Infineon Technologies CY8C5367LTI-003

Overview

CY8C5367LTI-003 from Infineon Technologies (acquired Cypress Semiconductor) is a 32-bit programmable system-on-chip (PSoC® 5) integrating ARM Cortex-M3 MCU, configurable analog/digital peripherals, 256 KB Flash, 64 KB SRAM, and USB 2.0 interface in a 68-pin QFN package. It delivers 12-bit SAR ADC at 700 ksps, dual 8-bit DACs up to 5.5 Msps, four comparators with 95-ns response, and supports CapSense® on GPIOs for touch interface design in industrial HMI systems.

For engineers reviewing the CY8C5367LTI-003 datasheet, CY8C5367LTI-003 pinout, CY8C5367LTI-003 application, or CY8C5367LTI-003 equivalent, key selection criteria include its 67 MHz CPU clock, 2.7–5.5 V operating range, 2-µA sleep mode, 24-channel DMA, and full-speed USB 2.0 capability with external 24 MHz crystal - critical for embedded control with mixed-signal acquisition and firmware-upgradable I/O routing.

Technical Context

The device implements a hierarchical architecture centered on an ARM Cortex-M3 core with tightly coupled NVIC, cache, and PHUB-based DMA controller enabling zero-CPU-load peripheral data transfers. Its digital subsystem uses 24 universal digital blocks (UDBs) with PLD+state machine logic, routed via Digital System Interconnect (DSI) to any GPIO, supporting reconfigurable peripherals including UART, SPI, I²C, LIN, PRS, and CRC.

Analog functionality is built around a 1.024 V ±1% internal reference, enabling high-accuracy signal conditioning: SAR ADC with <±1 LSB INL/DNL, two opamps (10 mA drive), four fast comparators, and two SC/CT blocks configurable as PGA, TIA, or mixer - all accessible through a shared analog bus connected to up to 62 GPIO pins.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303VCT6 and MAX32660, CY8C5367LTI-003 uniquely combines reconfigurable analog/digital hardware, integrated USB PHY, and CapSense® - enabling true single-chip mixed-signal system consolidation where firmware-driven I/O remapping and analog front-end reuse are design requirements.

Availability

CY8C5367LTI-003 is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical sensor hubs, and automated test equipment modules requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature and voltage ranges.

Supply support for CY8C5367LTI-003 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, inheriting its PSoC® portfolio - a leader in configurable mixed-signal SoCs with >20 years of automotive-qualified reliability and broad industrial adoption.

The CY8C53 family targets applications demanding hardware/software co-design flexibility - especially where analog signal chain consolidation, touch interface integration, and USB connectivity must be achieved in a single chip without compromising power or precision.

FAQ

Does CY8C5367LTI-003 support USB device enumeration without external crystal?

No. Full-Speed USB 2.0 compliance requires a 24 MHz ±0.25% external crystal connected to XTAL_IN/XTAL_OUT. The internal IMO cannot meet USB timing tolerance requirements. This is explicitly specified in Section 11.9 (Clocking) of datasheet 001-66237 Rev. *D.

Can all 60 GPIOs simultaneously serve as analog inputs for the SAR ADC?

No. While all GPIOs connect to the analog bus, the SAR ADC has only one sample-and-hold channel and supports sequential sampling across up to 62 pins - not simultaneous acquisition. Maximum throughput remains 700 ksps total, shared across configured channels per scan sequence.

What is the maximum drive strength of the opamps in CY8C5367LTI-003?

Each of the two uncommitted opamps delivers ±10 mA continuous output current into resistive loads, with rail-to-rail output swing and unity-gain stability - verified in Section 11.5 (Analog Peripherals) of the datasheet under "Opamp Output Drive Capability" test conditions.

Is the 2-KB EEPROM truly byte-erasable and independently writable from Flash?

Yes. The 2 KB EEPROM is organized as 2048 bytes, each individually erasable and programmable without affecting adjacent bytes. It supports 1 million write/erase cycles and 20-year data retention at 85°C - confirmed in Section 5.4 (EEPROM) and Table 11-13 of the datasheet.