Infineon Technologies CY9AFB41MBPMC1-G-JNE2

Overview

CY9AFB41MBPMC1-G-JNE2 from Infineon Technologies (formerly Cypress) is a 32-bit ARM® Cortex®-M3 microcontroller with 256 KB dual-bank Flash, 32 KB SRAM, USB 2.0 Full-Speed device/host interface, 12-bit ADC (24 channels), and LCD controller (40×8 SEG/COM). It operates at up to 40 MHz, supports six low-power modes, and targets embedded control in industrial HMI, metering, and appliance interfaces.

For engineers reviewing the CY9AFB41MBPMC1-G-JNE2 datasheet, CY9AFB41MBPMC1-G-JNE2 pinout, CY9AFB41MBPMC1-G-JNE2 application, or CY9AFB41MBPMC1-G-JNE2 equivalent, key selection criteria include dual-bank Flash for seamless firmware updates, integrated USB host/device capability, 5 V-tolerant GPIOs on select pins, RTC with leap-year support, and hardware CRC acceleration for data integrity in field-deployed systems.

Technical Context

This MCU implements the ARM Cortex-M3 r2p1 core with NVIC supporting 48 peripheral interrupts and 16 priority levels. It integrates dual-bank Flash enabling concurrent read-while-write operations-critical for over-the-air (OTA) update reliability without halting execution.

The peripheral set includes a full-featured USB 2.0 transceiver with built-in PLL, an LCD controller supporting 40 SEG × 8 COM with internal bias resistors, and two independent 12-bit ADC units with 2.0 μs conversion time and FIFO-based scanning-optimized for real-time sensor acquisition in battery-powered devices.

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 microcontroller applications.

Compared with STM32F103VET6 and RA4M1, CY9AFB41MBPMC1-G-JNE2 uniquely combines dual-bank Flash, USB device/host, and integrated LCD controller in a single 100-pin LQFP package-reducing system-level component count and PCB area for cost-sensitive embedded HMI applications.

Availability

CY9AFB41MBPMC1-G-JNE2 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, home appliance control units, and programmable logic controller I/O modules requiring stable component supply across multi-year production cycles.

Supply support for CY9AFB41MBPMC1-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 global semiconductor leader headquartered in Munich, Germany, delivering power systems, microcontrollers, sensors, and security solutions for automotive, industrial, and IoT markets.

CY9AFB41MBPMC1-G-JNE2 belongs to the FM3 family of 32-bit ARM Cortex-M3 microcontrollers, designed specifically for cost-optimized, low-power embedded control applications requiring rich analog integration, human-machine interface support, and field-upgradable firmware.

FAQ

What power supply configurations are required for USB and LCD operation?

CY9AFB41MBPMC1-G-JNE2 requires VCC = 3.0–3.6 V when USB is active and VCC = 2.2–3.6 V when the LCD controller is enabled. These ranges are non-overlapping only below 3.0 V; therefore, simultaneous USB and LCD operation mandates VCC ≥ 3.0 V. The device supports single-rail operation-no separate analog or USB IO supply is needed.

Does this MCU support true hardware USB host functionality without external PHY?

Yes. CY9AFB41MBPMC1-G-JNE2 integrates a full-speed USB 2.0 transceiver with built-in PLL and endpoint buffers. It supports USB host mode-including automatic device connect/disconnect detection, IN/OUT token handshake, and 256-byte packet handling-without requiring an external PHY or companion IC.

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

The dual-bank Flash (240 KB upper + 16 KB lower) allows erasing and programming one bank while executing code from the other. This enables atomic, fail-safe firmware updates: if power loss occurs mid-update, the prior valid image remains intact and executable upon reset-eliminating bricking risk in unattended deployments.

Can the LCD controller drive standard character or graphic LCD modules?

Yes. The integrated LCDC supports static, 2-mux, and 4-mux LCD panels up to 40 segments × 8 commons. It provides internal voltage dividers for bias generation and direct drive of common-anode or common-cathode displays-compatible with standard 16×2 character modules (using 16 SEG × 2 COM) and custom graphic panels up to 320 pixels.