Infineon Technologies CY8C5667LTI-LP041

Overview

CY8C5667LTI-LP041 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 programmable system-on-chip (PSoC® 5LP) integrating configurable analog/digital peripherals, 256 KB flash, 64 KB RAM, full CAN 2.0b interface, and USB 2.0 Full-Speed capability. It operates from 1.71–5.5 V across –40 to 85 °C, supports ultra-low-power modes (300 nA hibernate), and targets embedded control in industrial automation, medical sensors, and automotive body electronics.

For engineers reviewing the CY8C5667LTI-LP041 datasheet, CY8C5667LTI-LP041 pinout, CY8C5667LTI-LP041 application, or CY8C5667LTI-LP041 equivalent, key selection criteria include its dual ADC architecture (delta-sigma + SAR), CapSense® support for up to 62 sensors, 24-channel DMA, DFB digital filter processor, and flexible I/O routing to any peripheral - all critical for mixed-signal IoT edge nodes requiring firmware-defined signal chains.

Technical Context

The CY8C5667LTI-LP041 implements a tightly coupled mixed-signal SoC architecture where the Arm Cortex-M3 core (up to 80 MHz) orchestrates programmable analog blocks (PGA, TIA, SAR/ΔΣ ADCs), digital UDB arrays (20–24 blocks), and dedicated peripherals including full CAN 2.0b with 16 Rx/8 Tx buffers and USB 2.0 FS using internal oscillator. Its clocking subsystem includes PLL, multiple crystal/RC oscillators, and 12 routable dividers.

Power management integrates a boost regulator (0.5–5 V), six independent power domains, and three low-power states (sleep at 2 µA, hibernate at 300 nA with RAM retention). Analog routing supports simultaneous sensor front-end conditioning and LCD direct drive (46×16 segments), while digital interconnect uses DSI to route any peripheral function to any GPIO without fixed pin constraints.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, JEDEC-standard footprint.

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, CY8C5667LTI-LP041 uniquely combines full CAN/USB, hardware-programmable analog/digital blocks, and sub-µA hibernate - making it optimal for cost-sensitive, feature-rich embedded nodes where firmware-defined peripherals replace discrete ICs.

Availability

CY8C5667LTI-LP041 is available at Aetrix Electronics and suitable for industrial motor control, portable medical monitoring, and automotive body electronics requiring stable component supply, long-term lifecycle support, and qualified automotive-grade temperature range (–40 to 85 °C).

Supply support for CY8C5667LTI-LP041 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, specializing in power management, automotive microcontrollers, and security solutions.

This device belongs to the PSoC® 5LP family - designed specifically for highly integrated, low-power embedded systems where analog signal conditioning, digital protocol handling, and firmware-defined peripherals must coexist on a single die without external glue logic.

FAQ

Does CY8C5667LTI-LP041 support USB device enumeration without an external crystal?

Yes. The part integrates an internal oscillator qualified for USB 2.0 Full-Speed (12 Mbps) operation, certified under TID#10840032. This eliminates the need for an external 48 MHz crystal in USB peripheral designs, reducing BOM cost and board space while maintaining USB compliance.

What is the maximum number of CapSense® electrodes supported on this device?

CY8C5667LTI-LP041 supports up to 62 self- or mutual-capacitance sensors using its dedicated CapSense® subsystem. Electrode count is constrained only by available GPIOs and scan time requirements; all pins except power/ground and dedicated crystal pins are CapSense®-capable.

Can the DFB (Digital Filter Block) operate independently of the CPU core?

Yes. The DFB is a fully autonomous 24-bit, 64-tap fixed-point processor with its own instruction memory and data RAM. It runs filter algorithms (FIR/IIR) triggered by DMA or timer events without CPU intervention, enabling continuous real-time signal processing during low-power sleep modes.

Is the CAN controller compliant with ISO 11898-1:2015 physical layer requirements?

No - the CY8C5667LTI-LP041 contains a CAN 2.0b protocol controller only. It requires an external CAN transceiver (e.g., TJA1042, SN65HVD230) to meet ISO 11898-1 physical layer specifications. The controller handles message arbitration, error checking, and buffering, but not differential signaling.