SBAS484B September   2010  – December 2016 TSC2014

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Electrical Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Thermal Information
    4. 6.4  Recommended Operating Conditions
    5. 6.5  Electrical Characteristics
    6. 6.6  Timing Requirements for : I2C Standard Mode (fSCL = 100 kHz)
    7. 6.7  Timing Requirements for : I2C Fast Mode (fSCL = 400 kHz)
    8. 6.8  Timing Requirements for : I2C High-Speed Mode (fSCL = 1.7 MHz)
    9. 6.9  Timing Requirements for : I2C High-Speed Mode (fSCL = 3.4 MHz)
    10. 6.10 Timing Information
    11. 6.11 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Touch Screen Operation
      2. 7.3.2 4-Wire Touch Screen Coordinate Pair Measurement
      3. 7.3.3 Internal Temperature Sensor
      4. 7.3.4 Analog-to-Digital Converter
        1. 7.3.4.1 Data Format
        2. 7.3.4.2 Reference
        3. 7.3.4.3 Variable Resolution
        4. 7.3.4.4 Conversion Clock and Conversion Time
        5. 7.3.4.5 Touch Detect
        6. 7.3.4.6 Preprocessing
          1. 7.3.4.6.1 Preprocessing—Median Value Filter and Averaging Value Filter
        7. 7.3.4.7 Zone Detection
    4. 7.4 Device Functional Modes
      1. 7.4.1 I2C Interface
        1. 7.4.1.1 I2C Fast or Standard Mode (F/S Mode)
        2. 7.4.1.2 I2C High-Speed Mode (Hs Mode)
      2. 7.4.2 Touch Screen Measurements
        1. 7.4.2.1 Conversion Controlled by TSC2014 Initiated by TSC2014 (TSMode 1)
        2. 7.4.2.2 Conversion Controlled by TSC2014 Initiated by Host (TSMode 2)
        3. 7.4.2.3 Conversion Controlled by Host (TSMode 3)
    5. 7.5 Programming
      1. 7.5.1 Digital Interface
        1. 7.5.1.1 Address Byte
          1. 7.5.1.1.1 Bit D0: R/W
      2. 7.5.2 Start A Write Cycle
      3. 7.5.3 Register Access
      4. 7.5.4 Register Reset
    6. 7.6 Register Maps
      1. 7.6.1 R/W
      2. 7.6.2 Control Byte 0
      3. 7.6.3 Control Byte 1
        1. 7.6.3.1 Touch Screen Scan Function for XYZ or XY
          1. 7.6.3.1.1 C3-C0 = 0000 or 0001
        2. 7.6.3.2 Touch Screen Sensor Connection Tests for X-Axis and Y-Axis
          1. 7.6.3.2.1 C3-C0 = 1001
          2. 7.6.3.2.2 C3-C0 = 1010
        3. 7.6.3.3 Touch Sensor Short-Circuit Test
          1. 7.6.3.3.1 C3-C0 = 1011
          2. 7.6.3.3.2 C3-C0 = 1100
          3. 7.6.3.3.3 RM
          4. 7.6.3.3.4 SWRST
          5. 7.6.3.3.5 STS
      4. 7.6.4 Communication Protocol
        1. 7.6.4.1 Configuration Register 0
          1. 7.6.4.1.1 PSM
          2. 7.6.4.1.2 STS
          3. 7.6.4.1.3 RM
          4. 7.6.4.1.4 CL1, CL0
          5. 7.6.4.1.5 PV2-PV0
          6. 7.6.4.1.6 PR2-PR0
          7. 7.6.4.1.7 SNS2-SNS0
          8. 7.6.4.1.8 DTW
          9. 7.6.4.1.9 LSM
        2. 7.6.4.2 Configuration Register 1
          1. 7.6.4.2.1 TBM3-TBM0
          2. 7.6.4.2.2 BTD2-BTD0
      5. 7.6.5 Configuration Register 2
        1. 7.6.5.1 PINTS1 (default 0)
        2. 7.6.5.2 PINTS0 (default 0)
        3. 7.6.5.3 M1, M0, W1, W0 (default 0000)
        4. 7.6.5.4 TZ1 and TZ0, or AZ1 and AZ0 (default 00)
        5. 7.6.5.5 MAVE (default is 00000)
      6. 7.6.6 Converter Function Select Register
        1. 7.6.6.1 CFN15-CFN13
        2. 7.6.6.2 CFN12-CFN0
        3. 7.6.6.3 DAV Bits
        4. 7.6.6.4 RESET Flag
        5. 7.6.6.5 X CON
        6. 7.6.6.6 Y CON
        7. 7.6.6.7 Y SHR
        8. 7.6.6.8 PDST
        9. 7.6.6.9 ID[1:0]
      7. 7.6.7 Data Registers
        1. 7.6.7.1 X, Y, Z1, Z2, AUX, TEMP1 and TEMP2 Registers
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Auxiliary and Temperature Measurement
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 Power Supply Decoupling Capacitors
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • 4-Wire Touch Screen Interface
  • Ratiometric Conversion
  • Single 1.2V to 3.6V Supply
  • Preprocessing to Reduce Bus Activity
  • High-Speed I2C-Compatible Interface
  • Internal Detection of Screen Touch
  • Register-Based Programmable:
    • 10-Bit or 12-Bit Resolution
    • Sampling Rates
    • System Timing
  • On-Chip Temperature Measurement
  • Touch Pressure Measurement
  • Auto Power-Down Control
  • Low Power:
    • 430μW at 1.8V, 50SSPS
    • 320μW at 1.6V, 50SSPS
    • 190μW at 1.2V, 50SSPS
    • 58μW at 1.6V, 8.2kSPS Eq. Rate
    • 37μW at 1.2V, 8.2kSPS Eq. Rate
  • Enhanced ESD Protection:
    • ±8kV HBM
    • ±1kV CDM
    • ±25kV Air Gap Discharge
    • ±11kV Contact Discharge
  • 1.5 x 2.0 WCSP-12 Package (1)
U.S. Patent No. 6,246,394; other patents pending.
1. U.S. Patent No. 6,246,394; other patents pending.

2 Applications

  • Cellular Phones
  • Portable Instruments
  • MP3 Players, Pagers
  • Multiscreen Touch Control

3 Description

The TSC2014 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 as low as 1.2V, which can be supplied by a single-cell battery. It contains a complete, ultralow-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 TSC2014 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 TSC2014 supports an I2C serial bus and data transmission protocol in all three defined modes: standard, fast, and high-speed. It offers programmable resolution of 10 or 12 bits to accommodate different screen sizes and performance needs.

The TSC2014 is available in a miniature, 12-lead,
3 x 4 array, (1.555 ±0.055)mm x (2.055 ±0.055)mm wafer chip-scale package (WCSP) package. The device is characterized for the –40°C to +85°C industrial temperature range.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TSC2014 DSBGA (12) (1.555 ±0.055)mm x (2.055 ±0.055)mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Block Diagram

TSC2014 fbd_bas484.gif

4 Revision History

Changes from A Revision (February 2012) to B Revision

  • Added Device Information table, ESD Ratings table, Recommended Operating Conditions table, Feature Description section, Device Functional Modes section, Application and Implementation sectionPower Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information sectionGo
  • Deleted the ORDERING INFORMATION tableGo

Changes from * Revision (September 2010) to A Revision

  • Changed notes for 100kHz Timing Requirements tableGo
  • Changed notes for 400kHz Timing Requirements tableGo
  • Changed notes for 1.7MHz Timing Requirements tableGo
  • Changed Fall Time for SDA Signal from 20ns to 1ns for 1.7MHz Timing Requirements tableGo
  • Changed notes for 3.4MHz Timing Requirements tableGo
  • Changed Fall Time for SDA Signal from 10ns to 1ns for 3.4MHz Timing Requirements tableGo