CYTMA445A
SUMMARY
TrueTouch® Multi-Touch All-Points
Touchscreen Controller
Features
■ Multi-touch capacitive touchscreen controller
❐ 32-bit ARM® Cortex™ CPU
❐ Register-configurable
■ Power (configuration-dependent)
❐ 1.71- to 1.95-V or 2.0- to 5.5-V digital and I/O supply
❐ 2.65- to 4.7-V analog supply
❐ Noise-suppression technologies for battery charger and
display
❐ 4-mW average power
❐ 5.7-μW typical deep-sleep power
• Effective 24-V drive for higher signal-to-noise ratio (SNR)
• ChargerArmor™ for charger noise immunity
• External display synchronization
❐ Water rejection and wet-finger tracking using DualSense™
❐ Multi-touch glove with automatic mode switching
• Ten fingers with thin glove (≤1-mm thick)
• Two fingers with thick glove (≤5-mm thick)
❐ Fingernail tracking
❐ Grip suppression
❐ Large object rejection
❐ Automatic baseline tracking to environmental changes
❐ Low-power look-for-touch mode
❐ Field upgrades via bootloader
■ Sensor and system design (configuration-dependent)
❐ Supports a variety of touchscreen sensors and stackups
• Manhattan, diamond, Single-Layer Independent
Multi-touch (SLIM®), and Totem-pole patterns
• Sensor-on-Lens (SOL)
• Plastic (PET) and glass-sensor substrates
• LCD, AMOLED, and IPS displays
• Metal mesh
❐ Single-layer flexible printed circuit (FPC) routing enabled by
flexible TX/RX configurations
■ Communication interface
❐ I2C slave at 100 and 400 kbps
❐ SPI slave bit rates up to 8 Mbps[1]
❐ Android™ driver support
❐ Cypress Manufacturing Test Kit (MTK)
❐ Touchscreen sensor self-test and Panel ID reporting
■ Package options
❐ 44-pin 5 × 5 × 0.6-mm QFN (0.35-mm lead pitch)
❐ 48-pin 6 × 6 × 0.6-mm QFN (0.4-mm lead pitch)
■ System performance (configuration dependent)
❐ Screen sizes up to 5.0-inch diagonal
• 4.8-mm sensor pitch; 16:9 aspect ratio
❐ Up to 36 sense pins
• 308 intersections (22 × 14)
❐ Reports up to ten fingers
❐ Small finger support down to 4 mm
❐ Large finger support up to 30 mm
❐ Refresh rate up to 300 Hz; other rates configurable
❐ TX frequency up to 500 kHz
❐ Best-in-class charger noise immunity
• Immunity up to 35-V peak-to-peak (VPP
)
• Immunity to AT&T® Zero charger noise
Note
1. SPI support is only available in 48-pin QFN package.
Cypress Semiconductor Corporation
Document Number: 001-90901 Rev. *D
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised June 21, 2016