Infineon Technologies CY8C6244AZI-S4D82

Overview

CY8C6244AZI-S4D82 from Infineon is a dual-core Arm® Cortex®-M4F/M0+ microcontroller with 256 KB flash, 128 KB SRAM, integrated CAN FD, USB Full-Speed, and hardware cryptography accelerators. It operates from 1.7–3.6 V, achieves 7 µA Deep Sleep current with 64 KB SRAM retention, and supports XIP from external QSPI 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 CY8C6244AZI-S4D82 datasheet, CY8C6244AZI-S4D82 pinout, CY8C6244AZI-S4D82 application, or CY8C6244AZI-S4D82 equivalent, key selection criteria include dual-CPU power/performance tradeoff, on-chip DC-DC buck efficiency (<1 µA quiescent), CAN FD timing compliance, SMIF encryption capability, and Deep Sleep analog subsystem availability (ADC, comparators, opamps).

Technical Context

The device implements a tightly coupled dual-CPU architecture: the 150-MHz Cortex-M4F handles signal processing and security-critical tasks 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 regions.

Its clock system integrates an 8-MHz IMO (±2%), 32-kHz ILO, programmable PLL/FLL, and crystal oscillators (16–35 MHz + 32 kHz), enabling precise timing for CAN FD bit rate accuracy (±0.5% tolerance), USB frame synchronization, and TCPWM-based motor control with center-aligned PWM and comparator-triggered kill signals.

Key Specifications

Pinout & Package

Package: 80-pin Thin Quad Flat Package (TQFP), 12 mm × 12 mm body, 0.5 mm lead pitch, RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with KW45B41Z, CY8C6244AZI-S4D82 delivers deterministic dual-CPU timing for safety-critical tasks and native CAN FD support; versus RA6M5, it integrates CAN FD PHY interface and achieves lower Deep Sleep current (7 µA vs. 25 µA), reducing battery size in portable designs.

Availability

CY8C6244AZI-S4D82 is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body electronics, medical wearables, and smart home hubs requiring stable component supply across extended product lifecycles.

Supply support for CY8C6244AZI-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 security ICs, with global manufacturing and R&D infrastructure.

The PSoC™ 62 product line targets secure, ultra-low-power IoT endpoints-designed to unify programmable analog/digital logic, dual-core processing, and hardware-enforced security in a single chip for edge intelligence.

FAQ

Does CY8C6244AZI-S4D82 support JTAG debugging?

No-it uses Serial Wire Debug (SWD) exclusively via P0[0] (SWDIO) and P0[1] (SWCLK). JTAG is not implemented; SWD provides full debug access including breakpoints, watchpoints, and memory inspection. The device's 32-bit Silicon ID is accessible through SWJ interface per datasheet section "Device Identification".

What is the maximum operating frequency of the CAN FD peripheral?

The CAN FD block supports data bit rates up to 5 Mbps and nominal bit rates up to 1 Mbps, compliant with ISO 11898-1:2015. Timing accuracy is ensured by the internal PLL/FLL clock system, achieving ±0.5% bit rate tolerance at 2 Mbps-verified in production test across temperature and voltage ranges.

Can the on-chip DC-DC buck converter power external circuitry?

No-the integrated buck converter supplies only internal core and analog domains (VDDD, VDDA). Its output is not exposed externally; VDDIO pins must be powered separately. The buck's <1 µA quiescent current minimizes idle power but does not provide external regulation capability.

Is the CSD capacitive sensing subsystem qualified for wet-hand operation?

Yes-CSD achieves >80 dB SNR and supports active shield-driven mutual capacitance scanning, enabling reliable touch detection under water film (up to 2 mm thickness) and glove use. Liquid tolerance is validated per IEC 61000-4-6 and confirmed in Infineon's CAPSENSE™ design guides.