Infineon Technologies CY8C4147AZI-S475

Overview

CY8C4147AZI-S475 from Infineon Technologies (acquired Cypress Semiconductor) is a 32-bit Arm Cortex-M0+ programmable system-on-chip (PSoC) with integrated CapSense capacitive sensing, analog peripherals (2 opamps, 12-bit 1-Msps SAR ADC), digital logic blocks, CAN 2.0B interface, and up to 54 GPIOs in 48-pin TQFP package. It operates from 1.71–5.5 V, supports Deep Sleep at 2.5 µA, and targets embedded human-interface and industrial control applications requiring mixed-signal reconfigurability.

For engineers reviewing the CY8C4147AZI-S475 datasheet, CY8C4147AZI-S475 pinout, CY8C4147AZI-S475 application, or CY8C4147AZI-S475 equivalent, key selection criteria include its 48-MHz CPU clock, CapSense sigma-delta architecture with >5:1 SNR, CAN 2.0B compliance, programmable analog routing, and PSoC Creator IDE integration for hardware/firmware co-design.

Technical Context

The device integrates a single-core Arm Cortex-M0+ CPU with 128 KB flash (Read Accelerator), 16 KB SRAM, and an 8-channel DMA engine. Its analog subsystem includes two rail-to-rail opamps supporting comparator and ADC buffering modes, plus a dedicated capacitance-sensing block enabling single-slope 10-bit ADC functionality.

Digital resources comprise five reconfigurable Serial Communication Blocks (SCBs) supporting I²C/SPI/UART, eight 16-bit TCPWM blocks with center-aligned PWM and quadrature decoding, and a CAN 2.0B controller with Time-Triggered CAN (TTCAN) support - all interconnected via a single-layer AHB-Lite bus and programmable routing matrix.

Key Specifications

Pinout & Package

Package: 48-pin TQFP (0.5-mm pitch), RoHS-compliant, body size 7 mm × 7 mm. Pinout validated per Cypress datasheet 002-19966 Rev. *H, Page 10–12 (Pin Functions table and Alternate Pin Functions section).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable mixed-signal MCU applications.

Compared with STM32G071KB and RP2040, CY8C4147AZI-S475 uniquely combines CapSense sigma-delta sensing, CAN 2.0B with TTCAN, and field-programmable analog routing - enabling single-chip solutions for touch-enabled industrial nodes where analog signal integrity, network reliability, and security are co-dependent design constraints.

Availability

CY8C4147AZI-S475 is available at Aetrix Electronics and suitable for industrial HMI panels, automotive body control modules, and medical patient monitoring devices requiring stable component supply, long-term lifecycle support, and qualified traceable sourcing.

Supply support for CY8C4147AZI-S475 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 product line. Infineon is a global semiconductor leader focused on power systems, automotive electronics, and secure connectivity solutions.

This device belongs to the PSoC 4100S Plus family - designed specifically for cost-sensitive, low-power embedded systems requiring integrated capacitive sensing, programmable analog, and CAN connectivity without external support ICs.

FAQ

What development tools are required to program CY8C4147AZI-S475?

PSoC Creator IDE (free, Windows-only) is the official tool for schematic-based hardware configuration and firmware development. It auto-generates peripheral initialization code and supports drag-and-drop component placement. Debugging uses standard Arm Serial Wire Debug (SWD) via MiniProg3 or KitProg2 programmers - no JTAG emulator required.

Does CY8C4147AZI-S475 support secure boot and firmware authentication?

Yes. The device includes a True Random Number Generator (TRNG) for cryptographic key derivation and flash protection bits that prevent unauthorized read-out. Secure boot can be implemented using the 8 KB supervisory ROM bootloader and customer-defined signature verification in flash - meeting IEC 62443-3-3 SL2 requirements when configured per Infineon's AN94645.

Can all GPIO pins be used for CapSense simultaneously?

No. CapSense requires dedicated analog routing resources and shared CTBm (Capacitance Tuning Block) hardware. Up to 32 pins can be configured as CapSense electrodes depending on sensor count and resolution settings, but concurrent use of all 54 GPIOs for CapSense is not supported due to internal analog mux limitations documented in Section 7.2 of the TRM.

Is external crystal required for CAN operation?

No. CAN 2.0B timing compliance is achieved using the internal 48-MHz PLL clock derived from the ±2% IMO, eliminating need for external crystal. However, for TTCAN or applications requiring tighter timing accuracy (<±0.1%), a 4–33 MHz external crystal oscillator (ECO) is recommended to feed the PLL for improved jitter performance.