Infineon Technologies CY8C4248LTI-L485

Overview

CY8C4248LTI-L485 from Infineon is a 32-bit Arm® Cortex®-M0 microcontroller in the PSoC™ 4200L family, integrating programmable analog (4 opamps, 2 comparators, 12-bit SAR ADC), digital logic (8 UDBs), and communication peripherals (4 SCBs, USB FS, 2 CAN). It operates from 1.71–5.5 V, supports Deep Sleep at 20 nA, and delivers up to 48 MHz performance with 256 kB flash and 32 kB SRAM - deployed in industrial HMI touch panels with CAPSENSE™.

For engineers reviewing the CY8C4248LTI-L485 datasheet, CY8C4248LTI-L485 pinout, CY8C4248LTI-L485 application, or CY8C4248LTI-L485 equivalent, key selection criteria include its dual CAN interface, on-die capacitive sensing (CSD) SNR >5:1, Deep Sleep wakeup via GPIO, and reconfigurable SCB blocks supporting I²C/SPI/UART runtime switching.

Technical Context

The device implements an Arm® Cortex®-M0 core with single-cycle multiply and a tightly coupled memory subsystem including 256 kB flash (with Read Accelerator) and 32 kB SRAM. Its clock system integrates IMO (8–48 MHz), ILO (32.768 kHz), and support for external crystals with PLL multiplication.

Analog subsystem includes four CTBm opamps (operable in Deep Sleep), two low-power comparators, and two CSD blocks enabling high-SNR (>5:1), water-tolerant capacitive sensing. Digital flexibility comes from eight universal digital blocks (UDBs), each with 8 macrocells and 8-bit datapath, plus four serial communication blocks (SCBs) configurable as I²C, SPI, or UART at runtime.

Key Specifications

Pinout & Package

This device is packaged in a 68-pin QFN (9 × 9 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the CY8C4248LTI-L485 pinout diagram in Infineon's datasheet Rev. *L, Section 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C4247LTI-DM485 and STM32G474RET6, the CY8C4248LTI-L485 uniquely combines dual CAN, USB FS with BCD, and hardware-accelerated CSD in a single die - reducing component count and firmware integration effort for touch-enabled industrial gateways.

Availability

CY8C4248LTI-L485 is available at Aetrix Electronics and suitable for industrial HMI touch panels, automotive body control modules, portable medical sensor hubs, and smart home energy monitors requiring stable component supply and long-term lifecycle support.

Supply support for CY8C4248LTI-L485 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 German semiconductor manufacturer specializing in power management, automotive MCUs, and security solutions, with global R&D and manufacturing infrastructure.

The PSoC™ 4200L product line targets cost-sensitive, low-power embedded systems requiring analog integration, capacitive sensing, and flexible digital logic - especially in industrial HMI, appliance control, and automotive body electronics.

FAQ

Does CY8C4248LTI-L485 support USB device enumeration without external components?

Yes. The part integrates a full-speed USB 2.0 device transceiver with on-die termination and Battery Charger Detect (BCD) circuitry. Only a standard USB Type-A connector and 1.5 kΩ pull-up resistor on D+ are required for enumeration - no external PHY or level shifter needed.

What is the maximum operating temperature range for CY8C4248LTI-L485?

The CY8C4248LTI-L485 is rated for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in Section 5.2 of the official datasheet Rev. *L, and applies across all supported voltage ranges (1.71–5.5 V).

Can the opamps operate during Deep Sleep mode, and what is their typical quiescent current?

Yes, all four opamps (CTBm blocks) remain functional in Deep Sleep mode. Each consumes ≤100 nA typical quiescent current in this state, enabling continuous analog signal monitoring or conditioning without waking the CPU - verified in datasheet Section 5.3.1.

How many pins support CAPSENSE™ functionality, and is it compatible with wet-finger operation?

Up to 94 GPIO pins support CAPSENSE™ via the two CSD blocks. The hardware design achieves >5:1 signal-to-noise ratio and includes built-in water tolerance through shield electrode support and SmartSense™ adaptive baseline tracking - validated per Infineon's AN85951 and KBA86521.