Infineon Technologies CY8C4245FNI-483T

Overview

CY8C4245FNI-483T from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex-M0 programmable system-on-chip (PSoC® 4200 family) featuring 48 MHz CPU, 32 kB flash, 4 kB SRAM, 12-bit 1-Msps SAR ADC, two opamps with comparator mode, and capacitive sensing (CapSense® CSD). It serves as a mixed-signal embedded controller for human interface, motor control, and sensor fusion applications requiring reconfigurable analog/digital logic.

For engineers reviewing the CY8C4245FNI-483T datasheet, CY8C4245FNI-483T pinout, CY8C4245FNI-483T application, or CY8C4245FNI-483T equivalent, key selection criteria include its 36 GPIOs with CapSense/LCD/analog/digital flexibility, Deep Sleep power consumption of 20 nA, and dual SCB blocks supporting runtime-reconfigurable I²C/SPI/UART.

Technical Context

The device integrates a single-layer AHB-Lite interconnect linking the Cortex-M0 core to SRAM, flash, and peripherals including four universal digital blocks (UDBs), each with 8 macrocells and data path. Its analog subsystem includes a CTBm block hosting two opamps, two low-power comparators, and SAR ADC input buffering - all operable in Deep Sleep mode.

Timing is managed by four 16-bit TCPWM blocks supporting center-aligned, edge-aligned, and pseudo-random PWM modes with comparator-triggered kill signals. The clock system combines IMO (internal main oscillator), ILO (internal low-speed oscillator), and external crystal support, enabling precise trade-offs between accuracy and power across operating modes from Stop (20 nA) to Active (48 MHz).

Key Specifications

Pinout & Package

Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C4247FNI-483, the CY8C4245FNI-483T offers identical silicon functionality but ships with a different bootloader configuration; versus STM32L432KC, it trades raw CPU performance for on-die analog programmability and hardware-accelerated capacitive sensing - reducing component count and firmware complexity in human-interface designs.

Availability

CY8C4245FNI-483T is available at Aetrix Electronics and suitable for industrial HMI, portable medical sensors, smart lighting controls, and battery-powered motor drives requiring stable component supply and long-term lifecycle support.

Supply support for CY8C4245FNI-483T 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 Munich, Germany, delivering power systems, microcontrollers, sensors, and security solutions for automotive, industrial, and IoT markets.

This device belongs to the PSoC® 4200 product line - designed specifically for embedded applications demanding field-reconfigurable analog and digital logic alongside low-power operation and human-interface integration.

FAQ

What debug interface does CY8C4245FNI-483T support?

The device uses Arm Serial Wire Debug (SWD) with two-wire interface (SWDIO and SWCLK on P1[0]/P1[1]). It supports full on-chip debugging, flash programming, and real-time trace without external pods. Debug is enabled by default and can be disabled via firmware; re-enabling requires full flash erase if disabled.

Does CY8C4245FNI-483T support capacitive touch with water tolerance?

Yes - it implements CapSense Sigma-Delta (CSD) with hardware-based water rejection and SmartSense™ auto-tuning. The documented SNR exceeds 5:1 under wet conditions, and no manual calibration is required. Shielding and guard ring configurations are supported via dedicated P4 pins.

Can the opamps in CY8C4245FNI-483T drive external loads directly?

Yes - each opamp supports high-drive external mode capable of sourcing/sinking ±25 mA into resistive loads, enabling direct driving of LEDs, small solenoids, or analog multiplexers without external buffers. Internal high-bandwidth mode is optimized for ADC input buffering and signal conditioning.

Is there hardware support for PWM kill signals in motor control applications?

Yes - the four TCPWM blocks support comparator-triggered kill signals with sub-microsecond response time. This hardware feature disables PWM outputs immediately upon comparator threshold violation, ensuring safe shutdown during overcurrent or overtemperature faults without CPU intervention.