Infineon Technologies MB9AF312NAPMC-G-JNE2

Overview

MB9AF312NAPMC-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 requiring real-time timing, analog acquisition, and protocol flexibility.

For engineers reviewing the MB9AF312NAPMC-G-JNE2 datasheet, MB9AF312NAPMC-G-JNE2 pinout, MB9AF312NAPMC-G-JNE2 application, or MB9AF312NAPMC-G-JNE2 equivalent, this page delivers verified technical context, validated pin functions, confirmed peripheral capabilities, and precise alternative part comparisons - all grounded in the official CY9A310A Series documentation (Rev. *F, Nov 2024).

Technical Context

The MB9AF312NAPMC-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 integration. Its memory subsystem features zero-wait-state Flash execution and dual-bus-connected SRAM banks (SRAM0 on I/D-code bus, SRAM1 on system bus), enabling concurrent CPU and DMA access.

Peripherals include a dual-mode USB controller (Full-Speed device with 6 endpoints, Low/Full-Speed host), eight-channel DMA with burst/demand transfer modes, three 12-bit ADC units (1.0 µs conversion @5 V), and dedicated motor control blocks: 8-channel Base Timers (PWM/PPG/PWC), two QPRC units (16-bit position/revolution counters), and DTIF emergency stop interrupt support.

Key Specifications

Pinout & Package

MB9AF312NAPMC-G-JNE2 is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow the CY9A310A Series "Pin Assignment" (Page 9) and "List of Pin Functions" (Page 15) documentation, confirming full compatibility with FM3 Family Peripheral Manual TYPE1 configuration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit Arm Cortex-M3 microcontroller applications.

Compared with MB9AF311NAPMC-G-JNE2, the MB9AF312NAPMC-G-JNE2 adds 256 KB Flash, 16 KB SRAM, USB host capability, and a third ADC unit - enabling richer firmware features, larger buffer space, and dual-role USB connectivity. Against MB9AF314NAPMC-G-JNE2, it omits the external bus interface, reducing pin count and layout complexity while retaining full motor control and communication functionality.

Availability

MB9AF312NAPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, PLC I/O expansion, and USB-capable HMIs requiring stable component supply, long-term lifecycle support, and consistent electrical performance across temperature and voltage ranges.

Supply support for MB9AF312NAPMC-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 automotive certifications.

This part belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for real-time embedded control in motor drives, industrial automation, and automotive body electronics where deterministic timing, analog integration, and protocol flexibility are essential.

FAQ

What is the maximum operating frequency of the MB9AF312NAPMC-G-JNE2?

The MB9AF312NAPMC-G-JNE2 operates at up to 40 MHz using its Arm Cortex-M3 core. This frequency is achievable when driven by the main clock (4–48 MHz crystal or external source) with the Main PLL enabled. The datasheet confirms stable operation across the full voltage range (2.7–5.5 V) and industrial temperature range (−40°C to +85°C).

Does MB9AF312NAPMC-G-JNE2 support USB host functionality?

Yes, MB9AF312NAPMC-G-JNE2 supports USB 2.0 Full-Speed and Low-Speed host mode, including automatic device connect/disconnect detection, IN/OUT token handshake, and up to 256-byte packet length. This capability is documented in the CY9A310A Series datasheet (Rev. *F, Page 2) and distinguishes it from lower-tier variants like MB9AF311NAPMC-G-JNE2, which lacks host mode.

How many ADC channels does MB9AF312NAPMC-G-JNE2 have, and what is their resolution and speed?

MB9AF312NAPMC-G-JNE2 integrates three independent 12-bit successive approximation ADC units, supporting up to 16 analog input channels. Each unit achieves 1.0 µs conversion time at 5 V supply, with configurable priority and scanning modes. FIFO depth is 16 steps for scan mode and 4 steps for priority mode, as specified in the "A/D Converter" section (Page 3) of the datasheet.

Is MB9AF312NAPMC-G-JNE2 pin-compatible with other FM3 family members?

Yes, MB9AF312NAPMC-G-JNE2 uses the same 100-pin LQFP package and shares identical pin assignment with MB9AF311NAPMC-G-JNE2 and MB9AF314NAPMC-G-JNE2. All three support the same GPIO, peripheral, and power pin mappings per the "Pin Assignment" table (Page 9), enabling drop-in replacement within the same package variant - though feature availability (e.g., USB host, External Bus Interface) differs between models.