Overview
The TSC2017IYZGR, produced by Texas Instruments, is a very low-power touch screen controller designed for power-sensitive, handheld applications. It operates with a single 1.6V to 3.6V supply voltage, making it suitable for devices powered by a single-cell battery. The TSC2017 features a complete, ultra-low power, 12-bit analog-to-digital (A/D) resistive touch screen converter, including drivers and control logic to measure touch pressure and temperature. It supports I2C serial bus in standard, fast, and high-speed modes, and offers preprocessing of touch screen measurements to reduce bus loading and conserve host processor resources.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Power-supply voltage, VDD | 1.6 | 3.6 | V | |
| Resolution | Programmable: 8 or 12 bits | |||
| Integral linearity | ±1.5 | LSB | ||
| Offset error | -3.1 | 0.7 | LSB | |
| Gain error | 0.1 | LSB | ||
| Effective throughput rate (8-bit) | 2.3 kSPS | |||
| Effective throughput rate (12-bit) | 1.75 kSPS | |||
| Quiescent supply current (VDD = 1.8V, Fast Mode) | 39.31 μA | |||
| Power down supply current | 0 | 0.8 μA | ||
| ESD protection | ±8kV HBM | ±25kV Air Gap Discharge | ||
| Package type | 12-lead WCSP (2.1 x 1.6 mm) | |||
| Operating temperature range | -40°C | +85°C |
Key Features
- Very low-power touch screen controller
- Single 1.6V to 3.6V supply voltage
- Programmable resolution of 8 or 12 bits
- I2C serial bus interface supporting standard, fast, and high-speed modes
- On-chip temperature measurement and touch pressure measurement
- Digital buffered PENIRQ and on-chip, programmable PENIRQ pull-up
- Comprehensive reset schemes including power-on, software, and hardware resets
- Auto power-down control
- Enhanced ESD protection for IEC testing
- Preprocessing to reduce bus activity and conserve host processor resources
- Miniature 12-lead WCSP package (2.1 x 1.6 mm)
Applications
- Cellular phones
- PDA, GPS, and media players
- Portable instruments
- Point-of-sale terminals
- Multiscreen touch control systems
Q & A
- What is the operating voltage range of the TSC2017?
The TSC2017 operates with a single supply voltage ranging from 1.6V to 3.6V.
- What are the resolution options for the TSC2017?
The TSC2017 offers programmable resolution of 8 or 12 bits.
- What type of serial interface does the TSC2017 support?
The TSC2017 supports I2C serial bus in standard, fast, and high-speed modes.
- Does the TSC2017 have built-in temperature measurement?
Yes, the TSC2017 includes on-chip temperature measurement.
- What is the package type and size of the TSC2017?
The TSC2017 is available in a 12-lead WCSP package measuring 2.1 x 1.6 mm.
- What is the operating temperature range of the TSC2017?
The TSC2017 operates over an industrial temperature range of -40°C to +85°C.
- Does the TSC2017 have ESD protection?
Yes, the TSC2017 features enhanced ESD protection for IEC testing.
- How does the TSC2017 manage power consumption?
The TSC2017 has auto power-down control and preprocessing to reduce bus activity, thus conserving host processor resources.
- What are some typical applications of the TSC2017?
The TSC2017 is used in cellular phones, PDA, GPS, media players, portable instruments, point-of-sale terminals, and multiscreen touch control systems.
- What is the quiescent supply current of the TSC2017 at 1.8V in Fast Mode?
The quiescent supply current is approximately 39.31 μA at 1.8V in Fast Mode.
