Please note that Cypress is an Infineon Technologies Company. The document following this cover page is marked as Cypress document as this is the company that originally developed the product. Please note that Infineon will continue to offer the product to new and existing customers as part of the Infineon product portfolio. Continuity of document content The fact that Infineon offers the following product as part of the Infineon product portfolio does not lead to any changes to this document. Future revisions will occur when appropriate, and any changes will be set out on the document history page. Continuity of ordering part numbers Infineon continues to support existing part numbers. Please continue to use the ordering part numbers listed in the datasheet for ordering. www.infineon.comCY8C20224/CY8C20324 CY8C20424/CY8C20524 CapSense PSoC Programmable System-on-Chip CapSense PSoC Programmable System-on-Chip High-performance CapSense Features Ultra fast scan speed 1 kHz (nominal) Low power, configurable CapSense Reliable finger detection through 5 mm thick acrylic Configurable capacitive sensing elements Excellent EMI and AC noise immunity operating voltage Industry best flexibility Operating voltage: 2.4 V to 5.25 V 8 KB flash program storage 50,000 erase and write cycles Low operating current 512-bytes SRAM data storage Active 1.5 mA (at 3.0 V, 12 MHz) Bootloader for ease of field reprogramming Sleep 2.8 A (at 3.3 V) Partial flash updates Supports up to 25 capacitive buttons Flexible flash protection modes Supports one slider Interrupt controller Up to 10 cm proximity sensing In-system serial programming (ISSP) Supports up to 28 general-purpose I/O (GPIO) pins Free complete development tool (PSoC Designer) Drive LEDs and other outputs Full-featured, in-circuit emulator and programmer Configurable LED behavior (fading, strobing) Full-speed emulation LED color mixing (RBG LEDs) Complex breakpoint structure Pull-up, high Z, open-drain, and CMOS drive modes on all 128 KB trace memory GPIOs Additional system resources Internal 5.0% 6 or12 MHz main oscillator Internal low-speed oscillator at 32 kHz Configurable communication speeds 2 Low external component count I C slave No external crystal or oscillator components SPI master and SPI slave Watchdog and sleep timers No external voltage regulator required Internal voltage reference Integrated supervisory circuit Logic Block Diagram Port 3 Port 2 Port 1 Port 0 3V LDO PSoC CORE System Bus Global Analog Interconnect SRAM SROM Flash 8K 512 Bytes CPU Core Sleep and Interrupt (M8C) Watchdog Controller 6/12 MHz Internal Main Oscillator Analog CapSense Ref. ANALOG Basic SYSTEM Block POR and LVD I2C Slave/SPI Analog Master-Slave Mux System Resets SYSTEM RESOURCES Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 001-41947 Rev. *P Revised August 22, 2019