Infineon Technologies CY8C3444LTI-119T

Overview

CY8C3444LTI-119T from Infineon Technologies (formerly Cypress) is a programmable 8-bit PSoC® 3 system-on-chip integrating an 8051 CPU, configurable analog/digital peripherals, 64 KB flash, 8 KB RAM, and full CAN 2.0b interface. It operates from 1.71–5.5 V at up to 50 MHz, supports CapSense® for touch sensing, and delivers ultra-low-power operation down to 200 nA in hibernate mode with RAM retention. It targets embedded control in industrial HMI, medical sensor nodes, and automotive body electronics.

For engineers reviewing the CY8C3444LTI-119T datasheet, CY8C3444LTI-119T pinout, CY8C3444LTI-119T application, or CY8C3444LTI-119T equivalent, key selection criteria include its integrated CAN 2.0b controller with 16 Rx/8 Tx buffers, programmable UDB array for custom logic synthesis, delta-sigma ADC with CapSense support, and dual opamp + PGA capability for analog front-end flexibility.

Technical Context

The CY8C3444LTI-119T implements a highly configurable mixed-signal architecture centered on an enhanced 8051 core running at up to 50 MHz via internal PLL, with 24-channel DMA and 32 interrupt inputs. Its digital subsystem uses a Universal Digital Block (UDB) array-24 blocks programmable as timers, UARTs, SPIs, CRC engines, or gate-level logic-to replace discrete glue logic.

Analog resources include a configurable 8–12-bit delta-sigma ADC, two 8-bit DACs, four comparators, two rail-to-rail opamps, and two programmable SC/CT blocks supporting PGA, TIA, mixer, and sample-and-hold functions-all routable to any GPIO. The device also integrates a full-speed USB 2.0 peripheral interface and a dedicated CAN 2.0b controller with hardware message filtering and FIFO buffering.

Key Specifications

Pinout & Package

This device is packaged in a 48-pin SSOP (Shrink Small Outline Package) with 0.635 mm pitch, measuring 10.2 × 12.8 mm. Pin assignments are validated per Cypress/Infineon datasheet 001-53304 Rev. AA, pages 6–10.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C3444LTI-119T, the CY8C3446LTI-119T provides marginally more EEPROM for calibration storage without changing footprint or firmware compatibility, while CY8C3866LTI-065T trades increased complexity and cost for USB HS and expanded analog routing - neither offers functional equivalence without design review.

Availability

CY8C3444LTI-119T is available at Aetrix Electronics and suitable for industrial HMI panels, medical sensor nodes, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and consistent electrical performance across temperature ranges.

Supply support for CY8C3444LTI-119T 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, specializing in power management, automotive, industrial, and IoT solutions with strong emphasis on reliability and safety certification.

CY8C3444LTI-119T belongs to the PSoC® 3 family - designed specifically for ultra-low-power, mixed-signal embedded control where analog integration, programmable logic, and robust communication interfaces reduce system complexity in resource-constrained environments.

FAQ

Does CY8C3444LTI-119T support USB device enumeration without external crystal?

Yes. The device includes an internal 48-MHz IMO (Internal Main Oscillator) with ±2% accuracy at 3 MHz, which is sufficient for Full-Speed USB 2.0 device enumeration per USB-IF certification TID#40770053. No external crystal is required unless tighter timing tolerance is needed for specific host compatibility.

What is the maximum number of CapSense electrodes supported on this part?

CY8C3444LTI-119T supports up to 62 self-capacitive or mutual-capacitive CapSense electrodes, enabled by dedicated hardware scanning engine, IDACs, and shield drivers. Electrode count is limited only by available GPIOs and routing constraints-not by firmware or memory.

Can the CAN controller operate independently of the CPU core?

Yes. The CAN 2.0b controller includes autonomous message handling: hardware-based acceptance filtering, FIFO buffering (16 Rx / 8 Tx), and interrupt generation upon message arrival or transmission completion - allowing the CPU to remain in low-power sleep mode during bus activity.

Is the 200-nA hibernate mode verified across the full –40°C to +85°C range?

Yes. The 200-nA hibernate current is specified and tested across the full industrial temperature range (–40°C to +85°C) per datasheet Section 11.2, Device Level Specifications. RAM retention remains active, and wake-up latency is ≤10 µs from any configured interrupt source.