Infineon Technologies CY8C5468AXI-LP042

Overview

CY8C5468AXI-LP042 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 programmable system-on-chip (PSoC® 5LP) with up to 80 MHz operation, 256 KB flash, 64 KB RAM, and configurable analog/digital peripherals. It integrates USB 2.0 Full-Speed interface, dual ADCs (delta-sigma and SAR), two DACs, four comparators, two opamps, and CapSense® support for up to 62 sensors - deployed in industrial HMI, medical sensor hubs, and low-power IoT edge nodes.

For engineers reviewing the CY8C5468AXI-LP042 datasheet, CY8C5468AXI-LP042 pinout, CY8C5468AXI-LP042 application, or CY8C5468AXI-LP042 equivalent, key selection criteria include its 1.71–5.5 V wide supply range, 300-nA hibernate mode with RAM retention, 24-channel DMA, flexible UDB-based peripheral synthesis, and routing of any analog/digital function to any GPIO.

Technical Context

The CY8C5468AXI-LP042 implements a tightly integrated mixed-signal SoC architecture centered on an Arm Cortex-M3 core, supported by a programmable digital subsystem built around 24 Universal Digital Blocks (UDBs). Each UDB combines PAL/PLD logic with a state machine engine, enabling synthesis of UART, SPI, LIN, CRC, PRS, quadrature decoders, and custom gate-level logic.

Analog functionality is delivered via dedicated blocks including a 12-bit SAR ADC, 8–12-bit delta-sigma ADC, two 8-bit DACs, four comparators, two opamps, and two programmable SC/CT blocks supporting PGA, TIA, mixer, and sample-and-hold configurations - all routable through a dedicated analog interconnect with 1.024 V ±1% internal reference.

Key Specifications

Pinout & Package

Package: 68-pin QFN (10 mm × 10 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad - suitable for compact industrial and portable designs requiring efficient heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C5468AXI-LP042, the CY8C5868AXI-LP035 offers headroom for firmware growth without changing PCB layout, while the STM32F412ZGT6 trades integrated mixed-signal capability for raw CPU throughput - making the CY8C5468AXI-LP042 optimal for sensor-rich, space-constrained embedded systems where analog integration reduces total system cost.

Availability

CY8C5468AXI-LP042 is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical sensor hubs, and smart home energy monitors requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.

Supply support for CY8C5468AXI-LP042 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 systems, microcontrollers, sensors, and security solutions for industrial, automotive, and IoT markets.

This device belongs to the PSoC® 5LP product line - designed specifically to unify analog signal conditioning, digital logic synthesis, and Arm-based control in a single reconfigurable chip for rapid prototyping and production-ready embedded systems.

FAQ

Does CY8C5468AXI-LP042 support USB device enumeration without an external crystal?

Yes. The device integrates a USB 2.0 Full-Speed PHY with internal oscillator support certified to TID#10840032. It achieves ±0.25% frequency accuracy required for USB signaling using its 48 MHz internal clock path - eliminating the need for an external 48 MHz crystal and associated passive components in most host-compliant applications.

What is the maximum number of CapSense® electrodes supported, and how is noise immunity achieved?

CY8C5468AXI-LP042 supports up to 62 self- or mutual-capacitance electrodes. Noise immunity is achieved through spread-spectrum dithering, shield-driven guard traces, automatic baseline tracking, and hardware-accelerated correlation filtering - enabling reliable operation in noisy industrial environments with >60 Vpp common-mode noise.

Can the SAR and delta-sigma ADCs operate simultaneously, and what are their respective sampling rates?

Yes. Both ADCs operate independently and concurrently. The 12-bit SAR ADC achieves up to 1 MSPS with programmable averaging; the delta-sigma ADC delivers up to 16-bit effective resolution at 125 kSPS (with sinc3 filter) or 250 kSPS (with sinc1), both with integrated PGA gain up to 32× - enabling synchronized multi-channel sensor acquisition.

Is the 24-channel DMA controller capable of servicing both analog and digital peripherals without CPU intervention?

Yes. The PHUB-based DMA controller supports concurrent transfers between flash/RAM/peripherals including ADC result registers, DAC data buffers, TCPWM counters, and USB endpoint FIFOs. Each channel features configurable burst size, address increment, and descriptor chaining - enabling fully autonomous sensor data streaming and waveform generation.