Infineon Technologies CY9AF141MBPMC1-G-JNE2

Overview

CY9AF141MBPMC1-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), and operation up to 40 MHz. It integrates UART/CSIO/I²C interfaces, 24-channel 12-bit ADC (2.0 µs conversion), RTC, HDMI-CEC, and six low-power modes - deployed in industrial motor control and smart sensor nodes requiring deterministic real-time response.

For engineers reviewing the CY9AF141MBPMC1-G-JNE2 datasheet, CY9AF141MBPMC1-G-JNE2 pinout, CY9AF141MBPMC1-G-JNE2 application, or CY9AF141MBPMC1-G-JNE2 equivalent, key selection criteria include dual-bank Flash for seamless firmware updates, hardware flow control on UART ch.4, 5 V-tolerant I/O support on selected pins, 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, base timers configurable as PWM/PPG/reload/PWC, and dual watchdogs - one hardware-based (low-speed CR oscillator) active in all low-power modes except Deep Standby RTC/Stop, ensuring robust fail-safe operation in battery-powered systems.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level MSL3.

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 RP2040, CY9AF141MBPMC1-G-JNE2 uniquely combines dual-bank Flash for safe OTA updates, integrated HDMI-CEC transceiver, and hardware UART flow control - making it optimal for consumer electronics and industrial edge controllers demanding protocol offload and field-upgrade resilience.

Availability

CY9AF141MBPMC1-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor control, smart home sensor hubs, energy metering terminals, and HDMI-CEC-controlled AV accessories requiring stable component supply across multi-year production cycles.

Supply support for CY9AF141MBPMC1-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, specializing in power management, automotive MCUs, and security solutions.

This device belongs to the FM3 family of 32-bit ARM Cortex-M3 microcontrollers, designed specifically for cost-sensitive, low-power embedded control applications in industrial automation, consumer electronics, and smart infrastructure.

FAQ

What debug interface does CY9AF141MBPMC1-G-JNE2 support?

It supports Serial Wire JTAG Debug Port (SWJ-DP) only - no Embedded Trace Macrocell (ETM) support per datasheet Rev. *D. This interface is fully compatible with standard ARM Cortex-M debug tools including ST-Link, J-Link, and CMSIS-DAP adapters, enabling breakpoints, register inspection, and flash programming without requiring additional trace hardware.

Does CY9AF141MBPMC1-G-JNE2 support external memory expansion?

No - unlike other members of the CY9A140NB series (e.g., CY9AF142LB), this variant (CY9AF141MB) explicitly omits the External Bus Interface. Its memory subsystem relies solely on on-chip Flash and SRAM, simplifying PCB layout and reducing system cost for applications not requiring NOR Flash or SRAM expansion.

What is the maximum ADC sampling rate achievable?

With 2.0 µs conversion time per 12-bit sample, the theoretical maximum sustained sampling rate is 500 kSPS. However, practical throughput depends on FIFO depth (16-step for scan mode), DMA configuration, and interrupt latency - typical real-world implementation achieves ~300 kSPS when using DMA-driven continuous scan across 8–12 channels.

Is hardware flow control available on all UART channels?

No - hardware flow control (CTS/RTS) is supported exclusively on UART channel 4, as confirmed in the peripheral feature table. Channels 0–3 and 5–7 operate in standard UART mode only. This selective implementation reduces gate count while preserving critical handshaking capability where high-reliability serial links are required.