CY8CTST120
TrueTouch™ Single-Touch
Touchscreen Controller
Cypress Semiconductor Corporation
•
198 Champion Court
•
San Jose
, CA 95134-1709
•
408-943-2600
Document Number: 001-46932 Rev. *B
Revised July 31, 2008
Features
■ TrueTouch™ Capacitive Touchscreen Controller
❐ Supports Single-Touch Touchscreen Applications
❐ Supports up to 44 X/Y Sensor Inputs
❐ Supports Screen Sizes 7.3” and below (Typical)
❐ Fast Scan Rates: Typical 0.5 ms per Sensor
❐ High Resolution: Typical 480 x 360 for 3.5-inch screen
❐ Available in 56-Pin QFN Package
❐ Seamless Transition up to Higher Function Multi-Touch Ges-
ture and Multi-Touch All-Points-Addressable Devices
■ Lowest Noise TrueTouch Device
■ Highly Configurable Sensing Circuitry
❐ Allows Maximum Design Flexibility
❐ Allows Trade-Off Between Scan Time and Noise Perfor-
mance
■ Provides Maximum EMI Immunity
❐ Selectable Spread-Spectrum Clock Source
■ Powerful Harvard Architecture Processor
❐ M8C Processor Speeds to 24 MHz
❐ Two 8x8 Multiply, 32-Bit Accumulate
❐ Low Power at High Speed
❐ 3V to 5.25V Operating Voltage
❐ Industrial Temperature Range: –40°C to +85°C
❐ USB Temperature Range: –10°C to +85°C
■ Full-Speed USB (12 Mbps)
❐ Four Uni-Directional Endpoints
❐ One Bi-Directional Control Endpoint
❐ USB 2.0 Compliant
❐ Dedicated 256 Byte Buffer
❐ No External Crystal Required
■ Flexible On-Chip Memory
❐ 16K Flash Program Storage, 50000 Erase/Write Cycles
❐ 1K SRAM Data Storage
❐ In-System Serial Programming (ISSP)
❐ Partial Flash Updates
❐ Flexible Protection Modes
❐ EEPROM Emulation in Flash
■ Precision, Programmable Clocking
❐ Internal ±4 percent 24 and 48 MHz Oscillator
❐ Internal Oscillator for Watchdog and Sleep
❐ 0.25 percent Accuracy for USB with no External Components
■ Additional System Resources
❐ I
2C
™ Slave, Master, and Multi-Master to 400 kHz
❐ Watchdog and Sleep Timers
❐ User-Configurable Low Voltage Detection
❐ Integrated Supervisory Circuit
❐ On-Chip Precision Voltage Reference
■ Complete Development Tools
❐ Free Development Software (PSoC Designer™)
❐ TrueTouch Touchscreen Tuner
❐ Full-Featured, In-Circuit Emulator and Programmer
❐ Full Speed Emulation
❐ Complex Breakpoint Structure
❐ 128K Bytes Trace Memory
■ Programmable Pin Configurations
❐ 25 mA Sink, 10 mA Drive on All GPIO
❐ Pull Up, Pull Down, High Z, Strong, or Open Drain Drive
Modes on All GPIO
❐ Configurable Interrupt on All GPIO
Logic Block Diagram
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