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
` SPI Interface
` 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:
32.4mA at 1.2V, Fast Mode, 8.2kHz Eq Rate
43.8mA at 1.8V, Fast Mode, 8.2kHz Eq Rate
58.4mA at 2.7V, Fast Mode, 8.2kHz Eq Rate
` Software Reset
` Enhanced ESD Protection:
±8kV HBM
±1kV CDM
Target ±25kV Air Gap Discharge
Target ±15kV Contact Discharge
` 1.5 x 2 WCSP-12 and 4 x 4 QFN-16 Packages
U.S. Patent No. 6246394; other patents pending.Application· Cellular Phones
· PDA, GPS, and Media Players
· Portable Instruments
· Point-of-Sale Terminals
· Multiscreen Touch ControlSpecifications
| PARAMETER |
TSC2008 |
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 |
|
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 - TA)/qJA |
|
| Thermal impedance, qJA |
QFN package |
47 |
/W |
| WCSP |
Low-K |
113 |
/W |
| High-K |
62 |
/W |
| Operating free-air temperature range, TA |
40 to +85 |
|
| Storage temperature range, TSTG |
65 to +150 |
|
| Junction temperature, TJ Max |
+150 |
|
| Lead temperature |
Vapor phase (60 sec) |
+215 |
|
| Infrared (15 sec) |
+220 |
|
(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 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 saisnglleo-wcelal sba1tt.e2rVy., Itwhcoicnhtaicnasna bceomspuleptpeli,edultrbay-lowa 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 TSC2008 omfefearssurempreenptrsoctoesrseindguce obfus lothaedingt,otuhcuhs resdcurceienng the consumption of host processor resources that can then be redirected to more critical functions.
The TSC2008 supports an SPI serial bus and data transmission protocol in all three defined modes:sptraongdraamrdm, ablfeast,resoaluntdion hoigfh-s8peeodr . 12It bitosffetros accommodate different screen sizes and performance needs.
The TSC2008 is available in a 12-lead,1,555 ±0,055mm) x (2,055 ±0,055mm) 3 x 4 array,4waxfe4r QchFiNp-spcaaclekagpea.ckTahgeeT(SWCC20S0P8), isancdharaac1te6r-ipzeind,for the 40°C to +85°C industrial temperature range.
TSC2008 Data Sheet
