Infineon Technologies CY8C5667AXI-LP006

Overview

CY8C5667AXI-LP006 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 programmable system-on-chip (PSoC® 5LP) with up to 256 KB flash, 64 KB RAM, 48–72 I/O pins, full CAN 2.0b interface, and integrated analog peripherals including dual 12-bit SAR ADCs, four opamps, and CapSense® support - deployed in industrial HMI, medical sensor hubs, and low-power IoT edge nodes.

For engineers reviewing the CY8C5667AXI-LP006 datasheet, CY8C5667AXI-LP006 pinout, CY8C5667AXI-LP006 application, or CY8C5667AXI-LP006 equivalent, key selection criteria include its 80-MHz CPU clock, 1.71–5.5 V operating range, 300-nA hibernate mode with RAM retention, USB 2.0 Full-Speed capability, and configurable UDB-based digital logic synthesis.

Technical Context

The CY8C5667AXI-LP006 implements a tightly coupled mixed-signal architecture where the Arm Cortex-M3 core interfaces directly with a programmable digital subsystem (20–24 Universal Digital Blocks), analog routing matrix, and flexible I/O routing fabric. Its DSI (Digital System Interconnect) enables dynamic signal path reconfiguration between peripherals and pins without hardware changes.

It integrates dedicated hardware blocks including four 16-bit TCPWM units, full CAN 2.0b controller with 16 Rx/8 Tx buffers, USB 2.0 FS PHY with internal oscillator support, and a 24-channel DMA controller - all synchronized via a multi-source clocking system with PLL, internal oscillators (1–74 MHz), and 12 programmable dividers.

Key Specifications

Pinout & Package

Package: 68-pin QFN (10 mm × 10 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad - suitable for compact industrial PCBs requiring high I/O density and thermal reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C5667AXI-LP006, the CY8C5868AXI-LP035 offers scalable memory headroom without architectural change, while the STM32F412ZGT6 trades PSoC's analog/digital configurability for higher CPU performance and larger flash - making it less optimal for sensor fusion or touch-integrated designs.

Availability

CY8C5667AXI-LP006 is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical monitors, automotive diagnostic tools, and smart energy meters requiring stable component supply, long-term lifecycle support, and qualified mixed-signal integration.

Supply support for CY8C5667AXI-LP006 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 AG is a global semiconductor leader headquartered in Munich, Germany, specializing in power systems, automotive ICs, and embedded security solutions.

This device belongs to the PSoC® 5LP family - designed specifically for highly integrated, low-power embedded control applications requiring concurrent analog signal processing, digital logic customization, and real-time communication across industrial, medical, and automotive domains.

FAQ

Does CY8C5667AXI-LP006 support USB device enumeration without external crystal?

Yes. The device includes an internal 48-MHz oscillator with ±2% accuracy, certified for USB 2.0 Full-Speed (12 Mbps) device operation per TID#10840032. This eliminates the need for an external 48-MHz crystal in most HID, CDC, and MSC applications, reducing BOM count and layout complexity.

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

CY8C5667AXI-LP006 supports up to 62 self-capacitive or mutual-capacitive electrodes using its dedicated CapSense® CSD and CSX hardware blocks. Electrode count is limited only by available GPIOs and scan time requirements - all electrodes share the same analog subsystem resources without external components.

Can the internal boost regulator power external circuitry?

No. The internal boost regulator (0.5 V to 5 V output) is strictly for internal use - powering the analog subsystem and USB PHY. It cannot source current to external loads. External circuitry must be powered separately, though the device supports multiple I/O voltage domains (1.2–5.5 V) for level-shifting interoperability.

Is SWD debugging supported in hibernate mode?

No. Debug interfaces (SWD, JTAG, SWV) are disabled in hibernate mode to achieve 300-nA quiescent current. Debugging requires wake-up to sleep or active mode. However, the device retains full RAM contents and register states during hibernate, enabling seamless resume after debug session restart.