Infineon Technologies CY8C4147AZA-S285

Overview

CY8C4147AZA-S285 from Infineon is an AEC-Q100 Grade-S qualified automotive PSoC™ 4100S Plus microcontroller 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 a CAN 2.0B block with TTCAN support, eight 16-bit TCPWM units, and five reconfigurable SCBs for I²C/SPI/UART/LIN. Used in automotive body control modules requiring robust touch interface and real-time communication.

For engineers reviewing the CY8C4147AZA-S285 datasheet, CY8C4147AZA-S285 pinout, CY8C4147AZA-S285 application, or CY8C4147AZA-S285 equivalent, key selection criteria include AEC-Q100 Grade-S temperature range (–40°C to +105°C), on-chip CAN 2.0B with time-triggered capability, Deep Sleep current of 2.5 µA, and hardware-accelerated CAPSENSE™ with SmartSense auto-tuning.

Technical Context

This device implements a tightly integrated mixed-signal SoC architecture where the Arm® Cortex®-M0+ core coordinates programmable analog (CTB opamps, SAR ADC, IDACs) and digital resources (TCPWM, SCB, CAN, Smart I/O). Its clock system combines a 4–33 MHz ECO, PLL, WCO, and ±2% IMO to support deterministic timing across automotive subsystems.

The CAN block supports full CAN 2.0B with TTCAN compliance, enabling synchronized message scheduling in distributed vehicle networks. CAPSENSE™ uses capacitive sigma-delta (CSD) modulation with hardware-based noise rejection and automatic calibration-critical for wet-environment touch interfaces in door handles or center consoles.

Key Specifications

Pinout & Package

Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive mixed-signal microcontroller applications.

Compared with S32K144 and RL78/F14, CY8C4147AZA-S285 uniquely integrates CAPSENSE™ CSD, TTCAN, and Deep Sleep analog operation in a single AEC-Q100 Grade-S package-enabling compact, low-power, and high-SNR automotive HMI designs without external components.

Availability

CY8C4147AZA-S285 is available at Aetrix Electronics and suitable for automotive door modules, body control units, smart rearview mirrors, and seat position memory systems requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.

Supply support for CY8C4147AZA-S285 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 German semiconductor manufacturer specializing in power management, automotive MCUs, and security solutions, with global R&D and manufacturing infrastructure.

CY8C4147AZA-S285 belongs to the PSoC™ 4100S Plus product line, engineered specifically for automotive human-machine interface (HMI) and body electronics applications demanding integrated capacitive sensing, CAN connectivity, and AEC-Q100 reliability.

FAQ

What is the maximum operating frequency of the Arm® Cortex®-M0+ core in CY8C4147AZA-S285?

The Arm® Cortex®-M0+ core operates at up to 48 MHz, achieved via internal PLL multiplication of the 4–33 MHz external crystal oscillator (ECO) or ±2% internal main oscillator (IMO). This frequency is fully supported across the –40°C to +105°C Grade-S temperature range and enables deterministic real-time response for automotive control loops.

Does CY8C4147AZA-S285 support CAN FD or only classical CAN 2.0B?

CY8C4147AZA-S285 implements a CAN 2.0B-compliant controller with time-triggered CAN (TTCAN) support but does not support CAN FD. It provides 32 message objects, programmable bit timing, and hardware timestamping-sufficient for body domain communication at up to 1 Mbps, aligned with ISO 11898-1.

How many CAPSENSE™ sensors can be implemented simultaneously on this device?

Up to 64 self-capacitance or mutual-capacitance sensors can be scanned concurrently using the hardware CSD engine, limited only by available GPIO pins and scan time budget. The device supports automatic baseline tracking, noise filtering, and SmartSense auto-tuning-enabling production-ready touch interfaces without firmware-level signal processing.

Is the 12-bit SAR ADC capable of simultaneous sampling across multiple channels?

No-the 12-bit SAR ADC features a single conversion core with a channel sequencer and hardware averaging, but it does not support true simultaneous sampling. However, its 1-Msps throughput and programmable sequencer allow rapid interleaved acquisition across up to 16 channels with configurable sample-and-hold timing, suitable for multi-sensor automotive monitoring.