Infineon Technologies CY8C5467AXI-011

Overview

CY8C5467AXI-011 from Infineon Technologies (acquired Cypress Semiconductor) is a programmable system-on-chip (PSoC® 5) integrating a 32-bit ARM Cortex-M3 CPU, dual 12-bit SAR ADCs (700 ksps), four 8-bit DACs (5.5 Msps), four opamps, four comparators, and 24 universal digital blocks (UDBs) in a 100-pin TQFP package. It operates from 2.7 V to 5.5 V, supports CapSense® capacitive sensing on any GPIO, and targets embedded control with mixed-signal acquisition and real-time processing.

For engineers reviewing the CY8C5467AXI-011 datasheet, CY8C5467AXI-011 pinout, CY8C5467AXI-011 application, or CY8C5467AXI-011 equivalent, key selection criteria include its 67 MHz Cortex-M3 performance, configurable analog routing across 60 GPIOs, USB 2.0 FS interface, DFB-based FIR/IIR filtering, and industrial temperature range (–40 °C to +85 °C).

Technical Context

The device implements a hierarchical mixed-signal architecture: analog signals route via dedicated analog interconnect to two independent 12-bit SAR ADCs and four SC/CT blocks (configurable as PGA, TIA, mixer, or sample-and-hold), while digital logic executes in 24 UDBs-each containing PAL/PLD and state machine resources-connected through the Digital System Interconnect (DSI) to all I/O pins.

Clocking is managed by multiple sources: a 3–48 MHz IMO, 4–25 MHz crystal oscillator, 32.768 kHz RTC oscillator, and internal PLL enabling up to 67 MHz core operation; power management includes 2 µA sleep and 300 nA hibernate modes with SRAM retention, supporting ultra-low-power sensor node designs.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), 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 mixed-signal SoC applications.

Compared with STM32F303VCT6 and PSoC™ 62S2-064DXI-T, CY8C5467AXI-011 uniquely combines high-resolution dual ADCs, hardware DFB filtering, and fully configurable analog blocks - making it optimal for applications demanding on-chip analog signal conditioning and real-time mixed-signal processing without external components.

Availability

CY8C5467AXI-011 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart home touch panels, and automotive body control modules requiring stable component supply and long-term lifecycle support.

Supply support for CY8C5467AXI-011 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 configurable mixed-signal SoCs, emphasizing analog-digital integration and rapid prototyping.

CY8C5467AXI-011 belongs to the PSoC® 5 family, designed for embedded systems requiring concurrent high-precision analog acquisition, real-time digital signal processing, and flexible firmware-defined peripherals - especially where BOM reduction and design iteration speed are critical.

FAQ

Does CY8C5467AXI-011 support USB device enumeration without external crystal?

No. Full-Speed USB 2.0 operation requires an external 24 MHz crystal connected to XIN/XOUT pins. The internal IMO does not meet USB timing accuracy requirements (±0.25% tolerance). Crystal-less USB is not supported in this device.

Can all 60 GPIOs be used simultaneously for CapSense®?

No. While CapSense® can be routed to any GPIO, the maximum number of simultaneous CapSense® sensors is limited by the analog routing resources and scan time constraints. The datasheet specifies up to 62 total analog inputs, but practical CapSense® channel count depends on shield configuration, resolution, and scan rate - typically ≤32 for robust operation.

What is the maximum update rate for the 8-bit IDACs in voltage-output mode?

In voltage-output (VDAC) mode, the four 8-bit DACs operate at up to 1 Msps. This is confirmed in Section 11.5 (Analog Peripherals) of the datasheet, where VDAC settling time is specified as 1 µs typical - limiting usable update rate to 1 million samples per second under load conditions.

Is the DFB capable of implementing a 2nd-order IIR filter in real time?

Yes. The DFB supports 24-bit fixed-point arithmetic and performs one 48-bit MAC operation per clock cycle. A 2nd-order IIR filter requires three MAC operations per sample; at 67 MHz core clock with DFB clocked at 67 MHz, it achieves real-time execution well below 100 kS/s - verified in Cypress Application Note AN76359.