Infineon Technologies CY8C4147AXI-S465

Overview

CY8C4147AXI-S465 from Infineon Technologies (acquired Cypress Semiconductor) is a PSoC 4100S Plus programmable system-on-chip featuring a 48-MHz Arm Cortex-M0+ CPU, 128 KB flash, 16 KB SRAM, and integrated CapSense® capacitive sensing with >5:1 SNR. It includes two opamps, a 12-bit 1-Msps SAR ADC, five reconfigurable SCB blocks (I²C/SPI/UART), CAN 2.0B with TTCAN support, and operates from 1.71–5.5 V in Deep Sleep at 2.5 µA - deployed in industrial HMI touch panels and smart sensor nodes.

For engineers reviewing the CY8C4147AXI-S465 datasheet, CY8C4147AXI-S465 pinout, CY8C4147AXI-S465 application, or CY8C4147AXI-S465 equivalent, key selection criteria include its programmable analog/digital fabric, on-die CapSense tuning (SmartSense™), CAN 2.0B timing compliance, Deep Sleep current budget, and SWD debug interface compatibility with Arm toolchains.

Technical Context

The device implements a single-layer AHB-Lite interconnect between CPU, memory, and peripherals, with dedicated power domains enabling independent clock gating for Active/Sleep/Deep Sleep modes. Its analog subsystem integrates two opamps with internal/external drive modes, comparator functionality, and ADC input buffering - all operable in Deep Sleep.

Digital flexibility derives from eight 16-bit TCPWM blocks supporting center-aligned PWM, quadrature decoding, and comparator-triggered kill signals; five SCBs provide runtime-reconfigurable serial protocols; and the CAN block supports Time-Triggered CAN with hardware message filtering and FIFO buffering.

Key Specifications

Pinout & Package

Package: 48-pin TQFP (0.5-mm pitch), RoHS-compliant, 7 mm × 7 mm body size, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C4147AXI-S465, CY8C4146AZI-S412 trades CAN and memory for lower cost and smaller footprint, while STM32G474RET6 offers higher compute throughput but requires external analog/touch circuitry and increases system-level validation effort.

Availability

CY8C4147AXI-S465 is available at Aetrix Electronics and suitable for industrial HMI touch panels, smart sensor nodes, motor drive control units, and medical diagnostic handhelds requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production lots.

Supply support for CY8C4147AXI-S465 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 portfolio - a leader in programmable mixed-signal SoCs for embedded control and human interface applications.

The PSoC 4100S Plus product line targets cost-sensitive, low-power industrial and consumer systems requiring integrated analog, capacitive sensing, and deterministic communication - especially where rapid prototyping and firmware-defined hardware flexibility reduce time-to-market.

FAQ

Does CY8C4147AXI-S465 support USB connectivity?

No. This device lacks a USB PHY or dedicated USB controller. Communication is limited to the five reconfigurable SCB blocks (I²C, SPI, UART) and the CAN 2.0B peripheral. USB functionality would require an external bridge IC or a different PSoC family such as PSoC 4 BLE or PSoC 6.

What is the maximum operating temperature for CY8C4147AXI-S465?

The device is rated for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in the "Device Level Specifications" section of the official datasheet (Document Number 002-19966 Rev. *H), with validated operation up to 85 °C junction temperature under specified voltage and load conditions.

Can the on-chip opamps drive capacitive loads directly?

Yes - both opamps support high-drive external mode capable of driving ≥100 pF loads with stable phase margin, as verified in the "Analog Peripherals" section of the datasheet. This enables direct connection to CapSense electrodes or external filters without added buffer stages.

Is SmartSense tuning compatible with custom PCB stack-ups?

Yes. SmartSense automatically adapts to parasitic capacitance variations caused by overlay thickness, material, and PCB trace geometry. It dynamically adjusts scan parameters (IDAC current, integration time, resolution) without requiring user intervention or pre-characterization - validated across >200 customer designs with diverse mechanical implementations.