The Infineon PSOC™ 4100T Plus is a 48 MHz PSOC 4 microcontroller that combines system-control resources with capacitive, inductive and liquid-level sensing. Infineon positions it for low-power human-machine interface (HMI) and control designs, including appliances, touch-controlled screens and connected IoT products. Its named evaluation option is the CY8CPROTO-041TP prototyping kit.
What is the PSOC 4100T Plus MCU?
It is an Arm Cortex-M0+ microcontroller in Infineon’s PSOC 4 family. The company’s datasheet, revision *H dated November 7, 2025, specifies a 48 MHz core, up to 128 KB of flash and up to 32 KB of SRAM. The device operates from 1.71 V to 5.5 V and includes a 12-bit, 1 MSPS ADC with an eight-channel sequencer, up to 53 GPIOs, serial communication blocks, and timer/counter/PWM resources. Infineon PSOC 4100T Plus datasheet
These general-purpose resources support control and peripheral interfacing; the product’s distinguishing proposition is integrating them with several sensing modes on one chip. Infineon describes a single-chip approach to system control and touch HMI, rather than a finished appliance or user product. Infineon product brief
What sensing technologies does it support?
The PSOC 4100T Plus combines fifth-generation CAPSENSE capacitive sensing with inductive sensing and liquid-level sensing. The datasheet also describes CAPSENSE-based hover touch and proximity functions. Infineon calls this combination Multi-Sense and presents the sensing modes as usable together with system control and HMI. Infineon PSOC 4100T Plus datasheet Infineon product brief
#1 Best Overall
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- Capacitive: touch interfaces using CAPSENSE, including hover and proximity use cases.
- Inductive: interface designs such as touch controls on metal, as illustrated in Infineon’s Multi-Sense materials.
- Liquid-level: sensing liquid in an application, including designs where liquid tolerance matters.
Infineon specifies an SNR greater than 5:1 for its ratio-metric sensing architecture and describes liquid tolerance. These are manufacturer-stated specifications, not independent comparative test results. Infineon PSOC 4100T Plus datasheet
Can one MCU handle system control and touch HMI?
That is the integration goal Infineon describes: a single device can provide control resources alongside touch and other sensing functions. Whether it can replace separate components in a particular design depends on the required sensor inputs, I/O, memory, package, software and electrical conditions. Designers should check those requirements against the exact part and package before choosing it.
Rank #2
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Infineon identifies white goods, small home appliances, touch-controlled screens and smart connected IoT products as intended low-power application areas. Its examples include waterproof touch controls as well as touch-on-metal and liquid sensing. These are possible design applications, not evidence that a specific commercial product uses the MCU. Infineon PSOC 4100T Plus datasheet Infineon Multi-Sense documentation
What are the specified power figures?
Infineon’s revision *H datasheet, dated November 7, 2025, gives 8 µA for always-on touch sensing in Deep Sleep and 300 µA average for active touch detection and tracking. These are vendor specifications for the stated sensing conditions; they should not be read as total application power or as independently measured results. Actual system consumption depends on configuration and the rest of the design. Infineon PSOC 4100T Plus datasheet
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What is the PSOC 4100T Plus prototyping kit?
Infineon names the CY8CPROTO-041TP PSOC 4100T Plus prototyping kit for device evaluation and development. The datasheet also identifies MiniProg4 and MiniProg3 as all-in-one development programmers/debuggers. Check Infineon or a distributor for current stock and pricing; those details are not established by the product documentation cited here. Infineon CY8CPROTO-041TP kit information
ModusToolbox and CAPSENSE middleware are part of the relevant software and design ecosystem. Confirm current software support and the workflow for the exact device and project in Infineon’s development resources. Infineon software resources
Rank #4
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What should designers check before migrating or selecting it?
Infineon describes an upgrade path for PSOC 4100 and PSOC 4100S designs to fifth-generation HMI technology, with software and package compatibility. It also identifies PSOC 4000T designs needing more sensor inputs or memory as a migration context. These statements do not establish universal drop-in compatibility: verify the exact part, package, pinout and software implications against the existing design. Infineon PSOC 4100T Plus datasheet Infineon product brief
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
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- Confirm the required sensing modes and sensor-input count.
- Check flash, SRAM, GPIO, serial interfaces and package against the application.
- Assess standby and active sensing power in the context of the whole product.
- Validate operating voltage and the design’s environmental and qualification requirements.
- Check software, development tools and kit availability for the intended workflow.
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