Infineon Technologies CY8C6244LQI-S4D12

Overview

CY8C6244LQI-S4D12 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 acceleration. It operates from 1.7–3.6 V, achieves 7 µA Deep Sleep current with 64 KB SRAM retention, and targets secure, low-power IoT edge nodes requiring real-time sensor fusion and wireless coexistence.

For engineers reviewing the CY8C6244LQI-S4D12 datasheet, CY8C6244LQI-S4D12 pinout, CY8C6244LQI-S4D12 application, or CY8C6244LQI-S4D12 equivalent, key selection criteria include dual-CPU power/performance trade-off, on-chip DC-DC buck efficiency below 1 µA quiescent current, QSPI XIP with on-the-fly encryption, and hardware-accelerated AES/SHA/TRNG for secure firmware updates.

Technical Context

The device integrates two independent CPU subsystems: a 150-MHz Cortex-M4F with FPU and MPU for application processing, and a 100-MHz Cortex-M0+ for real-time control and low-power background tasks. Inter-processor communication (IPC) enables synchronized task partitioning and secure context isolation across eight protection contexts.

Its programmable analog subsystem includes two 12-bit 2-Msps SAR ADCs with synchronized sampling and Deep Sleep operation, one 12-bit DAC with <2-µs settling time, two opamps, and two low-power comparators - all functional in Deep Sleep mode to support always-on sensing without wake-up latency.

Key Specifications

Pinout & Package

This device is housed in an 80-pin TQFP package (LQI suffix), with 62 GPIOs including six Smart I/O pins supporting Boolean operations in Deep Sleep, two overvoltage-tolerant (OVT) pins, and dedicated JTAG/SWJ debug interface pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32WB55RGV6 and LPC55S69JBD100, CY8C6244LQI-S4D12 uniquely combines dual-application CPU performance, sub-10 µA Deep Sleep with full analog operation, CAN FD + USB + QSPI encryption, and hardware crypto - making it optimal for resource-constrained, multi-interface IoT edge controllers.

Availability

CY8C6244LQI-S4D12 is available at Aetrix Electronics and suitable for industrial sensor nodes, secure wireless gateways, capacitive touch HMIs, and automotive body control modules requiring stable component supply across long-lifecycle deployments.

Supply support for CY8C6244LQI-S4D12 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 ICs, and secure microcontrollers, with global R&D and manufacturing infrastructure.

The PSOC™ 62 product line delivers programmable, ultra-low-power, and security-hardened MCUs for IoT endpoints - integrating analog, digital, and radio-adjacent peripherals into a single chip to reduce system complexity and bill-of-materials cost.

FAQ

What is the maximum operating frequency of each CPU core in the CY8C6244LQI-S4D12?

The CY8C6244LQI-S4D12 features a 150-MHz Arm Cortex-M4F core with floating-point unit and memory protection unit, and a 100-MHz Cortex-M0+ core with single-cycle multiply and MPU. Both cores operate independently with separate clock trees and voltage domains, enabling concurrent real-time and application-level processing without contention.

Does this MCU support hardware-accelerated cryptographic operations, and which algorithms are implemented?

Yes, the CY8C6244LQI-S4D12 includes a dedicated cryptography accelerator supporting AES-128/256 (ECB/CBC/CTR/GCM), SHA-1/256, ECC P-256, and true random number generation (TRNG). These functions execute in hardware without CPU intervention, reducing latency and eliminating software-based side-channel vulnerabilities in secure boot and TLS operations.

Can the device perform analog-to-digital conversion while in Deep Sleep mode?

Yes, both 12-bit SAR ADCs operate fully in Deep Sleep mode with synchronized sampling, 16-channel sequencer, and result averaging. The ADCs retain configuration and can trigger interrupts or DMA transfers upon completion - enabling continuous sensor monitoring at 7 µA system current without waking the CPU cores.

What package type and pin count does the CY8C6244LQI-S4D12 use, and are there thermal or layout considerations?

The CY8C6244LQI-S4D12 uses an 80-pin TQFP (Thin Quad Flat Package) with 0.5-mm pitch and exposed thermal pad. Layout requires solid ground plane beneath the pad, symmetric thermal vias (≥6 × 0.3-mm), and strict separation between analog (VDDA/VSSA) and digital (VDDD/VSSD) power domains to maintain ADC/DAC accuracy and noise immunity.