Infineon Technologies MB9AF314MAPMC-G-JNE2

Overview

MB9AF314MAPMC-G-JNE2 from Spansion (formerly Fujitsu Semiconductor) is a 32-bit ARM Cortex-M3 microcontroller targeting high-performance motor control and industrial embedded applications. It operates at up to 40 MHz, integrates 256 KB on-chip Flash and 32 KB SRAM (split into 16 KB SRAM0 + 16 KB SRAM1), supports USB 2.0 Full-Speed device/host, and features 16-channel 12-bit ADC with 1.0 µs conversion time at 5 V.

For engineers reviewing the MB9AF314MAPMC-G-JNE2 datasheet, MB9AF314MAPMC-G-JNE2 pinout, MB9AF314MAPMC-G-JNE2 application, or MB9AF314MAPMC-G-JNE2 equivalent, key selection criteria include its 100-pin LQFP package, dual watchdog timers (HW + SW), QPRC for encoder position sensing, CRC accelerator for IEEE-802.3/CRC16 integrity checks, and support for LIN 2.1, I²C, UART, and CSIO across eight serial channels.

Technical Context

The MB9AF314MAPMC-G-JNE2 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 zero-wait-state Flash and two independent SRAM banks-SRAM0 connected to I/D-code buses and SRAM1 on the system bus-enabling concurrent CPU and DMA access.

Peripheral integration centers on deterministic real-time control: dual multi-function timers provide PWM, PPG, input capture, A/D activation, and dead-time insertion; quadrature position/revolution counters (QPRC) support precise motor shaft tracking; and the USB interface handles both full-speed device and host roles with automatic connect/disconnect detection and 256-byte packet support.

Key Specifications

Pinout & Package

MB9AF314MAPMC-G-JNE2 is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are fully defined in Fujitsu Semiconductor Data Sheet DS706-00012-2v0-E, Section "PIN DESCRIPTION".

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MB9AF314MAPMC-G-JNE2, the MB9AF315MAPMC-G-JNE2 adds external memory support for complex firmware architectures, while the MB9AF312MAPMC-G-JNE2 reduces memory and removes QPRC to lower BOM cost-both maintain identical peripheral timing, clocking, and debug infrastructure.

Availability

MB9AF314MAPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, PLC I/O expansion, and smart energy metering requiring stable component supply and long-term lifecycle support.

Supply support for MB9AF314MAPMC-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

Spansion (now part of Cypress Semiconductor, a subsidiary of Infineon Technologies) continued Fujitsu Semiconductor's analog and microcontroller product lines after 2012, maintaining legacy part numbers and specifications for industrial continuity.

The MB9A310A Series was designed specifically for cost-sensitive, high-reliability embedded control in motor-driven systems, emphasizing integrated peripherals (QPRC, motor timers, LIN) and robustness (dual watchdog, CSV, LVD) over general-purpose compute.

FAQ

What is the maximum operating voltage and temperature range for MB9AF314MAPMC-G-JNE2?

The device operates from 2.7 V to 5.5 V on VCC and supports an industrial temperature range of −40 °C to +85 °C. USBVCC must be supplied at 3.0–3.6 V when the USB transceiver is active; otherwise, it shares the VCC rail. These ratings are validated per DS706-00012-2v0-E Section 6.1 and confirmed in the Absolute Maximum Ratings table.

Does MB9AF314MAPMC-G-JNE2 support JTAG debugging?

No-it supports Serial Wire JTAG Debug Port (SWJ-DP) only, as specified in Section 1.4 of DS706-00012-2v0-E. The part does not implement full JTAG TAP controller; SWD uses SWCLK/SWDIO pins and provides equivalent debug access (breakpoints, register read/write, flash programming) with reduced pin count.

Can the on-chip SRAM be used for stack and heap allocation in RTOS environments?

Yes-SRAM0 (16 KB) is accessible via I/D-code buses and ideal for instruction cache and stack; SRAM1 (16 KB) connects to the system bus and is optimized for DMA buffers and heap. Both regions are contiguous and configurable in linker scripts; the NVIC and SysTick timer ensure deterministic RTOS task switching within 12 cycles.

Is hardware flow control supported on all UART channels?

No-hardware flow control (CTS/RTS) is explicitly excluded for MB9AF314LA/MA/NA per Section 3.4.1 of DS706-00012-2v0-E. Only UART channels 4–7 support optional hardware flow control, and this feature is disabled in the MB9AF314 series. Software XON/XOFF or application-level handshaking must be used instead.