Infineon Technologies CY8C20524-12PVXIT

Overview

CY8C20524-12PVXIT from Infineon Technologies (formerly Cypress Semiconductor) is an 8-bit programmable system-on-chip (PSoC) with integrated CapSense® capacitive sensing engine, 8 KB flash, 512 bytes SRAM, and up to 28 GPIOs. It operates from 2.4 V to 5.25 V, delivers 1.5 mA active current at 3.0 V/12 MHz, supports up to 25 capacitive buttons + 1 slider, and enables proximity sensing through 5 mm acrylic - deployed in notebook multimedia keypads and industrial HMI panels.

For engineers reviewing the CY8C20524-12PVXIT datasheet, CY8C20524-12PVXIT pinout, CY8C20524-12PVXIT application, or CY8C20524-12PVXIT equivalent, key selection criteria include its integrated CapSense analog block, 6/12 MHz internal main oscillator, I²C slave and SPI master/slave interfaces, 3.3 V LDO regulator, and support for partial flash updates via ISSP.

Technical Context

The device integrates a Harvard-architecture M8C 8-bit CPU core running at up to 12 MHz (2 MIPS), paired with dedicated hardware-accelerated CapSense logic including relaxation oscillator, IDAC reference buffer, comparator, and global analog bus. Its analog mux connects all GPIOs to the CapSense block for configurable button/slider/proximity sensing without external components.

System resources include a 32 kHz internal low-speed oscillator, watchdog and sleep timers, POR/LVD circuitry, 1.8 V internal analog reference, and a fixed 3.0 V/5 V-input LDO with register-controlled bypass mode. Communication is supported via I²C (50–400 kHz) and SPI (up to 3 MHz), both implemented in hardware with no CPU overhead.

Key Specifications

Pinout & Package

CY8C20524-12PVXIT is housed in a 28-pin SSOP (Shrink Small Outline Package) with 0.635 mm pitch, body width 7.5 mm, and JEDEC MS-013AC compliant footprint. The package supports standard reflow profiles and provides full GPIO access across Ports 0–3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C20424-12PVXI and MTCH101-I/ST, CY8C20524-12PVXIT offers the highest GPIO count and full programmability for embedded touch logic, making it optimal for self-contained HMI subsystems where firmware-defined behavior and local LED control are required.

Availability

CY8C20524-12PVXIT is available at Aetrix Electronics and suitable for notebook multimedia interfaces, industrial HMI panels, and consumer appliance control systems requiring stable component supply and long-term lifecycle support.

Supply support for CY8C20524-12PVXIT 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

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, delivering power management, sensing, and microcontroller solutions for automotive, industrial, and IoT applications.

This device belongs to the PSoC® 1 family - a line of mixed-signal programmable SoCs designed specifically for embedded capacitive sensing, human-machine interface, and low-power control applications with integrated analog/digital flexibility.

FAQ

What development tools are required to program CY8C20524-12PVXIT?

PSoC Designer™ is the official IDE for this device, providing drag-and-drop user module configuration, automatic API generation, C/assembly editing, and integrated in-circuit emulation. Programming is performed via ISSP using a MiniProg1 or compatible programmer - no external debugger hardware is needed for basic firmware loading and debugging.

Does CY8C20524-12PVXIT require an external crystal?

No. It includes an internal 6/12 MHz main oscillator (IMO) and 32 kHz low-speed oscillator (ILO), eliminating need for external timing components. An external crystal may be connected to XTAL_IN/XTAL_OUT only if higher frequency accuracy or stability is required beyond IMO specifications.

Can CY8C20524-12PVXIT drive RGB LEDs directly?

Yes. Its GPIOs support hardware-configured LED drive modes including fading, strobing, and color mixing. Each pin can source/sink up to 25 mA, enabling direct driving of common-anode or common-cathode RGB LEDs without external transistors in low-current configurations.

How is CapSense performance affected by environmental noise?

The device uses spread-spectrum scanning, shielded relaxation oscillator architecture, and hardware-based baseline tracking to achieve >5:1 SNR in typical EMI environments. Tested immunity includes 50/60 Hz AC noise and RF fields up to 10 V/m - no external shielding or guard traces are required for most industrial or consumer deployments.