Infineon Technologies CY8C5468AXI-018

Overview

CY8C5468AXI-018 from Infineon Technologies (acquired Cypress Semiconductor) is a programmable system-on-chip (PSoC® 5) integrating a 32-bit ARM Cortex-M3 CPU, dual 12-bit SAR ADCs (700 ksps), four 8-bit DACs (5.5 Msps), 24 UDBs, and full-speed USB 2.0. It operates from 2.7 V to 5.5 V, supports CapSense® on GPIO, and delivers up to 67 MHz performance in industrial temperature range (–40 °C to +85 °C) for embedded control and signal acquisition.

For engineers reviewing the CY8C5468AXI-018 datasheet, CY8C5468AXI-018 pinout, CY8C5468AXI-018 application, or CY8C5468AXI-018 equivalent, key selection criteria include its configurable analog/digital subsystems, 60 GPIOs with per-pin routing flexibility, integrated DFB for FIR/IIR filtering, low-power hibernate mode (300 nA), and USB/I²C/SPI peripheral availability - all critical for mixed-signal IoT edge nodes and human interface systems.

Technical Context

The device implements a hierarchical architecture with tightly coupled ARM Cortex-M3 core, programmable digital logic via 24 universal digital blocks (UDBs), and a reconfigurable analog subsystem including SAR ADCs, opamps, comparators, SC/CT blocks (PGA/TIA/mixer), and DACs. All analog and digital resources connect through dedicated interconnect buses (DSI/ASI) routed to any of 60 GPIOs.

Its clocking system combines multiple oscillators - IMO (3–48 MHz), crystal oscillator (4–25 MHz), PLL (up to 67 MHz), and ILO (1/33/100 kHz) - enabling precise timing control across power modes. The 24-channel DMA with chained descriptors allows autonomous data movement between peripherals (e.g., ADC → DFB → memory) without CPU intervention.

Key Specifications

Pinout & Package

This device is packaged in a 68-pin QFN (9 mm × 9 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the CY8C54 family datasheet Rev. *D, Section 2 (Pinouts) and Section 3 (Pin Descriptions).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303VCT6 and MAX32660, CY8C5468AXI-018 uniquely combines USB PHY, CapSense®, dual high-speed ADCs, and DFB in one die - reducing component count and PCB area for applications requiring both rich analog sensing and direct USB connectivity.

Availability

CY8C5468AXI-018 is available at Aetrix Electronics and suitable for industrial sensor hubs, medical wearable monitors, smart home touch panels, and USB human interface devices requiring stable component supply and long-term lifecycle support.

Supply support for CY8C5468AXI-018 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 acquired Cypress Semiconductor in 2020 and now manufactures and supports the PSoC® portfolio, delivering high-reliability semiconductor solutions for automotive, industrial, and IoT markets.

The CY8C54 family belongs to Infineon's PSoC® 5 programmable SoC product line, designed specifically to unify analog signal acquisition, digital processing, and system control in a single configurable chip - targeting applications demanding rapid prototyping, late-stage firmware-driven feature changes, and BOM consolidation.

FAQ

What development tools are required to program and debug CY8C5468AXI-018?

CY8C5468AXI-018 is programmed and debugged using PSoC Creator™ IDE (discontinued but supported) or ModusToolbox™ with PSoC 5LP BSP. Hardware debugging requires a KitProg2/3 or MiniProg3 programmer supporting SWD. No external debugger is needed - SWDIO/SWCLK pins provide full flash programming, breakpoints, and real-time trace via Serial Wire Viewer (SWV).

Does CY8C5468AXI-018 support USB device enumeration without external components?

Yes - CY8C5468AXI-018 integrates a full-speed USB 2.0 PHY with internal transceivers and voltage regulators. Only a 24 MHz crystal, two 27 Ω series resistors on DP/DM lines, and ESD protection diodes are required for USB compliance. No external USB transceiver or level shifter is needed.

Can all 60 GPIOs be used simultaneously for analog input with the SAR ADCs?

No - while all 60 GPIOs are routable to the analog subsystem, the dual SAR ADCs share a single analog mux tree with 62 total analog input channels. Simultaneous sampling is limited to one ADC at a time; however, interleaved sampling across multiple GPIOs is supported via DMA-triggered sequencing with sub-microsecond channel switching.

Is the 300 nA hibernate mode achievable with all peripherals disabled and RAM retained?

Yes - hibernate mode retains full 64 KB SRAM content while drawing 300 nA typical (per datasheet Section 11.2). This requires disabling all clocks, powering down analog references, and configuring only the hibernate wakeup source (e.g., pin interrupt or RTC alarm). External circuitry must not load GPIOs during hibernate.