Infineon Technologies CY8C4145PVI-PS431

Overview

CY8C4145PVI-PS431 from Infineon is a PSoC™ 4100PS programmable system-on-chip based on Arm® Cortex®-M0+ CPU, integrating 32 KB flash, 4 KB SRAM, dual ADCs (12-bit SAR + 10-bit single-slope), CAPSENSE™ sigma-delta capacitive sensing, and three configurable serial communication blocks (I²C/SPI/UART). It operates from 1.71 V to 5.5 V and supports Deep-Sleep mode with 2.5 µA digital current - deployed in industrial HMI touch panels requiring robust water-tolerant sensing and mixed-signal control.

For engineers reviewing the CY8C4145PVI-PS431 datasheet, CY8C4145PVI-PS431 pinout, CY8C4145PVI-PS431 application, or CY8C4145PVI-PS431 equivalent, this device delivers verified reconfigurable analog/digital peripherals, SmartSense™ auto-tuning for CAPSENSE™, and runtime-configurable TCPWM blocks - critical for rapid prototyping of embedded human-machine interfaces with integrated AFE and LCD drive capability.

Technical Context

The CY8C4145PVI-PS431 implements a 48 MHz Arm® Cortex®-M0+ core with descriptor-based 8-channel DMA and flash read accelerator. Its analog subsystem includes two CTB opamps, two 13-bit VDACs, two 7-bit IDACs, and a 38-channel analog mux - enabling custom AFE construction without external components.

Digital resources comprise three SCBs (each independently configurable as I²C, SPI, or UART), eight 16-bit TCPWM blocks supporting center-aligned PWM and pseudo-random modulation, and eight Smart I/O pins capable of Boolean logic at the pin level - all routed automatically via PSoC™ Creator's hardware abstraction layer.

Key Specifications

Pinout & Package

This device is packaged in a 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully configurable via PSoC™ Creator; no fixed hardware-defined roles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable mixed-signal microcontroller applications.

Compared with CY8C4145PVI-PS431, CY8C4146PVI-PS433 offers headroom for future firmware expansion without hardware redesign, while STM32G071KBT6 shifts analog/touch complexity to external circuitry - increasing PCB area and validation effort but lowering unit cost in high-volume production.

Availability

CY8C4145PVI-PS431 is available at Aetrix Electronics and suitable for industrial HMI touch panels, capacitive keypad controllers, and programmable sensor nodes requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for CY8C4145PVI-PS431 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 German semiconductor manufacturer specializing in power management, automotive MCUs, and secure connectivity solutions - with over 30 years of industrial-grade reliability certification.

The PSoC™ 4100PS product line targets embedded human-machine interfaces requiring integrated analog front ends, robust capacitive sensing, and flexible digital peripherals - designed to replace discrete MCU + analog + touch controller combinations in space-constrained applications.

FAQ

Does CY8C4145PVI-PS431 support USB device functionality?

No. This device lacks a USB PHY and dedicated USB controller. Communication is limited to UART, I²C, and SPI via its three SCB modules. For USB connectivity, designers must add an external USB-to-UART bridge IC such as CP2102N or integrate a PSoC™ 4000S-series part with built-in USBFS.

What development tools are required to program CY8C4145PVI-PS431?

PSoC™ Creator IDE (v4.4 or later) is mandatory for hardware configuration and component-based firmware generation. Programming and debugging require MiniProg3 or KitProg2/3 debug probes. ARM GCC toolchain is embedded in Creator; standalone Arm®-SWD tools like OpenOCD are unsupported for full peripheral initialization.

Can the 12-bit SAR ADC and 10-bit single-slope ADC operate simultaneously?

Yes. Both ADCs are independent and share no clock or reference resources. The SAR ADC uses IMO or external clock up to 18 MHz; the single-slope ADC uses ILO-derived clock. Simultaneous sampling is supported in PSoC™ Creator via separate component instances and DMA-triggered conversions.

Is the WCO (Watch Crystal Oscillator) integrated or external?

The WCO is an internal oscillator block that requires connection to an external 32.768 kHz crystal between XIN32 and XOUT32 pins. It provides precise timing for RTC and Deep-Sleep wake-up intervals, with typical accuracy of ±20 ppm over –40°C to +85°C when paired with a standard load-capacitance crystal.