |
UNIT |
|
Voltage |
Analog input X+, Y+, AUX to GND |
0.4 to VDD + 0.1 |
V |
|
Analog input X, Y to GND |
0.4 to VDD + 0.1 |
V |
|
Voltage range |
VDD to GND |
0.3 to +5 |
V |
|
Digital input voltage to GND |
0.3 to VDD + 0.3 |
V |
|
Digital output voltage to GND |
0.3 to VDD + 0.3 |
V |
|
Power dissipation |
(TJ Max - T A)/JA |
|
|
Thermal impedance, qJA |
TSSOP Package |
86 |
°C/W |
|
WCSP package |
Low-K |
113 |
|
High-K |
62 |
|
Operating free-air temperature range, TA |
40 to +85 |
°C |
|
Storage temperature range, TSTG |
65 to +150 |
°C |
|
Junction temperature, TJ Max |
+150 |
°C |
|
Lead temperature |
Vapor phase (60 sec) |
+215 |
°C |
|
Vapor phase (60 sec) |
+220 |
°C |
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated is not implied. Exposure to absolute-maximum rated conditions for extended periods may affect device reliability.
DescriptionThe 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.
TSC2007 Data Sheet
