Infineon Technologies CY9AFA41MBPMC1-G-JNE2

Overview

CY9AFA41MBPMC1-G-JNE2 from Infineon Technologies (formerly Cypress) is a 32-bit ARM® Cortex®-M3 microcontroller with 256 KB dual-bank Flash, 32 KB SRAM (16 KB SRAM0 + 16 KB SRAM1), 40 MHz max CPU frequency, and integrated LCD controller supporting up to 40 SEG × 8 COM. It targets embedded control in industrial HMI, smart appliances, and low-power metering systems requiring on-chip peripherals including UART/CSIO/I²C, 24-channel 12-bit ADC, RTC, and hardware watchdog.

For engineers reviewing the CY9AFA41MBPMC1-G-JNE2 datasheet, CY9AFA41MBPMC1-G-JNE2 pinout, CY9AFA41MBPMC1-G-JNE2 application, or CY9AFA41MBPMC1-G-JNE2 equivalent, key selection criteria include dual-bank Flash for seamless firmware updates, 5 V-tolerant GPIOs on select pins, sub-3.6 V operation down to 1.65 V, and SWJ-DP debug interface compatibility with standard ARM toolchains.

Technical Context

This MCU implements the ARMv7-M architecture (Cortex-M3 r2p1) with NVIC supporting 48 peripheral interrupts and 16 priority levels, plus a 24-bit SysTick timer for RTOS scheduling. Its memory subsystem features independent I-code/D-code buses for SRAM0 and system bus for SRAM1, enabling concurrent instruction fetch and data access.

The peripheral set includes an 8-channel DMA controller with 32-bit addressing, HDMI-CEC transceiver with automatic ACK generation, and dual watchdogs - one clocked by the 100 kHz CR oscillator for deep-sleep reliability. Clock supervision uses internal CR oscillators to detect external clock failure or frequency anomaly, triggering reset or interrupt.

Key Specifications

Pinout & Package

CY9AFA41MBPMC1-G-JNE2 is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the FM3 Peripheral Manual TYPE6 configuration and include dedicated LCD segment/com drivers, dual crystal inputs (XIN/XOUT, XIN32/XOUT32), and 83 fast GPIOs - 24 of which are 5 V tolerant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32F103VCT6 and RA4M1, CY9AFA41MBPMC1-G-JNE2 uniquely integrates LCD controller and HDMI-CEC transceiver in a 100-pin LQFP, reducing BOM count and PCB area for cost-sensitive HMI and consumer electronics control applications.

Availability

CY9AFA41MBPMC1-G-JNE2 is available at Aetrix Electronics and suitable for smart appliance control panels, industrial metering display units, and home automation gateways requiring stable component supply, long-term lifecycle support, and qualified automotive/industrial grade sourcing.

Supply support for CY9AFA41MBPMC1-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 manufacturer specializing in power management, automotive MCUs, and security solutions, with global R&D and manufacturing infrastructure.

This part belongs to the FM3 family of 32-bit ARM Cortex-M3 microcontrollers, designed specifically for cost-optimized, low-power embedded control in white goods, industrial HMIs, and metering applications with integrated analog and display peripherals.

FAQ

What is the maximum operating frequency and supported voltage range for CY9AFA41MBPMC1-G-JNE2?

The CY9AFA41MBPMC1-G-JNE2 operates at up to 40 MHz and supports a supply voltage range of 1.65 V to 3.6 V. When the LCD controller is active, the minimum voltage increases to 2.2 V. These ratings are validated across industrial temperature ranges (–40 °C to +85 °C) and specified in the Absolute Maximum Ratings and Recommended Operating Conditions sections of Rev. *D datasheet.

Does this MCU support in-system programming and secure firmware updates?

Yes - its dual-bank Flash architecture allows one bank to run application code while the other is erased and reprogrammed via UART, CSIO, or I²C interfaces. Code protection is enforced through Flash security bits that disable read-out and debug access after programming, preventing unauthorized firmware extraction.

Which debug interface does CY9AFA41MBPMC1-G-JNE2 use, and is JTAG supported?

The device uses Serial Wire JTAG Debug Port (SWJ-DP), which combines SWD and JTAG signals on shared pins. Full JTAG functionality is not implemented; only SWD mode is supported per the FM3 Peripheral Manual. Standard ARM debug tools (e.g., Segger J-Link, ST-Link v3) work via SWD protocol without requiring dedicated TDI/TDO pins.

Can the LCD controller drive custom glass or only standard modules?

The LCDC supports both custom and standard segmented LCDs - it provides programmable bias voltage (VV0–VV4), adjustable frame frequency, and software-configurable COM/SEG mapping. The 40×8 mux capability and internal resistor ladder allow direct connection to custom glass without external bias generators, provided segment capacitance and voltage requirements fall within datasheet limits (≤ 100 nF per segment, ≤ 15 V peak-to-peak).