Infineon Technologies CY9AFB44NBPMC-G-JNE2

Overview

CY9AFB44NBPMC-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 LCD controller supporting up to 40×8 segments. It operates at up to 40 MHz, supports six low-power modes including Deep Standby RTC, and targets embedded control in industrial HMI, sensor nodes, and USB-connected peripherals.

For engineers reviewing the CY9AFB44NBPMC-G-JNE2 datasheet, CY9AFB44NBPMC-G-JNE2 pinout, CY9AFB44NBPMC-G-JNE2 application, or CY9AFB44NBPMC-G-JNE2 equivalent, key selection criteria include dual-bank Flash for seamless firmware updates, integrated USB host/device capability without external PHY, 12-bit ADC timing precision, LCD bias voltage generation, and hardware watchdog independence from main clock domain.

Technical Context

The CY9AFB44NBPMC-G-JNE2 implements an ARM Cortex-M3 r2p1 core with NVIC supporting 48 peripheral interrupts and 16 priority levels, coupled with a 24-bit SysTick timer for RTOS scheduling. Its memory subsystem includes two independent SRAM banks (SRAM0 on I/D-code bus, SRAM1 on system bus) and dual-operation Flash enabling concurrent read/erase/write across upper (240 KB) and lower (16 KB + 32 KB work area) banks.

Peripheral integration centers on real-time control: eight base timers support PWM, PPG, reload, and PWC modes; HDMI-CEC and remote control receivers provide consumer IR protocol handling; and the CRC accelerator offloads CCITT CRC16 and IEEE-802.3 CRC32 computation. Clock supervision uses built-in CR oscillators to monitor external clock integrity via Clock Super Visor (CSV).

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 microcontroller applications.

Compared with STM32F103VET6 and RA4M2, the CY9AFB44NBPMC-G-JNE2 delivers unique integration of LCD controller, HDMI-CEC, and dual-bank Flash in a 100-pin LQFP - reducing component count for HMI and IR-centric designs where those peripherals are mandatory.

Availability

CY9AFB44NBPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial HMI panels, USB sensor nodes, consumer IR hubs, and embedded USB host gateways requiring stable component supply across multi-year production cycles.

Supply support for CY9AFB44NBPMC-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 industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.

This device belongs to the FM3 family of 32-bit ARM-based microcontrollers designed specifically for cost-sensitive, low-power embedded control applications requiring rich analog/mixed-signal integration and human interface capabilities.

FAQ

Does CY9AFB44NBPMC-G-JNE2 support USB host mode without external components?

Yes. The device integrates a full-speed USB 2.0 host controller with built-in PLL and transceiver. Only standard USB series resistors (22 Ω) and ESD protection diodes are required on DP/DM lines - no external PHY or clock generator is needed. Host mode supports bulk, interrupt, and isochronous transfers up to 256-byte packets.

What is the maximum resolution and drive capability of the integrated LCD controller?

The LCDC supports up to 40 segment × 8 common outputs with selectable 4-COM or 8-COM mode. It includes internal dividing resistors for bias voltage generation (VV4–VV0), eliminating external resistor networks. Drive capability is rated for standard static and multiplexed STN LCDs operating at 2.2–3.6 V supply.

How does the dual-bank Flash architecture improve firmware reliability?

Dual-bank Flash allows one bank (e.g., upper 240 KB) to run active firmware while the other (lower 16 KB + 32 KB work area) is erased and reprogrammed. This enables atomic firmware updates with zero downtime, critical for unattended industrial equipment where reset-based updates risk data loss or process interruption.

Can the hardware watchdog operate during Deep Standby Stop mode?

No. The hardware watchdog timer is clocked by the built-in low-speed CR oscillator and remains active in Sleep, Timer, RTC, and Stop modes, but is disabled in Deep Standby RTC and Deep Standby Stop modes. In those deepest states, only the RTC and Watch Counter remain functional for wake-up events.