Infineon Technologies CY8C20566A-24PVXIT

Overview

CY8C20566A-24PVXIT from Cypress Semiconductor is a haptics-enabled CapSense® programmable mixed-signal controller featuring an M8C 8-bit Harvard-architecture CPU (up to 24 MHz), 16 KB flash/2 KB SRAM, integrated Immersion TS2000 ERM haptics driver, and configurable capacitive sensing for up to 28 GPIOs. It operates from 1.71 V to 5.5 V across –40 °C to +85 °C and supports I²C (up to 400 kHz) and SPI interfaces - deployed in touch-enabled human interface modules for industrial HMIs and consumer electronics.

For engineers reviewing the CY8C20566A-24PVXIT datasheet, CY8C20566A-24PVXIT pinout, CY8C20566A-24PVXIT application, or CY8C20566A-24PVXIT equivalent, key selection criteria include its integrated haptics control logic, SmartSense™ auto-tuning CapSense capability, 24-pin QFN package with 20 GPIOs supporting analog/digital dual-mode operation, and precision internal oscillators (6/12/24 MHz IMO + 32 kHz ILO).

Technical Context

The device integrates a dedicated CapSense analog block with hardware-accelerated scanning, configurable IDACs, and a 1-V/1.2-V internal analog reference - enabling robust self-capacitance and mutual-capacitance sensing without external components. Its analog mux bus connects all GPIOs to comparators and ADC resources, supporting simultaneous touchpad, slider, and proximity sensor configurations.

Haptics control is implemented via a dedicated TS2000-compatible engine driving up to three ERM actuators with 14 preloaded waveforms; timing-critical functions are synchronized using independent 16-bit timers and sleep/wake interrupts sourced from the ILO or IMO. The device uses ISSP for in-system programming and supports partial flash updates with 50,000 erase/write cycles.

Key Specifications

Pinout & Package

Package: 24-pin QFN (4 × 4 × 0.6 mm), RoHS-compliant, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar capacitive touch and haptics controller applications.

Compared with CY8C20446H-24LQXIT, the CY8C20566A-24PVXIT offers identical functionality in a smaller 24-pin QFN, trading I/O count for space-constrained designs; versus MTCH6302-I/ST, it provides full embedded autonomy, eliminating host dependency for CapSense tuning and haptics playback - critical for low-latency or resource-limited systems.

Availability

CY8C20566A-24PVXIT is available at Aetrix Electronics and suitable for industrial HMIs, consumer appliance controls, medical device keypads, and automotive cabin interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for CY8C20566A-24PVXIT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) is a fabless semiconductor company specializing in programmable system-on-chip solutions for embedded control, connectivity, and human interface applications.

The CY8C20xxx PSoC® CapSense family was designed specifically to replace discrete touch controllers, microcontrollers, and haptics drivers with a single configurable chip - targeting cost-sensitive, space-constrained touch interfaces requiring high noise immunity and zero-tuning deployment.

FAQ

Does CY8C20566A-24PVXIT support mutual-capacitance touchpad operation?

Yes, the device supports both self-capacitance and mutual-capacitance sensing modes via its configurable CapSense block and global analog mux bus. Mutual-capacitance operation requires pairing specific GPIOs as transmit/receive channels and is enabled through PSoC Designer configuration - validated for up to 5×5 touchpad matrices in application note AN71095.

What is the maximum sink current capability per GPIO on CY8C20566A-24PVXIT?

Each GPIO supports up to 25 mA sink current, with a total device limit of 120 mA across all ports. This rating applies under continuous DC conditions at VDD = 3.3 V and TA = 25 °C, as specified in the DC General Purpose I/O Electrical Specifications table (Rev. *E, page 13).

Can CY8C20566A-24PVXIT operate without an external crystal?

Yes - it includes an internal main oscillator (IMO) with selectable frequencies of 6 MHz, 12 MHz, or 24 MHz (±5%), sufficient for most CapSense scanning and haptics timing. An external 32 kHz crystal is optional and used only when higher precision for sleep/wake timers is required beyond the internal 32 kHz ILO.

Is SmartSense™ tuning supported in production firmware without PSoC Designer?

Yes - SmartSense™ is implemented in hardware and firmware libraries included in the final compiled hex image. Once configured and tuned in PSoC Designer, the generated code embeds adaptive algorithms that run autonomously on the target device, requiring no runtime host intervention or external calibration tools.