Infineon Technologies MB9AF312LAPMC-G-JNE2

Overview

MB9AF312LAPMC-G-JNE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 512 KB on-chip Flash, 32 KB SRAM (split into two 16 KB banks), USB 2.0 Full-Speed device/host interface, and integrated motor control peripherals including 8-channel Base Timers, 2-unit QPRC, and multi-function serial interfaces supporting UART/CSIO/LIN/I²C. It operates at up to 40 MHz and targets embedded motor control and industrial automation systems.

For engineers reviewing the MB9AF312LAPMC-G-JNE2 datasheet, MB9AF312LAPMC-G-JNE2 pinout, MB9AF312LAPMC-G-JNE2 application, or MB9AF312LAPMC-G-JNE2 equivalent, key selection criteria include USB dual-role capability, 16-bit A/D converter with FIFO and priority scanning, external bus interface support (8 chip selects, 25-bit address), hardware CRC accelerator for CCITT CRC16 and IEEE-802.3 CRC32, and low-power modes (SLEEP/TIMER/STOP) with sub-clock wake-up.

Technical Context

The MB9AF312LAPMC-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 integration. Its clock system integrates 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 - with Clock Supervisor (CSV) for external clock failure detection.

Peripheral architecture includes a dedicated 8-channel DMA controller with independent bus access, three 12-bit A/D converters (1.0 μs conversion @ 5 V), and motor-specific blocks: quadrature position/revolution counters (QPRC), multi-function timers with dead-time insertion (DTIF), and PWM/PPG waveform generation. The USB subsystem provides full-speed device/host operation with double-buffered endpoints and automatic connect/disconnect detection.

Key Specifications

Pinout & Package

MB9AF312LAPMC-G-JNE2 is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment follows FM3 Family Peripheral Manual TYPE1 layout, supporting 83 fast GPIOs, multiple peripheral multiplexing via port relocate function, and 5V-tolerant I/O on selected pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MB9AF312LAPMC-G-JNE2, the MB9AF314LAPMC-G-JNE2 trades external bus support for doubled Flash/SRAM capacity, while the MB9AF311LAPMC-G-JNE2 reduces both memory and A/D resources to lower unit cost - making the MB9AF312LAPMC-G-JNE2 the optimal balance for mid-tier industrial control with memory expansion and multi-sensor needs.

Availability

MB9AF312LAPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor drives, automated test equipment, and smart building HVAC controllers requiring stable component supply and long-term lifecycle support.

Supply support for MB9AF312LAPMC-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, industrial, and security solutions.

The MB9AF312LAPMC-G-JNE2 belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for cost-sensitive, high-performance embedded control applications demanding integrated motor control, USB connectivity, and robust industrial I/O.

FAQ

Does MB9AF312LAPMC-G-JNE2 support USB device and host modes simultaneously?

Yes, it supports concurrent USB device and host operation via separate hardware blocks. The USB interface includes dedicated device and host controllers sharing the same DP/DM pins, with automatic mode switching controlled by firmware. Endpoint configuration and packet buffering are independently managed for each role, enabling applications like USB OTG-like functionality in industrial gateways.

What is the maximum operating frequency of the internal PLL?

The Main PLL supports output frequencies up to 80 MHz when driven by the 4–48 MHz main clock, but the CPU core is rated for 40 MHz operation. This allows the PLL to generate higher-frequency clocks for peripherals such as USB (48 MHz) or external bus interfaces while maintaining safe core timing margins per the datasheet's recommended operating conditions.

How many independent A/D conversion units does MB9AF312LAPMC-G-JNE2 contain?

It contains three independent 12-bit successive approximation A/D converters. Each unit supports scanning mode with 16-step FIFO and priority-based conversion with 4-step FIFO. All three units share the same 16 analog input channels (AD0–AD15), allowing time-interleaved or synchronized sampling configurations under DMA control.

Is the External Bus Interface available on all FM3 variants?

No - the External Bus Interface is excluded from CY9AF311LA, F312LA, and F314LA variants per the datasheet. MB9AF312LAPMC-G-JNE2 retains this feature, supporting up to 256 MB address space with 8 chip selects and 8-/16-bit data width, enabling direct interfacing with external NOR Flash, SRAM, or FPGA-based accelerators without external logic.