Infineon Technologies CY9AF142NBPQC-G-JNE2

Overview

CY9AF142NBPQC-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 serial 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 CY9AF142NBPQC-G-JNE2 datasheet, CY9AF142NBPQC-G-JNE2 pinout, CY9AF142NBPQC-G-JNE2 application, or CY9AF142NBPQC-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 on selected pins, and SWJ-DP debug support without ETM - critical for certified embedded firmware development and BOM continuity planning.

Technical Context

This MCU implements the ARM Cortex-M3 r2p1 core with NVIC supporting 48 peripheral interrupts and 16 priority levels, plus a 24-bit SysTick timer for RTOS scheduling. Its memory subsystem features dual-operation Flash enabling concurrent read-erase-write across upper (240 KB) and lower (16 KB main + 32 KB work) banks, and two independent SRAM blocks (SRAM0 on I/D-code bus, SRAM1 on system bus) for deterministic data access.

The peripheral set includes eight base timers (configurable as PWM/PPG/reload/PWC), dual watchdogs (hardware clocked by 100 kHz CR oscillator, active in all low-power modes except Deep Standby), and a CRC accelerator supporting CCITT CRC16 and IEEE-802.3 CRC32 - optimized for secure boot integrity and communication frame validation in resource-constrained edge 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 32-bit ARM Cortex-M3 microcontroller applications.

Compared with STM32F103VCT6 and RP2040, CY9AF142NBPQC-G-JNE2 uniquely combines dual-bank Flash for fail-safe OTA updates, integrated HDMI-CEC for AV ecosystem interoperability, and hardware UART flow control - making it optimal for industrial gateways and medical devices demanding both functional integration and certification-ready reliability.

Availability

CY9AF142NBPQC-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, home automation hubs, and portable medical diagnostic devices requiring stable component supply and long-term lifecycle support.

Supply support for CY9AF142NBPQC-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 systems, automotive MCUs, and security solutions for industrial and automotive markets.

This part belongs to the FM3 family of 32-bit ARM Cortex-M3 microcontrollers, designed specifically for cost-optimized, low-power embedded control applications requiring rich peripheral integration and robust real-time performance in harsh environments.

FAQ

Does CY9AF142NBPQC-G-JNE2 support in-system programming via UART?

No. This MCU does not support UART-based bootloader programming. Firmware updates require SWJ-DP interface using standard ARM debug tools (e.g., Segger J-Link or ST-Link v2 with SWD adapter). The dual-bank Flash architecture enables safe field updates only when initiated via debug interface or internal application code executing from SRAM.

Is the 5 V-tolerant I/O capability applicable to all GPIO pins?

No. Only specific pins designated in the "Pin Description" section of the datasheet (e.g., P00–P03, P10–P13, P20–P23) are 5 V tolerant. Applying 5 V to non-tolerant pins will damage the device. Always verify pin-specific voltage ratings in Table 16 (I/O Circuit Type) before interfacing with 5 V peripherals.

What is the maximum operating frequency of the main PLL?

The main PLL supports output frequencies up to 80 MHz when driven by the 4–48 MHz main clock, but the CPU core is limited to 40 MHz operation per the datasheet's "Recommended Operating Conditions." Higher PLL outputs may be used for peripheral clocks (e.g., UART baud rate generators), but core execution remains capped at 40 MHz for timing compliance and thermal safety.

Can the RTC retain time during Deep Standby Stop mode?

Yes. In Deep Standby Stop mode, the RTC continues counting using the 32.768 kHz sub-clock oscillator, and its registers remain powered. Timekeeping persists even when VCC is removed, provided the VBAT pin is supplied with ≥1.65 V - enabling uninterrupted calendar functions in battery-backed applications.