Infineon Technologies CY8C4149AZSS545XQLA1

Overview

CY8C4149AZSS545XQLA1 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, integrated CAN FD (up to 5 Mbps), and multi-sense capacitive sensing (MSC) with >5:1 SNR for touch interfaces in harsh environments.

For engineers reviewing the CY8C4149AZSS545XQLA1 datasheet, CY8C4149AZSS545XQLA1 pinout, CY8C4149AZSS545XQLA1 application, or CY8C4149AZSS545XQLA1 equivalent, this device supports reconfigurable analog/digital blocks, five runtime-reconfigurable SCBs (I²C/SPI/UART/LIN), eight TCPWMs, hardware crypto acceleration (AES/SHA/TRNG), and LCD segment drive - critical for automotive body control, infotainment HMI, and motor control edge nodes.

Technical Context

The CY8C4149AZSS545XQLA1 implements a tightly coupled system-on-chip architecture where the Cortex-M0+ core interfaces via single-layer AHB-Lite to programmable analog (CTBm opamps, SAR ADC, LP comparators), digital logic (Smart I/O, TCPWM), and fixed-function peripherals (CAN FD, I2S TX Master, MSC). Its clock system integrates ECO+PLL (48 MHz), WCO, IMO (±2%), and ILO (40 kHz) for precise timing across sleep/wake transitions.

It supports Deep Sleep mode with 2.5 µA digital current while maintaining active analog functions including opamp buffering, comparator monitoring, and CAPSENSE™ wake-up - enabled by dedicated power domains and configurable GPIO drive modes across up to 84 pins in a 100-pin TQFP package.

Key Specifications

Pinout & Package

CY8C4149AZSS545XQLA1 is housed in a 100-pin Thin Quad Flat Package (TQFP) with 0.5 mm pitch, thermally enhanced for automotive thermal cycling compliance. Pin assignments support full GPIO reconfiguration: any pin may serve as digital I/O, analog input (ADC/CAPSENSE™), or serial interface signal (SCB/CAN FD/I2S), subject to port-level routing constraints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S32K144HAT0MLHT and RL78/F14, CY8C4149AZSS545XQLA1 uniquely combines AEC-Q100 Grade-S qualification, integrated CAPSENSE™ with SmartSense, CAN FD, and hardware crypto in a single 100-pin TQFP - making it optimal for touch-enabled automotive edge nodes where mixed-signal integration and functional safety readiness matter.

Availability

CY8C4149AZSS545XQLA1 is available at Aetrix Electronics and suitable for automotive body control modules, infotainment HMI systems, and electric power steering sensor nodes requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 compliance.

Supply support for CY8C4149AZSS545XQLA1 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 R&D and manufacturing facilities supporting ISO/TS 16949 and IATF 16949 certified processes.

CY8C4149AZSS545XQLA1 belongs to the PSoC™ 4100S Max product line, designed specifically for automotive-grade human-machine interface, body electronics, and motor control applications requiring reconfigurable analog/digital resources and functional safety readiness.

FAQ

What is the maximum operating frequency of the Arm® Cortex®-M0+ core in CY8C4149AZSS545XQLA1?

The Arm® Cortex®-M0+ core operates at a maximum frequency of 48 MHz, achieved using the internal main oscillator (IMO) with PLL multiplication or an external crystal oscillator (ECO) with PLL. This frequency is fully supported across the entire Grade-S temperature range (–40°C to +105°C) and is validated per AEC-Q100 stress testing protocols.

Does CY8C4149AZSS545XQLA1 support CAN FD with hardware bit rate switching?

Yes, the integrated CAN FD block supports bit rate switching - allowing arbitration phase at 1 Mbps and data phase up to 5 Mbps - with dedicated hardware filtering, message RAM, and error counters. It complies with ISO 11898-1:2015 and supports flexible data-length frames up to 64 bytes.

How many GPIO pins support CAPSENSE™ functionality?

All 84 programmable GPIO pins support CAPSENSE™ sensing through the Multi-Sense Converter (MSC) block. Each pin can be dynamically assigned as a shield, sense, or mutual-capacitance electrode, with hardware-accelerated scanning and SmartSense auto-tuning enabled per sensor group.

Is the 12-bit SAR ADC capable of differential measurements with internal reference?

Yes, the 12-bit SAR ADC supports true differential input mode using internal references (VREFINT or VDDA/2), with programmable gain (1×, 2×, 4×, 8×) and channel sequencing with hardware averaging across up to 32 samples - all operable in Deep Sleep mode with wake-on-conversion-complete interrupt.