Infineon Technologies CY9AF142LBPMC-G-JNE2

Overview

CY9AF142LBPMC-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), 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 CY9AF142LBPMC-G-JNE2 datasheet, CY9AF142LBPMC-G-JNE2 pinout, CY9AF142LBPMC-G-JNE2 application, or CY9AF142LBPMC-G-JNE2 equivalent, key selection criteria include dual-bank Flash for seamless firmware updates, 5 V-tolerant I/O support on selected pins, hardware flow control absence (per datasheet Rev. *D), and lack of External Bus Interface - critical for embedded control BOM validation and power-aware firmware architecture.

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 (240 KB upper + 16 KB lower bank) enabling concurrent read-while-write, and two independent SRAM banks (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 Sleep/Timer/RTC modes), and CRC accelerator supporting CCITT CRC16 and IEEE-802.3 CRC32 - all coordinated via an 8-channel DMA controller with burst/block/demand transfer modes and 32-bit addressing.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3. Pin functions validated per CY9A140NB Series datasheet Rev. *D, pages 9–15 (Pin Assignment) and 16–38 (List of Pin Functions).

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, CY9AF142LBPMC-G-JNE2 delivers unique value in AV control and ultra-low-power sensor edge nodes through its hardware-accelerated CEC engine, dual-bank Flash update capability, and sub-µA RTC standby - features not replicated in either alternative without added components or firmware complexity.

Availability

CY9AF142LBPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, home automation gateways, and industrial HMI panels requiring stable component supply across multi-year production cycles.

Supply support for CY9AF142LBPMC-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 - with annual revenue exceeding €14 billion.

This device belongs to the FM3 family of 32-bit ARM Cortex-M3 microcontrollers, designed specifically for cost-sensitive, low-power embedded control applications demanding rich analog integration, real-time responsiveness, and long-term supply stability in industrial and consumer systems.

FAQ

Does CY9AF142LBPMC-G-JNE2 support hardware flow control on UART?

No. According to the official CY9A140NB Series datasheet Rev. *D (page 2), CY9AF142LBPMC-G-JNE2 explicitly does not support hardware flow control (CTS/RTS), unlike some higher-pin-count variants in the same family. Software-based flow control or external logic must be used for high-throughput serial communication.

What is the maximum operating frequency and voltage range?

The CY9AF142LBPMC-G-JNE2 operates at up to 40 MHz across a supply voltage range of 1.65 V to 3.6 V, as specified in Section 12.2 (Recommended Operating Conditions) of the datasheet. This allows direct interfacing with 3.3 V logic and compatibility with single-cell Li-ion batteries down to 1.65 V under load.

Is External Bus Interface available on this part?

No. The datasheet clearly states that CY9AF142LBPMC-G-JNE2 - along with CY9AF141LB and CY9AF144LB - does not support the External Bus Interface (EBI). All memory expansion must be handled via SPI, I²C, or internal Flash/SRAM; no parallel NOR/SRAM interfacing is possible.

How many I/O pins are 5 V tolerant?

Selected GPIO pins are 5 V tolerant, as confirmed in the "I/O Circuit Type" section (page 39) and pin function tables (pages 16–38) of the datasheet. Specifically, pins marked "Type D" in the I/O circuit classification support 5 V tolerance - including P00–P07, P10–P17, and P20–P27 - enabling direct connection to legacy 5 V peripherals without level shifters.