Infineon Technologies CY8C4246AZI-M445

Overview

CY8C4246AZI-M445 from Infineon is a PSoC™ 4200M programmable system-on-chip featuring a 48 MHz Arm® Cortex®-M0 CPU, 128 kB flash, 16 kB SRAM, four opamps with Deep Sleep operation, and integrated capacitive sensing (CSD) with >5:1 SNR. It serves as a reconfigurable embedded controller in industrial HMI, motor control interfaces, and low-power sensor nodes requiring analog/digital co-processing.

For engineers reviewing the CY8C4246AZI-M445 datasheet, CY8C4246AZI-M445 pinout, CY8C4246AZI-M445 application, or CY8C4246AZI-M445 equivalent, key selection criteria include its dual CAN support, programmable UDB logic, TCPWM kill-signal triggering for safety-critical timing, and SmartSense auto-tuning for robust touch interfaces.

Technical Context

The device integrates a fixed-function Arm® Cortex®-M0 core with two independent CAN 2.0B controllers, eight 16-bit TCPWM blocks supporting center-aligned PWM and comparator-triggered kill signals, and four universal digital blocks (UDBs) each with 8 macrocells and an 8-bit data path for custom state-machine implementation.

Analog subsystem includes a 12-bit SAR ADC (1 Msps), four rail-to-rail opamps operable in Deep Sleep at microamp quiescent current, two low-power comparators, and dedicated CSD hardware enabling water-tolerant capacitive sensing on any GPIO - all routed via programmable interconnect without external components.

Key Specifications

Pinout & Package

This device is packaged in a 44-pin TQFP (7 mm × 7 mm, 0.8 mm pitch) with exposed thermal pad. Pin functions are fully configurable via PSoC™ Creator; no fixed peripheral-to-pin mapping exists - all analog/digital/CAPSENSE™/LCD resources route dynamically through programmable interconnect.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C4246AZI-M445, the M485 offers USB connectivity at higher cost and power, while the M412 trades memory capacity for lower unit price - both retain identical CSD performance, TCPWM safety features, and Deep Sleep current, making them drop-in alternatives only where memory or interface needs differ.

Availability

CY8C4246AZI-M445 is available at Aetrix Electronics and suitable for industrial HMI, motor control interfaces, smart energy metering, and portable medical sensor nodes requiring stable component supply across extended temperature ranges (–40°C to +105°C).

Supply support for CY8C4246AZI-M445 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 is a global semiconductor leader headquartered in Germany, specializing in power management, automotive MCUs, and secure connectivity solutions.

CY8C4246AZI-M445 belongs to the PSoC™ 4200M product line - designed specifically for cost-sensitive, low-power embedded systems requiring field-reconfigurable analog and digital logic in a single chip, targeting industrial automation and human-machine interface applications.

FAQ

Does CY8C4246AZI-M445 support CAN FD?

No. This device integrates two CAN 2.0B controllers only, with bit rates up to 1 Mbps and standard 11-bit identifier support. CAN FD functionality is not implemented in the PSoC™ 4200M series - it requires PSoC™ 6 or later-generation devices with dedicated FD-capable peripherals.

Can the SAR ADC perform simultaneous sampling on multiple channels?

No. The 12-bit SAR ADC has a single sample-and-hold circuit and sequential conversion architecture. It achieves 1 Msps aggregate throughput across up to 16 channels via hardware scanning, but true simultaneous sampling requires external parallel ADCs or PSoC™ 6's dual-SAR configuration.

Is the SmartSense auto-tuning feature enabled by default in firmware?

Yes. SmartSense is implemented in hardware and activated automatically during CSD initialization via Infineon's CapSense_CSD_Scan() API. No user calibration code is required - baseline tracking, finger threshold adaptation, and noise rejection are handled in dedicated firmware components provided with PSoC™ Creator.

What debug interface does CY8C4246AZI-M445 use, and is JTAG supported?

It uses Serial Wire Debug (SWD) with SWDIO and SWCLK pins only - JTAG is not supported. SWD provides full programming, real-time variable inspection, and breakpoint debugging with minimal pin count, and is compatible with industry-standard tools including Arm Keil MDK, IAR Embedded Workbench, and OpenOCD-based debuggers.