CapSense™ Applications
CY8C20x36/46/66, CY8C20396
CypressSemiconductor Corporation • 198 Champion Court • San Jose,CA 95134-1709 • 408-943-2600
Document Number: 001-12696 Rev. *D Revised March 17, 2009
Features
■1.71V to 5.5V Operating Range
■Low Power CapSense™ Block
❐Configurable Capacitive Sensing Elements
❐Supports Combination of CapSense Buttons, Sliders,
Touchpads, Touch Screens, and Proximity Sensor
■Powerful Harvard Architecture Processor
❐M8C Processor Speeds Running to 24 MHz
❐Low Power at High Speed
❐Interrupt Controller
❐Temperature Range: -40°C to +85°C
■Flexible On-Chip Memory
❐Three Program/Data Storage Size Options:
• CY8C20x36: 8K Flash / 1K SRAM
• CY8C20x46: 16K Flash / 2K SRAM
• CY8C20x66: 32K Flash / 2K SRAM
❐50,000 Flash Erase/Write Cycles
❐Partial Flash Updates
❐Flexible Protection Modes
❐In-System Serial Programming (ISSP)
■Full-Speed USB
❐Available on CY8C20396 and CY8C20666 Only
❐12 Mbps USB 2.0 Compliant
❐Eight Unidirectional Endpoints
❐One Bidirectional Control Endpoint
❐Dedicated 512 Byte Buffer
❐Internally Regulated at 3.3V
■Precision, Programmable Clocking
❐Internal Main Oscillator: 6/12/24 MHz ± 5%
❐Internal Low Speed Oscillator at 32 kHz for Watchdog and
Sleep Timers
❐Precision 32 kHz Oscillator for Optional External Crystal
(CY8C20x46/66 only)
❐0.25% Accuracy for USB with No External Components
(CY8C20396 and CY8C20666 only)
■Programmable Pin Configurations
❐Up to 36 GPIO (Depending on Package)
❐Dual Mode GPIO: All GPIO Support Digital IO and Analog
Input
❐25 mA Sink Current on All GPIO
❐Pull up, High Z, Open Drain Modes on All GPIO
❐CMOS Drive Mode(5 mA Source Current) on Ports 0 and 1:
• 20 mA (at 3.0V) Total Source Current on Port 0
• 20 mA (at 3.0V) Total Source Current on Port 1
❐Selectable, Regulated Digital IO on Port 1
❐Configurable Input Threshold on Port 1
❐Hot Swap Capability on all Port 1 GPIO
■Versatile Analog Mux
❐Common Internal Analog Bus
❐Simultaneous Connection of IO
❐High PSRR Comparator
❐Low Dropout Voltage Regulator for All Analog Resources
■Additional System Resources
❐I2C™ Slave:
• Selectable to 50 kHz, 100 kHz, or 400 kHz
• No Clock Stretching Required (under most conditions)
• Implementation During Sleep Modes with Less Than
100 µA
• Hardware Address Validation
❐SPI™ Master and Slave: Configurable 46.9 kHz - 12 MHz
❐Three 16-Bit Timers
❐Watchdog and Sleep Timers
❐Internal Voltage Reference
❐Integrated Supervisory Circuit
■Complete Development Tools
❐Free Development Tool (PSoC Designer™)
❐Full Featured, In-Circuit Emulator and Programmer
❐Full Speed Emulation
❐Complex Breakpoint Structure
❐128K Trace Memory
■Package Options
❐CY8C20x36:
• 16-Pin 3 x 3 x 0.6 mm QFN
• 24-Pin 4 x 4 x 0.6 mm QFN
• 32-Pin 5 x 5 x 0.6 mm QFN
❐CY8C20x46:
• 16-Pin 3 x 3 x 0.6 mm QFN
• 24-Pin 4 x 4 x 0.6 mm QFN
• 32-Pin 5 x 5 x 0.6 mm QFN
❐CY8C20396: 24-Pin 4 x 4 x 0.6 mm QFN
❐CY8C20x66:
• 32-Pin 5 x 5 x 0.6 mm QFN
• 48-Pin 7 x 7 x 1.0 mm QFN (with USB)
• 48-Pin SSOP
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