Infineon Technologies CY8C4146AZI-S453

Overview

CY8C4146AZI-S453 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, integrated CapSense sigma-delta capacitive sensing, CAN 2.0B interface, and programmable analog/digital blocks. It operates from 1.71–5.5 V and supports Deep Sleep mode with 2.5 µA system current while maintaining opamp and comparator functionality - deployed in industrial HMI touch panels requiring robust water-tolerant sensing and real-time motor control coordination.

For engineers reviewing the CY8C4146AZI-S453 datasheet, CY8C4146AZI-S453 pinout, CY8C4146AZI-S453 application, or CY8C4146AZI-S453 equivalent, key selection criteria include its integrated CAN 2.0B block with Time-Triggered CAN support, 12-bit 1-Msps SAR ADC with channel sequencer, SmartSense™ automatic tuning for CapSense, and SWD debug interface with four breakpoint comparators - all within a 44-pin TQFP package.

Technical Context

The device implements a single-layer AHB-Lite interconnect between CPU, memory, and peripherals, with dedicated power management for Active/Sleep/Deep Sleep modes. Its clock architecture integrates IMO (±2%), ILO (32 kHz), WCO, ECO (4–33 MHz), and PLL to generate stable 48-MHz HFCLK with glitch-free switching and 18 configurable dividers - six supporting fractional division for precise peripheral timing.

Analog subsystem includes two reconfigurable opamps (supporting external high-drive or internal high-bandwidth modes), two low-power comparators active in Deep Sleep, and a capacitance-sensing block delivering 10-bit ADC resolution. Digital resources comprise five reconfigurable SCBs (I²C/SPI/UART), eight 16-bit TCPWM blocks with quadrature decode and kill-signal triggering, and programmable logic blocks enabling Boolean operations on GPIOs.

Key Specifications

Pinout & Package

44-pin TQFP (0.8-mm pitch), RoHS-compliant, lead-free, body size 10 × 10 mm, exposed pad not present. Pinout validated per Cypress document 002-19966 Rev. *H, pages 10–12.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G071KB and RP2040, CY8C4146AZI-S453 uniquely combines certified CapSense, TTCAN, and Deep Sleep analog operation in one die - eliminating BOM components and PCB area for industrial HMI and motor control edge nodes requiring co-located sensing, actuation, and deterministic networking.

Availability

CY8C4146AZI-S453 is available at Aetrix Electronics and suitable for industrial HMI touch panels, smart motor drive controllers, secure IoT edge nodes, and medical diagnostic handhelds requiring stable component supply across extended product lifecycles.

Supply support for CY8C4146AZI-S453 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 family - a leader in programmable mixed-signal SoCs for embedded control and human-machine interface applications.

The PSoC 4100S Plus product line targets resource-constrained, low-power industrial and medical edge devices requiring integrated analog sensing, deterministic communication, and secure firmware execution - with emphasis on CapSense reliability and CAN timing precision.

FAQ

Does CY8C4146AZI-S453 support CAN FD?

No. CY8C4146AZI-S453 implements CAN 2.0B only, with full support for Time-Triggered CAN (TTCAN) for deterministic scheduling. It does not include CAN FD features such as flexible data-rate or extended payload length. For CAN FD, consider Infineon's newer PSoC 62 series or standalone CAN FD transceivers paired with this device's SCB in UART mode for protocol bridging.

Can the SAR ADC perform simultaneous sampling on multiple channels?

No. The 12-bit SAR ADC has a single conversion core with hardware channel sequencing and averaging, but no true simultaneous sampling capability. It cycles through configured channels at up to 1 Msps aggregate rate, with minimum 1 µs inter-channel delay. For true simultaneous capture, external parallel ADCs or multiplexed sampling with precise trigger alignment must be used.

What is the maximum operating temperature for continuous Deep Sleep mode?

The device is rated for industrial temperature range (–40°C to +85°C) under all operating modes, including Deep Sleep. Thermal validation per JEDEC JESD22-A104 confirms stable 2.5 µA Deep Sleep current up to +85°C ambient with proper PCB thermal design - no derating required for sustained operation within datasheet limits.

Is SmartSense™ compatible with custom PCB layouts and non-standard overlay materials?

Yes. SmartSense™ adapts to parasitic capacitance variations caused by PCB trace geometry, overlay thickness (up to 8 mm), and material dielectric constant (ε_r = 2–10). It dynamically adjusts IDAC current, scan resolution, and baseline tracking - validated across acrylic, glass, polycarbonate, and laminated overlays in production-grade designs per AN85951.