Infineon Technologies CY9AFA42NBPMC-G-JNE2

Overview

CY9AFA42NBPMC-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 40×8 segments. It operates at up to 40 MHz, supports six low-power modes including Deep Standby RTC, and targets embedded control in industrial HMI and appliance panels.

For engineers reviewing the CY9AFA42NBPMC-G-JNE2 datasheet, CY9AFA42NBPMC-G-JNE2 pinout, CY9AFA42NBPMC-G-JNE2 application, or CY9AFA42NBPMC-G-JNE2 equivalent, key selection criteria include dual-operation flash architecture, 24-channel 12-bit ADC with 2.0 μs conversion time, hardware flow control on UART ch.4, HDMI-CEC transceiver support, and 100-pin LQFP package with 5 V-tolerant I/O capability.

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 includes dual-bank Flash enabling concurrent read/erase/write operations and two independent SRAM banks-SRAM0 connected to I-code/D-code buses and SRAM1 on the system bus-enabling deterministic real-time execution.

The peripheral set integrates an 8-channel DMA controller with 32-bit addressing, up to 24-channel 12-bit successive-approximation ADC with scanning and priority modes, and a programmable LCD controller with internal bias resistors and blinking function. Clock management includes five sources (4–48 MHz main, 32.768 kHz sub, 4 MHz/100 kHz CR oscillators, and PLL), with Clock Supervisor (CSV) monitoring external clock integrity.

Key Specifications

Pinout & Package

This device is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad, compliant with JEDEC MO-152AC. Pin functions are fully defined in the FM3 Peripheral Manual TYPE6 specification and validated for 5 V-tolerant I/O on designated ports.

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 RA4M1, CY9AFA42NBPMC-G-JNE2 uniquely combines dual-bank Flash, integrated 40×8 LCDC, and full HDMI-CEC transceiver in a single 100-pin LQFP - delivering lowest component count for cost-sensitive, display-and-remote-centric embedded controllers.

Availability

CY9AFA42NBPMC-G-JNE2 is available at Aetrix Electronics and suitable for home appliance HMIs, industrial panel controllers, smart energy meters, and remote control hubs requiring stable component supply across multi-year production cycles.

Supply support for CY9AFA42NBPMC-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 leader specializing in power management, automotive MCUs, and security solutions, with global manufacturing and R&D infrastructure.

This part belongs to the FM3 family - a line of low-power, cost-optimized 32-bit ARM Cortex-M3 microcontrollers designed specifically for industrial human-machine interfaces, white goods, and consumer remote control systems.

FAQ

Does CY9AFA42NBPMC-G-JNE2 support hardware debugging via SWD or JTAG?

Yes, it features a Serial Wire JTAG Debug Port (SWJ-DP) compliant with ARM CoreSight standards. This enables full-cycle debugging, flash programming, and real-time variable inspection using standard tools like Segger J-Link or ST-Link v2. The debug interface remains accessible in all non-Deep-Standby power modes and supports breakpoints, watchpoints, and memory access without halting peripheral operation.

What is the maximum operating temperature range for this MCU?

The CY9AFA42NBPMC-G-JNE2 is rated for industrial temperature operation from –40 °C to +85 °C. This range is validated per JEDEC JESD22-A104 and confirmed in the "Recommended Operating Conditions" section of the datasheet (Rev. *D, Page 72). Thermal derating is not required within this range, and the internal LVD and CSV circuits remain fully functional across the entire span.

Can the LCD controller drive both static and multiplexed LCDs?

It supports only multiplexed (static drive is not implemented). The LCDC is configured for 4-, 6-, or 8-common operation with up to 40 segments, using internal voltage dividers to generate V0–V4 bias voltages. Static LCD driving would require external bias generation and is not supported by the on-chip LCDC logic or pin configuration.

Is external bus interface available on this specific variant?

No. The CY9AFA42NBPMC-G-JNE2 - like all FA42xx variants in the CY9AA40NB series - does not implement the External Bus Interface. This is explicitly stated in the datasheet footnote on Page 2: "CY9AFA41LB, FA42LB and FA44LB do not support External Bus Interface." Designers requiring external memory expansion must select FA40xx or FA43xx derivatives instead.