Infineon Technologies CY8C5366LTI-053

Overview

CY8C5366LTI-053 from Infineon (acquired Cypress Semiconductor) is a 32-bit programmable system-on-chip (PSoC® 5) integrating ARM Cortex-M3 CPU, 256 KB flash, 64 KB SRAM, 12-bit SAR ADC (700 ksps), dual 8-bit DACs (5.5 Msps), and 24 UDB-based digital peripherals. It operates from 2.7 V to 5.5 V, supports CapSense® on GPIO, and delivers ultra-low-power hibernate mode (300 nA with RAM retention). Used in industrial HMI, medical sensor hubs, and programmable analog front-ends requiring mixed-signal reconfigurability.

For engineers reviewing the CY8C5366LTI-053 datasheet, CY8C5366LTI-053 pinout, CY8C5366LTI-053 application, or CY8C5366LTI-053 equivalent, key selection criteria include its 67 MHz Cortex-M3 performance, full-speed USB 2.0 interface, configurable analog blocks (PGA/TIA/mixer), 46 GPIO with analog routing, and support for PSoC Creator™ schematic-based firmware-defined peripherals.

Technical Context

The CY8C5366LTI-053 implements a hierarchical mixed-signal architecture with independent analog and digital subsystems routed via dedicated interconnect buses. Its ARM Cortex-M3 core executes at up to 67 MHz with 128-byte cache and supports SWD/SWV debug, while the 24 universal digital blocks (UDBs) enable hardware-level logic synthesis of timers, PWMs, CRC, LIN, and PRS without CPU overhead.

Analog resources include two uncommitted opamps (10 mA drive), four comparators (95 ns response), programmable SC/CT blocks for PGA/TIA/mixer configurations, and a 1.024 V ±1% internal reference enabling high-accuracy signal conditioning across –40°C to +85°C. All 46 GPIOs support analog input/output routing and CapSense® electrode drive.

Key Specifications

Pinout & Package

Package: 68-pin QFN (10 mm × 10 mm, 0.5 mm pitch), thermally enhanced with exposed pad. RoHS-compliant, industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303VCT6 and MAX32660, CY8C5366LTI-053 uniquely combines reconfigurable analog hardware, full-speed USB, and CapSense® in one die - reducing component count and enabling firmware-driven adaptation of signal paths post-production.

Availability

CY8C5366LTI-053 is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical sensor hubs, programmable sensor transmitters, and USB-capable test instrumentation requiring stable component supply and long-term lifecycle assurance.

Supply support for CY8C5366LTI-053 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 owns the PSoC® portfolio. Cypress pioneered programmable analog-digital SoCs, emphasizing flexibility, integration, and rapid prototyping for embedded systems.

The CY8C53 family targets applications demanding hardware-reconfigurable signal chains - especially industrial control, medical diagnostics, and human-machine interfaces where analog sensor diversity and firmware adaptability are critical.

FAQ

Does CY8C5366LTI-053 support USB device enumeration without external components?

Yes. The part integrates a full-speed USB 2.0 PHY with internal termination and slew-rate control. Only a 1.5 kΩ pull-up resistor on USB_DP is required for device enumeration. No external transceiver, level shifter, or ESD protection diode is needed for basic USB connectivity.

Can all 46 GPIO pins be used simultaneously for analog input acquisition?

No. While all 46 GPIOs support analog routing, the SAR ADC has a single sample-and-hold circuit and multiplexed input channel. Up to 62 analog signals can be routed to the ADC input via internal analog muxes, but only one channel is sampled at a time. Simultaneous sampling requires external parallel ADCs.

What is the maximum achievable resolution for DAC output using UDB-based PWM techniques?

Using the UDB array to implement delta-sigma or PWM-based DACs, up to 10-bit effective resolution is achievable at update rates up to 48 kHz. This is derived from 16-bit counter-based PWM with dithering and digital filtering - confirmed in Cypress Application Note AN76315.

Is the 300 nA hibernate mode verified across the full industrial temperature range?

Yes. The 300 nA hibernate current (with SRAM retention) is specified and tested over –40°C to +85°C per datasheet Section 11.2. It requires VBACKUP ≥ 1.3 V and disables all clocks except the 32.768 kHz RTC oscillator, preserving register state and 64 KB SRAM contents.