company blog about Infineon CY8C4146AZI-S423 PSoC™ 4100S: An ARM Cortex-M0+ Microcontroller for Human-Machine Interaction and the IoT

With the growing demand for human-machine interaction (HMI) driven by the Internet of Things (IoT), smart homes, and industrial automation, a microcontroller that integrates high-performance capacitive sensing with a flexible, programmable analog module has become central to these designs. Infineon’s CY8C4146AZI-S423, part of the PSoC™ 4100S series, is based on the ARM Cortex-M0+ architecture. It not only offers powerful processing capabilities but also provides an ideal single-chip solution for applications such as touch sensing and smart control through its signature CAPSENSE™ technology.

As an authorized supplier of genuine, in-stock products, Shenzhen Mingjiada Electronics Co., Ltd. is committed to providing the market with authentic products and fast delivery services, helping customers accelerate their product R&D and mass production processes.

CY8C4146AZI-S423 Product Overview

The CY8C4146AZI-S423 is a member of the PSoC™ 4 platform’s scalable architecture. It is not a traditional MCU but rather a programmable embedded system-on-chip. It combines a 48 MHz 32-bit ARM Cortex-M0+ core, standard communication peripherals, and unique programmable analog and digital modules.

This chip is particularly well-suited for applications requiring high-performance capacitive touch sensing. Its fourth-generation CAPSENSE™ technology delivers a signal-to-noise ratio (SNR) exceeding 300:1, offering exceptional noise immunity and liquid tolerance to ensure the reliability of touch buttons, sliders, and proximity sensing even in noisy or humid environments.

CY8C4146AZI-S423 Key Features

Core and Memory: ARM Cortex-M0+ CPU, clocked at up to 48 MHz, with 64 KB of flash memory and 8 KB of SRAM.

Capacitive Sensing: Supports self-capacitance and mutual-capacitance sensing, with automatic hardware calibration (SmartSense) to optimize sensitivity without manual firmware adjustments.

Analog and Digital Peripherals:

12-bit 1-Msps SAR ADC and 10-bit ramp ADC.

2x operational amplifiers (configurable as PGA, comparators, etc.) and 2x current-to-digital converters (IDAC).

5x 16-bit timer/counter/PWM modules, 3x serial communication modules (configurable as I2C, SPI, or UART).

Smart I/O: The unique Smart I/O feature enables basic digital logic at the pin level, reducing the need for external logic chips.

Wide-voltage operation: Supports supply voltages from 1.71 V to 5.5 V, making it suitable for battery-powered devices.

Package and Temperature: 48-TQFP package (7x7 mm), industrial-grade temperature range of -40°C to 85°C.

Key Applications

Thanks to its powerful CAPSENSE™ touch sensing and mixed-signal processing capabilities, the CY8C4146AZI-S423 is ideally suited for the following applications:

Industrial and Home Appliance Human-Machine Interfaces: Capacitive touch panels replacing mechanical buttons, liquid level detection, and home appliance control panels (e.g., washing machines, microwave ovens).

Internet of Things (IoT) Sensor Nodes: Smart sensors supporting low-power operation, environmental monitoring devices, and smart lighting control.

Automotive Interior HMI: Suitable for infotainment systems, air conditioning control panels, and touch-sensitive door handles (some series support AEC-Q100; this model is standard industrial grade).

Portable Medical and Consumer Electronics: Blood glucose meters, smart wearables, wireless mice, keyboards, etc.

Mingjiada in Stock

Shenzhen Mingjiada Electronics Co., Ltd., established in 1996, specializes in the distribution of electronic components and is certified to ISO 9001 and ISO 14001. As a stock supplier of Infineon products, Mingjiada offers genuine, original CY8C4146AZI-S423 components in stock.

Supply Advantages: Genuine factory-sealed products, in-stock inventory, and support for both sample and bulk purchases.

Service Support: We provide one-stop BOM fulfillment services covering industrial control, the Internet of Things (IoT), automotive electronics, and other fields.

To obtain the latest inventory information, pricing, or samples, please contact the Mingjiada Electronics sales team.