Infineon Technologies CY9AFB41MBPMC-G-JNE2

Overview

CY9AFB41MBPMC-G-JNE2 from Infineon Technologies (formerly Cypress) is a 32-bit ARM® Cortex®-M3 microcontroller with 256 KB dual-bank Flash, 32 KB on-chip SRAM (16 KB SRAM0 + 16 KB SRAM1), USB 2.0 Full-Speed device/host interface, and integrated LCD controller supporting up to 40×8 segment-combination drive - deployed in industrial HMI panels requiring low-power operation and real-time peripheral control.

For engineers reviewing the CY9AFB41MBPMC-G-JNE2 datasheet, CY9AFB41MBPMC-G-JNE2 pinout, CY9AFB41MBPMC-G-JNE2 application, or CY9AFB41MBPMC-G-JNE2 equivalent, key selection criteria include dual-bank Flash for seamless firmware updates, USB host/device dual-role capability, 24-channel 12-bit ADC with 2.0 µs conversion time, RTC with leap-year support, and six low-power modes including Deep Standby RTC with RAM retention.

Technical Context

This MCU implements the ARM Cortex-M3 r2p1 core at up to 40 MHz, with an integrated Nested Vectored Interrupt Controller (NVIC) supporting 48 peripheral interrupts across 16 priority levels and a 24-bit SysTick timer for RTOS scheduling. It features dual-bus SRAM architecture: SRAM0 (I-code/D-code bus) and SRAM1 (system bus), enabling concurrent CPU and DMA access.

The peripheral set includes an 8-channel DMA controller with byte/half-word/word transfer support, HDMI-CEC/remote control receiver (2 channels), and a CRC accelerator supporting CCITT CRC16 and IEEE-802.3 CRC32 - all clocked from a flexible multi-source clock system (external oscillators, built-in CR clocks, and Main PLL) with Clock Supervision (CSV) and dual-stage Low-Voltage Detection (LVD1/LVD2).

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit ARM Cortex-M3 microcontroller applications.

Compared with STM32F103VCT6 and RA4M1, CY9AFB41MBPMC-G-JNE2 uniquely integrates LCD controller, USB host/device, and HDMI-CEC in a single die - reducing component count and PCB area in cost-sensitive industrial HMI and appliance control designs.

Availability

CY9AFB41MBPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, USB-capable gateways, and appliance remote control hubs requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.

Supply support for CY9AFB41MBPMC-G-JNE2 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 leader specializing in power management, automotive MCUs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.

This part belongs to the FM3 family of high-integration 32-bit microcontrollers designed specifically for cost-sensitive, low-power industrial and consumer control applications - emphasizing peripheral richness, Flash flexibility, and mixed-signal integration.

FAQ

Does CY9AFB41MBPMC-G-JNE2 support USB host functionality without external PHY?

Yes. The device integrates a full-speed USB 2.0 transceiver with internal termination and clock recovery circuitry. It supports both device and host roles using only the USB_DP/USB_DM pins and standard 1.5 kΩ pull-up on DP for device mode or DP pull-down for host mode - no external PHY or level-shifting components required.

What is the maximum operating voltage range when using the LCD controller?

The LCD controller requires VCC between 2.2 V and 3.6 V. Operation below 2.2 V disables LCDC functionality, though core MCU operation remains valid down to 1.65 V. This voltage constraint applies specifically when driving LCD segments; the device must be powered within this window to enable bias generation and segment drive capability.

How does the dual-bank Flash architecture improve firmware reliability?

Dual-bank Flash allows independent erase and write operations on upper (240 KB) and lower (16 KB) banks. During OTA updates, application code runs from one bank while new firmware is written to the other - preventing execution interruption and enabling atomic swap on reset. This eliminates risk of bricking during power loss mid-update.

Is the 41-bit Unique ID accessible via standard debug interface?

Yes. The 41-bit factory-programmed unique identifier is mapped into the system memory space at address 0x000001FC and readable via SWJ-DP debug port or standard memory-mapped reads during runtime - usable for license binding, device authentication, or secure boot key derivation without additional hardware.