Infineon Technologies CY9AF342LBPMC1-G-JNE2

Overview

CY9AF342LBPMC1-G-JNE2 from Infineon Technologies (formerly Cypress) is a 32-bit ARM® Cortex®-M3 microcontroller with 256 KB dual-bank Flash, 32 KB SRAM, USB 2.0 Full-Speed device/host interface, 24-channel 12-bit ADC (2.0 μs conversion), and support for six low-power modes including Deep Standby RTC. It targets embedded motor control and industrial sensor nodes requiring real-time responsiveness and power efficiency.

For engineers reviewing the CY9AF342LBPMC1-G-JNE2 datasheet, CY9AF342LBPMC1-G-JNE2 pinout, CY9AF342LBPMC1-G-JNE2 application, or CY9AF342LBPMC1-G-JNE2 equivalent, key selection criteria include dual-bank Flash update capability, USB host/device coexistence, hardware flow control on UART ch.4, HDMI-CEC/remote receiver integration, and 1.65–3.6 V wide-voltage operation with LVD1/LVD2 monitoring.

Technical Context

This MCU implements an ARM Cortex-M3 r2p1 core running at up to 40 MHz with integrated NVIC (48 peripheral interrupts + 1 NMI), SysTick timer, and dual-bus SRAM architecture (16 KB SRAM0 on I/D-code bus, 16 KB SRAM1 on system bus). It excludes External Bus Interface and hardware flow control-confirmed exclusions per datasheet Rev. *D.

The clock system supports five sources: main oscillator (4–48 MHz), sub-clock (32.768 kHz), high-speed CR (4 MHz), low-speed CR (100 kHz), and Main PLL. USB clock generation uses internal PLL multiplication of the main clock; USB device supports six endpoints with double buffering and configurable transfer types (Bulk/Interrupt/Isochronous), while USB host supports full/low-speed with automatic token handshake and wake-up.

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, CY9AF342LBPMC1-G-JNE2 uniquely integrates USB device+host, HDMI-CEC transmitter/receiver, and remote control receiver in a single die - reducing BOM count and PCB area for consumer electronics and industrial HMI designs.

Availability

CY9AF342LBPMC1-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor control, smart home sensor hubs, HDMI-CEC AV equipment, and USB peripheral emulation requiring stable component supply and long-term lifecycle support.

Supply support for CY9AF342LBPMC1-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 manufacturing and R&D infrastructure.

This part belongs to the FM3 family of 32-bit ARM Cortex-M3 microcontrollers, designed specifically for cost-sensitive, low-power embedded applications requiring rich analog/peripheral integration and robust real-time performance in industrial and consumer electronics.

FAQ

Does CY9AF342LBPMC1-G-JNE2 support USB host functionality?

Yes, it supports USB 2.0 Full-Speed and Low-Speed host mode with automatic IN/OUT token handshake, up to 256-byte packet length, and wake-up from suspend. The built-in USB PLL generates the required 48 MHz clock from the main oscillator, eliminating need for external crystal.

What low-power modes retain RAM content?

Deep Standby RTC and Deep Standby Stop modes both support optional RAM retention. When enabled, SRAM contents remain intact during these modes; retention is controlled by dedicated registers and requires VCC supply to be maintained above 1.65 V.

Is hardware flow control available on all UART channels?

No - hardware flow control (CTS/RTS) is supported only on UART channel 4, as explicitly stated in the datasheet Rev. *D. Channels 0–3 and 5–7 lack RTS/CTS signal routing and associated control logic.

Can the CRC accelerator compute custom polynomials?

No - the hardware CRC accelerator supports only two fixed polynomials: CCITT CRC16 (0x1021) and IEEE-802.3 CRC32 (0x04C11DB7). Custom polynomial configuration is not implemented in this silicon revision.