Infineon Technologies CY8C4127AXI-S445
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $12.34 | $12.34 |
| 15+ | $2.83 | $42.45 |
| 25+ | $2.77 | $69.25 |
| 50+ | $2.62 | $131.00 |
| 100+ | $2.31 | $231.00 |
| N+ | $0.46 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Infineon Technologies |
| Product Series | PSOC™ 4 CY8C4100S Plus |
| Packaging | Tray | NULL |
| Core Processor | ARM® Cortex®-M0+ |
| Core Size | 32-Bit Single-Core |
| Speed | 24MHz |
| Connectivity | I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART |
| Peripherals | Brown-out Detect/Reset, CapSense, LCD, POR, PWM, WDT |
| Number of I/O | 54 |
| Program Memory Size | 128KB (128K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | - |
| RAM Size | 16K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.71V ~ 5.5V |
| Data Converters | A/D 16x10b Slope, 16x12b SAR; D/A 2xIDAC |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 64-TQFP (14x14) |
| Package / Case | 64-LQFP |
| ROHS |
The Infineon CY8C4127AXI-S445 is a PSoC 4 microcontroller built around a 24MHz ARM Cortex-M0+ core. It offers 128KB flash and 16KB SRAM, with a wide 1.71V to 5.5V supply range. Integrated CapSense, LCD drive, and programmable analog blocks make it a flexible choice for human-machine interfaces and sensor applications. The 64-LQFP package supports compact designs while providing ample I/O for peripheral integration.
- Integrated CapSense: Eliminates external touch ICs, reducing BOM cost and board space.
- Wide Voltage Range (1.71V-5.5V): Simplifies power supply design and supports battery operation.
- Programmable Analog Blocks: Enables custom sensor interfaces without external op-amps.
- LCD Direct Drive: Reduces need for separate display driver chips in cost-sensitive products.
Industrial Control Panels
With CapSense and LCD support, this MCU enables sleek, touch-based user interfaces for industrial equipment, reducing mechanical wear and improving reliability.
Portable Medical Devices
The 1.71V to 5.5V supply range and low-power ARM Cortex-M0+ core allow battery-operated health monitors to run longer while maintaining accurate sensor readings.
Smart Home Thermostats
Integrated PWM and CapSense simplify the design of touch-controlled thermostats, while the LCD driver provides clear local display of temperature and settings.
Automotive Interior Lighting
Operating from -40°C to 85°C, this MCU can manage PWM-based LED dimming and color control in vehicle cabin lighting systems with high reliability.
White Goods User Interfaces
The 128KB flash and 16KB RAM provide ample space for UI logic and communication protocols, making it ideal for washing machines and ovens with touch panels.
Sensor Hub for IoT Nodes
Multiple serial interfaces and analog capabilities allow aggregation of environmental sensors, with the WDT ensuring robust operation in remote deployments.
- Q: What is the operating voltage range of the CY8C4127AXI-S445?
- A: It operates from 1.71V to 5.5V, supporting both low-power and standard applications.
- Q: Does this MCU support capacitive touch sensing?
- A: Yes, it includes CapSense technology for reliable touch and proximity sensing.
- Q: What is the maximum CPU speed?
- A: The ARM Cortex-M0+ core runs at up to 24MHz.
- Q: What package is available?
- A: It comes in a 64-LQFP package, suitable for compact PCB designs.
- Q: What are the key integrated peripherals?
- A: It features LCD drive, PWM, WDT, POR, and brown-out detect/reset.
- Q: What is the operating voltage range of the CY8C4127AXI-S445?
- A: It operates from 1.71V to 5.5V, supporting both low-power and standard applications.
- Q: Does this MCU support capacitive touch sensing?
- A: Yes, it includes CapSense technology for reliable touch and proximity sensing.
- Q: What is the maximum CPU speed?
- A: The ARM Cortex-M0+ core runs at up to 24MHz.
- Q: What package is available?
- A: It comes in a 64-LQFP package, suitable for compact PCB designs.
- Q: What are the key integrated peripherals?
- A: It features LCD drive, PWM, WDT, POR, and brown-out detect/reset.

CY8C4127AXI-S445.pdf