Infineon Technologies CY8C4149AZSS558XQLA1

Overview

CY8C4149AZSS558XQLA1 from Infineon is an AEC-Q100 Grade-S (–40°C to +105°C) automotive-qualified PSoC™ 4100S Max microcontroller based on the Arm® Cortex®-M0+ CPU running at 48 MHz, featuring 384 KB flash, 32 KB SRAM, CAN FD up to 5 Mbps, and integrated CAPSENSE™ with SmartSense auto-tuning. It serves as a reconfigurable system-on-chip for safety-critical body electronics and human-machine interface applications.

For engineers reviewing the CY8C4149AZSS558XQLA1 datasheet, CY8C4149AZSS558XQLA1 pinout, CY8C4149AZSS558XQLA1 application, or CY8C4149AZSS558XQLA1 equivalent, key selection criteria include CAN FD timing compliance, Deep Sleep current (2.5 µA), SAR ADC resolution (12-bit, 1-Msps), MSC SNR (>5:1), and GPIO flexibility (up to 84 pins, all CAPSENSE™-capable).

Technical Context

The device integrates a single-layer AHB-Lite interconnect linking the Cortex-M0+ core, 5 reconfigurable Serial Communication Blocks (SCBs), and dedicated CAN FD controller with bit-rate switching support up to 5 Mbps. Its analog subsystem includes two opamps with Deep Sleep operation, a 12-bit SAR ADC with temperature sensor and channel sequencer, and dual low-power comparators - all accessible via programmable I/O matrix.

Digital reconfigurability is enabled by Smart I/O blocks for Boolean logic on port signals, eight TCPWM units supporting quadrature decoding and kill-signal triggering, and hardware cryptography accelerators (AES, SHA, TRNG, CRC). Clocking combines ECO+PLL (48 MHz), WCO (32 kHz), IMO (±2%), and ILO (40 kHz) sources with dynamic power mode control.

Key Specifications

Pinout & Package

This device is packaged in a 100-pin TQFP (Thin Quad Flat Package) with 0.5 mm pitch, lead-free and RoHS-compliant, designed for automotive PCB assembly and thermal reliability under extended temperature cycling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S32K144W and RL78/F14, CY8C4149AZSS558XQLA1 uniquely combines CAN FD, hardware-accelerated CAPSENSE™, and Deep Sleep analog operation - making it optimal for next-generation automotive HMIs and distributed safety monitors where integration density and ultra-low-power sensing are design drivers.

Availability

CY8C4149AZSS558XQLA1 is available at Aetrix Electronics and suitable for body control modules, touch-based climate panels, electronic parking brake actuators, and automotive gateway nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY8C4149AZSS558XQLA1 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 ICs, and security solutions, with global manufacturing and automotive qualification expertise.

CY8C4149AZSS558XQLA1 belongs to the PSoC™ 4100S Max product line, engineered specifically for AEC-Q100-compliant automotive body electronics and human-machine interface systems demanding reconfigurable analog/digital resources and functional safety readiness.

FAQ

What is the maximum operating temperature grade for CY8C4149AZSS558XQLA1?

CY8C4149AZSS558XQLA1 is qualified to AEC-Q100 Grade-S, supporting continuous operation from –40°C to +105°C. This rating is verified per test condition 2.5 of the AEC-Q100 standard and applies to the full 100-pin TQFP package variant. No derating is required within this range for automotive cabin or engine bay proximity applications.

Does CY8C4149AZSS558XQLA1 support CAN FD ISO physical layer compliance?

CY8C4149AZSS558XQLA1 implements the CAN FD protocol stack and bit-rate switching logic but requires an external CAN FD transceiver (e.g., Infineon TLE9251VS) for ISO 11898-2/3 physical layer compliance. The internal CAN FD block provides full protocol handling including FD frame formatting, CRC calculation, and error confinement.

Can all 84 GPIOs be used simultaneously for CAPSENSE™ sensing?

No - while all GPIOs are CAPSENSE™-capable, the Multi-Sense Converter (MSC) block supports up to 32 simultaneous sensing channels. Channel allocation is managed via hardware resource arbitration in the PSoC Creator or ModusToolbox™ configuration tools, with priority given to active scan groups defined in firmware.

Is hardware cryptographic acceleration available in Deep Sleep mode?

No - the Crypto block (AES, SHA, TRNG, CRC) is disabled in Deep Sleep mode to maintain 2.5 µA system current. Cryptographic operations must be completed in Active or Sleep mode; TRNG output can be pre-generated and stored in SRAM before entering Deep Sleep for later use.