Infineon Technologies CY9AFA44NBPMC-G-JNE2

Overview

CY9AFA44NBPMC-G-JNE2 from Infineon Technologies (formerly Cypress) is a 32-bit ARM® Cortex®-M3 microcontroller with dual-bank flash (240 KB + 16 KB), 32 KB on-chip SRAM (16 KB SRAM0 + 16 KB SRAM1), and integrated LCD controller supporting up to 40 SEG × 8 COM. It operates at up to 40 MHz, features 24-channel 12-bit ADC (2.0 μs conversion), 8-channel DMA, and six low-power modes including Deep Standby RTC. Used in industrial HMI panels requiring integrated display driving and real-time sensor processing.

For engineers reviewing the CY9AFA44NBPMC-G-JNE2 datasheet, CY9AFA44NBPMC-G-JNE2 pinout, CY9AFA44NBPMC-G-JNE2 application, or CY9AFA44NBPMC-G-JNE2 equivalent, key selection criteria include dual-operation flash architecture for seamless firmware updates, 5 V-tolerant GPIO support for legacy interface compatibility, HDMI-CEC/remote control receiver integration for consumer electronics remote handling, and sub-3.6 V operation enabling battery-powered portable HMIs.

Technical Context

This MCU implements an 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 includes dual-bank Flash enabling concurrent read-while-write operations and two independent SRAM banks (SRAM0 on I/D-code bus, SRAM1 on system bus) for deterministic code/data separation.

The peripheral set targets embedded HMI and control applications: LCDC with internal bias resistors and blinking control, 8-channel Base Timer supporting PWM/PPG/reload modes, and dual watchdogs - one hardware-based on 100 kHz CR oscillator for deep-sleep supervision, and one software-configurable.

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 CY9AA40NBPMC-G-JNE2, the CY9AA40NB variant offers reduced Flash (128 KB) but identical peripherals and power profile - suitable for cost-sensitive designs without dual-bank requirements; MB9BF506R lacks LCDC entirely, shifting display responsibility to external components and increasing BOM complexity.

Availability

CY9AFA44NBPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial HMI panels, smart appliance controllers, energy meter display units, and portable medical monitors requiring stable component supply and long-term lifecycle support.

Supply support for CY9AFA44NBPMC-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 strong industrial and IoT focus.

This device belongs to the FM3 family of 32-bit ARM Cortex-M3 microcontrollers, designed specifically for cost-optimized, low-power embedded control applications with integrated human-machine interface capabilities including LCD driving and remote control protocol acceleration.

FAQ

What is the maximum operating frequency and supported clock sources?

The CY9AFA44NBPMC-G-JNE2 operates at up to 40 MHz using five selectable clock sources: two external oscillators (4–48 MHz main clock, 32.768 kHz sub-clock), two built-in CR oscillators (4 MHz high-speed, 100 kHz low-speed), and a main PLL that can multiply either the main clock or high-speed CR clock. The PLL supports configurations yielding precise system clocks for USB, ADC sampling, and LCDC timing.

Does this MCU support hardware flow control on UART interfaces?

No - hardware flow control (CTS/RTS) is explicitly excluded for CY9AFA44NBPMC-G-JNE2 per the datasheet revision *D. Only channel 4 of the UART supports hardware flow control in earlier variants (CY9AFA41LB/FA42LB), but this feature is disabled in the FA44 series. Software-based flow control or application-level buffering must be implemented instead.

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

Dual-bank Flash allows independent erase/write operations on upper (240 KB) and lower (16 KB) banks. This enables safe over-the-air updates: new firmware is written to the inactive bank while the system runs from the active bank, followed by atomic bank swap at reset. No application interruption occurs, and rollback to previous version is possible if validation fails - critical for unattended industrial deployments.

Which pins are 5 V tolerant and how is this verified?

Specific GPIO pins - including P00–P07, P10–P17, P20–P27, P30–P37, P40–P47, P50–P57, P60–P67, P70–P77, P80–P87, and P90–P97 - are rated 5 V tolerant when configured as inputs, as confirmed in Section 5 ("List of Pin Functions") and Table 12.3.2 ("Pin Characteristics") of datasheet 002-05633 Rev. *D. Tolerance applies only in input mode with VCC ≥ 2.2 V; output drive strength remains 3.3 V compliant.