Infineon Technologies CY8C4147AXI-S455

Overview

CY8C4147AXI-S455 from Infineon Technologies (acquired Cypress Semiconductor) is a 32-bit Arm Cortex-M0+ programmable system-on-chip (PSoC) with 128 KB flash, 16 KB SRAM, integrated CapSense® capacitive sensing, CAN 2.0B interface, and 54 GPIOs in 64-pin TQFP package. It delivers 48 MHz operation, Deep Sleep current as low as 2.5 µA, and supports motor control via TCPWM kill signals and secure key generation via TRNG.

For engineers reviewing the CY8C4147AXI-S455 datasheet, CY8C4147AXI-S455 pinout, CY8C4147AXI-S455 application, or CY8C4147AXI-S455 equivalent, key selection criteria include its integrated CapSense sigma-delta architecture (SNR >5:1), CAN 2.0B + TTCAN support, reconfigurable analog blocks (2 opamps, 12-bit SAR ADC), and PSoC Creator–enabled hardware/firmware co-design capability.

Technical Context

The device integrates a single-core Arm Cortex-M0+ CPU with nested vectored interrupt controller (NVIC), 8-channel DMA, and serial-wire debug (SWD) interface featuring four breakpoint and two watchpoint comparators. Its clock system combines IMO (±2%), ILO (32 kHz), WCO, ECO (4–33 MHz), and PLL to generate stable 48 MHz HFCLK with glitch-free switching.

Analog subsystem includes two rail-to-rail opamps operable in Deep Sleep mode, a 12-bit 1-Msps SAR ADC with channel sequencer and signal averaging, two IDACs, and two low-power comparators - all accessible through programmable routing to any GPIO. Digital resources comprise five reconfigurable SCBs (I²C/SPI/UART), eight 16-bit TCPWM blocks with quadrature decode and comparator-triggered kill signals, and programmable logic for Boolean operations on port I/O.

Key Specifications

Pinout & Package

Package: 64-pin TQFP (0.5 mm pitch), 10 × 10 mm body, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G071KB and RP2040, CY8C4147AXI-S455 uniquely integrates CapSense, CAN 2.0B, Deep Sleep–capable analog, and hardware TRNG in one die - enabling single-chip solutions for touch-enabled industrial gateways and secure medical edge nodes where mixed-signal integration and functional safety margins matter.

Availability

CY8C4147AXI-S455 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, smart home hubs, and portable medical sensor nodes requiring stable component supply, long-term lifecycle assurance, and qualified traceable sourcing.

Supply support for CY8C4147AXI-S455 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 develops, manufactures, and supports the PSoC family. Infineon is a global semiconductor leader focused on power systems, automotive, and industrial applications.

This device belongs to the PSoC 4100S Plus product line, designed specifically for ultra-low-power, mixed-signal embedded systems requiring integrated capacitive sensing, CAN connectivity, and hardware-based security - targeting automotive body electronics, industrial HMI, and battery-powered medical devices.

FAQ

Does CY8C4147AXI-S455 support Time-Triggered CAN (TTCAN)?

Yes. The integrated CAN 2.0B block supports TTCAN mode, enabling deterministic message scheduling, synchronization across network nodes, and fault-tolerant time-base distribution - critical for automotive body control modules and industrial motion controllers requiring ISO 11898-1 compliance.

Can the opamps operate during Deep Sleep mode?

Yes. Both opamps retain full functionality in Deep Sleep mode, including gain configuration and output driving capability, while consuming only ~100 µA each. This allows continuous analog signal conditioning (e.g., sensor biasing or signal buffering) without waking the CPU or flash subsystem.

What development tools are required for firmware and hardware design?

PSoC Creator IDE (free, Windows-only) is mandatory for schematic-based hardware configuration and component API generation. Firmware is developed in C using GCC-based toolchain integrated into PSoC Creator. Debugging uses standard Arm SWD via MiniProg3 or KitProg2; no JTAG pod or external emulator is needed.

Is flash protection reversible after enabling device security?

No. When maximum device security is enabled, all programming, debug, and test interfaces (including SWD) are permanently disabled. Recovery requires full flash erase - which clears all firmware and security settings - and reprogramming with new code that explicitly re-enables debug features before final security lock.