Infineon Technologies CY8C5368LTI-026

Overview

CY8C5368LTI-026 from Infineon Technologies (acquired Cypress Semiconductor) is a programmable system-on-chip (PSoC® 5) integrating a 32-bit ARM Cortex-M3 CPU core, 256 KB flash, 64 KB SRAM, 2-KB EEPROM, 12-bit SAR ADC (700 ksps), and dual 8-bit DACs (5.5 Msps). It features 60 GPIOs with full analog/digital routing, CapSense® support, USB 2.0 Full-Speed interface, and operates from 2.7 V to 5.5 V across –40°C to +85°C. Used in embedded human-interface and sensor-fusion systems requiring mixed-signal reconfigurability.

For engineers reviewing the CY8C5368LTI-026 datasheet, CY8C5368LTI-026 pinout, CY8C5368LTI-026 application, or CY8C5368LTI-026 equivalent, key selection criteria include its configurable UDB array for custom digital logic, on-chip analog subsystem with PGA/TIA/SC-CT blocks, low-power sleep modes (2 µA), and SWD debug support - all critical for rapid prototyping and BOM consolidation in industrial HMI and portable medical devices.

Technical Context

The CY8C5368LTI-026 implements a hierarchical architecture centered on the ARM Cortex-M3 core running at up to 67 MHz, backed by 128 bytes of cache and a PHUB-based DMA controller supporting 24 channels with chained descriptors. Its digital subsystem relies on 24 universal digital blocks (UDBs) - each combining PLD logic and state machines - enabling synthesis of UART, SPI, I²C, LIN, PRS, CRC, and quadrature decoders via PSoC Creator™.

Analog functionality is anchored by a 1.024 V ±1% internal reference, a 12-bit SAR ADC with 700 ksps throughput and <±1 LSB INL, two independent 8-bit DACs (configurable as IDAC or VDAC), four comparators (95 ns response), two rail-to-rail opamps (10 mA drive), and two multifunction SC/CT blocks supporting PGA, TIA, mixer, and sample-and-hold topologies - all routable to any GPIO.

Key Specifications

Pinout & Package

Package: 68-pin QFN (9 mm × 9 mm, 0.5 mm pitch), RoHS-compliant, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C5368LTI-026, CY8C5868LTI-LP026 offers scalability for future feature growth but at higher unit cost and power, while STM32F303VCT6 demands external components for CapSense and USB - making CY8C5368LTI-026 optimal for cost-sensitive, rapidly developed mixed-signal products with tight PCB area constraints.

Availability

CY8C5368LTI-026 is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical sensor hubs, smart home environmental nodes, and automated test equipment front-ends requiring stable component supply, long-lifecycle availability, and consistent parametric performance across manufacturing lots.

Supply support for CY8C5368LTI-026 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® family. Cypress pioneered programmable analog/digital SoCs for embedded systems requiring high integration and rapid customization.

The CY8C53 family targets applications demanding concurrent high-precision analog acquisition, flexible digital logic synthesis, and USB connectivity - designed specifically to replace multi-chip solutions in human-interface, sensor-fusion, and portable instrumentation systems.

FAQ

What development tools are required to program and debug the CY8C5368LTI-026?

PSoC Creator™ IDE (now legacy, supported through Infineon's ModusToolbox™ migration path) is required for schematic-based design, component configuration, and code generation. Programming and debugging use standard ARM SWD via MiniProg3 or KitProg2 programmers. No external JTAG adapter is needed - SWDCK/SWDIO pins provide full flash programming, breakpoint, and real-time variable watch capabilities.

Does the CY8C5368LTI-026 support true hardware-based CapSense® without external components?

Yes. The device integrates a dedicated CapSense® Sigma-Delta (CSD) block with programmable IDACs, shield drivers, and scanning logic. All capacitive sensing - including self-capacitance (buttons/sliders) and mutual-capacitance (touchpad/gestures) - runs entirely on-chip. Only a single 0.1 µF decoupling capacitor per VDD pin is required; no external RC networks or dedicated sense pins are necessary.

Can the dual 8-bit DACs operate simultaneously with independent update rates and output types?

Yes. Each DAC is independently configurable as either current-output (IDAC, 5.5 Msps) or voltage-output (VDAC, 1 Msps), with programmable range (0–VREF or 0–2×VREF). Both DACs can be updated synchronously via DMA or asynchronously via CPU writes, and their outputs can be routed to separate GPIOs - enabling simultaneous analog stimulus generation and bias control in closed-loop systems.

Is the 68-pin QFN package of CY8C5368LTI-026 compatible with standard reflow profiles and automated optical inspection (AOI)?

Yes. The 9 mm × 9 mm, 0.5 mm pitch QFN package complies with IPC/JEDEC J-STD-020D moisture sensitivity level 3 and supports standard lead-free reflow profiles (peak 260°C). Its exposed thermal pad and defined solder mask openings enable reliable AOI detection of solder joint integrity and voiding - validated in Infineon's assembly guidelines for high-yield SMT production.