Infineon Technologies CY8C6244LQI-S4D82

Overview

CY8C6244LQI-S4D82 from Infineon is a dual-core Arm® Cortex®-M4F/M0+ PSOC™ 62 microcontroller with 256-KB flash, 128-KB SRAM, integrated CAN FD, USB Full-Speed, and hardware cryptography accelerators. It operates from 1.7 V to 3.6 V, achieves 7 µA Deep Sleep current with 64-KB SRAM retention, and supports XIP from external Quad-SPI Flash at up to 320 Mbps-enabling secure, low-power IoT edge nodes with real-time sensor fusion and wireless coexistence.

For engineers reviewing the CY8C6244LQI-S4D82 datasheet, CY8C6244LQI-S4D82 pinout, CY8C6244LQI-S4D82 application, or CY8C6244LQI-S4D82 equivalent, key selection criteria include dual-CPU power/performance tradeoff, on-chip DC-DC quiescent current (<1 µA), CAN FD timing compliance, SMIF encryption capability, and Smart I/O Boolean logic availability in System Deep Sleep mode.

Technical Context

The device implements a tightly coupled dual-CPU subsystem: the 150-MHz Cortex-M4F handles compute-intensive tasks (e.g., sensor fusion, crypto operations) with FPU and MPU, while the 100-MHz Cortex-M0+ manages real-time peripherals and low-power state coordination. Inter-processor communication uses hardware IPC channels with doorbell interrupts and shared memory.

Clock architecture integrates multiple independent sources: an 8-MHz IMO (±2%), 32-kHz ILO, programmable crystal oscillators (16–35 MHz and 32 kHz), plus PLL and FLL for frequency synthesis. The SMIF controller enables encrypted Execute-In-Place with 4-KB cache, and the CAN FD block supports data rates up to 5 Mbps with ISO 11898-1:2015 compliance.

Key Specifications

Pinout & Package

80-pin Thin Quad Flat Package (TQFP) with exposed thermal pad, 12 mm × 12 mm body, 0.5-mm pitch, and standard JEDEC MO-137AC footprint. Pin functions validated per Infineon CY8C62x4 Datasheet Rev. *O, Section 4 "Pinouts".

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-core secure MCU applications.

Compared with CY8C6244LQI-S4D82, CY8C6247LQI-D52 trades CAN FD for expanded memory and USB flexibility, while STM32H743VIT6 delivers raw M7 throughput at the expense of integrated low-power analog, secure boot depth, and peripheral-level power gating.

Availability

CY8C6244LQI-S4D82 is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body control modules, medical wearables, and smart home hubs requiring stable component supply, long-term lifecycle assurance, and qualified traceable sourcing.

Supply support for CY8C6244LQI-S4D82 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 secure embedded solutions, with global R&D centers and ISO/TS 16949-certified manufacturing.

The PSOC™ 62 product line targets secure, ultra-low-power IoT endpoints-designed to unify sensing, connectivity (CAN FD/USB/BLE-ready), and trusted execution in a single chip for battery-operated and safety-aware edge devices.

FAQ

What is the maximum operating frequency of the Cortex-M4F core in CY8C6244LQI-S4D82?

The Arm Cortex-M4F core operates at up to 150 MHz, verified under 1.7–3.6 V supply and ambient temperatures from –40 °C to +85 °C per Infineon's electrical specifications. This frequency is sustained using the on-chip PLL driven by the 8-MHz IMO or an external crystal, with voltage scaling configured for 1.1 V core operation.

Does CY8C6244LQI-S4D82 support hardware-based AES encryption acceleration?

Yes-it includes a dedicated cryptography accelerator supporting AES-128/192/256 (ECB/CBC/CTR/GCM), SHA-1/224/256, RSA up to 4096 bits, ECC with NIST P-256/P-384, and true random number generation (TRNG). These functions operate independently of CPU cores and are accessible via PSoC Creator or ModusToolbox™ HAL APIs.

Can the CAN FD peripheral achieve 5 Mbps data rate with this part?

Yes-the integrated CAN FD controller complies with ISO 11898-1:2015 and supports bit rates up to 5 Mbps in the data phase when paired with a compatible physical transceiver (e.g., TJA1042T/3). Timing parameters-including sample point, propagation delay, and synchronization jump width-are programmable via the CAN FD configuration registers.

Is the 80-pin TQFP package RoHS-compliant and lead-free?

Yes-the CY8C6244LQI-S4D82 uses a lead-free, RoHS-compliant 80-pin TQFP package (JEDEC MO-137AC), with SnAgCu (SAC305) solder finish and moisture sensitivity level (MSL) 3. Reflow profile follows IPC/JEDEC J-STD-020D.2, peak temperature 260 °C max.