Infineon Technologies CY9AF142NBPMC-G-JNE2

Overview

CY9AF142NBPMC-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), and operation up to 40 MHz. It integrates UART/CSIO/I²C interfaces, 24-channel 12-bit ADC (2.0 µs conversion), 8-channel DMA, 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 CY9AF142NBPMC-G-JNE2 datasheet, CY9AF142NBPMC-G-JNE2 pinout, CY9AF142NBPMC-G-JNE2 application, or CY9AF142NBPMC-G-JNE2 equivalent, key selection criteria include dual-bank Flash for safe firmware updates, hardware flow control on UART ch.4, 5 V-tolerant GPIO support, and SWJ-DP debug interface compatibility with ARM CoreSight tools.

Technical Context

This MCU implements the ARMv7-M architecture (r2p1) with NVIC supporting 48 peripheral interrupts and 16 priority levels. Its memory subsystem separates instruction (I-code) and data (D-code) paths via SRAM0, while SRAM1 serves system bus peripherals - enabling concurrent CPU and DMA access without contention.

The dual-operation Flash supports simultaneous read-erase-write across upper (240 KB) and lower (16 KB main + 32 KB work) banks, enabling background firmware updates. Peripheral timing is synchronized to multiple clock domains: main clock (4–48 MHz), sub-clock (32.768 kHz), and two CR oscillators (4 MHz / 100 kHz), managed by Clock Supervisor (CSV) and Low-Voltage Detector (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 RP2040, CY9AF142NBPMC-G-JNE2 uniquely combines dual-bank Flash safety, HDMI-CEC/IR integration, and certified low-power modes - making it optimal for industrial edge devices requiring firmware resilience and consumer protocol compatibility.

Availability

CY9AF142NBPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, home automation hubs, and medical sensor nodes requiring stable component supply across extended product lifecycles.

Supply support for CY9AF142NBPMC-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 security solutions - with global manufacturing, quality certification (IATF 16949, ISO 9001), and long-term product support.

This device belongs to the FM3 family of general-purpose 32-bit microcontrollers designed for cost-sensitive industrial and consumer applications demanding robust real-time performance, low-power operation, and integrated analog/mixed-signal peripherals.

FAQ

What debug interfaces does CY9AF142NBPMC-G-JNE2 support?

It supports Serial Wire JTAG Debug Port (SWJ-DP), combining JTAG and SWD protocols on shared pins. This eliminates the need for separate debug headers and enables full-core debugging, breakpoint setting, and memory inspection using standard ARM CoreSight tools like Keil µVision or SEGGER J-Link - without requiring external trace buffers.

Does CY9AF142NBPMC-G-JNE2 support external memory expansion?

No - unlike earlier FM3 variants (e.g., CY9AF141LB), this part omits the External Bus Interface. It relies solely on on-chip 256 KB Flash and 32 KB SRAM. Designers requiring external NOR Flash or SRAM must use alternative FM3 models or implement SPI/XIP-based expansion with external memory controllers.

How is the dual-bank Flash structured and used in practice?

The Flash comprises an upper bank (240 KB) and lower bank (16 KB main + 32 KB work area). During firmware update, new code writes to the inactive bank while the active bank continues execution. Bank switching occurs via register-controlled boot vector redirection - enabling zero-downtime updates verified by CRC accelerator before activation.

Which pins are 5 V tolerant and how is that confirmed?

Pins designated as "5 V tolerant" are explicitly listed in Section 5 ("I/O Circuit Type") of the datasheet (Rev. *D, p.39) and include specific ports such as P00–P07, P10–P17, and P20–P27. Tolerance is achieved via internal clamping diodes and verified under DC characteristics (Section 12.3.2), allowing direct interfacing with 5 V logic without level shifters.