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MB91F312A from FUJ

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MB91F312A

Manufacturer: FUJ, FUJI

32-bit Microcontroller

Partnumber Manufacturer Quantity Availability
MB91F312A FUJ, FUJI 550 In Stock

Description and Introduction

32-bit Microcontroller The **MB91F312A** is a microcontroller manufactured by **Fujitsu (now part of Spansion)**. Below are the factual specifications, descriptions, and features based on available information:  

### **Manufacturer:**  
- **FUJITSU (now under Spansion)**  

### **Specifications:**  
- **Core:** **FR Family 32-bit RISC CPU (FR60 core)**  
- **Operating Frequency:** Up to **40 MHz**  
- **Supply Voltage:** **3.0V to 3.6V**  
- **Flash Memory:** **128 KB**  
- **RAM:** **8 KB**  
- **Package:** **100-pin LQFP (Low-profile Quad Flat Package)**  
- **Operating Temperature Range:** **-40°C to +85°C**  
- **I/O Ports:** **Up to 80 general-purpose I/O pins**  
- **Timers:**  
  - **16-bit Multi-Function Timer (MFT) × 4**  
  - **16-bit Reload Timer × 2**  
  - **Watchdog Timer (WDT)**  
- **Communication Interfaces:**  
  - **UART (Asynchronous Serial Interface) × 2**  
  - **LIN-UART (Local Interconnect Network) × 1**  
  - **I²C (Inter-Integrated Circuit) × 1**  
  - **CAN (Controller Area Network) × 1**  
- **ADC (Analog-to-Digital Converter):**  
  - **10-bit resolution, 8 channels**  
- **DMA (Direct Memory Access):** **4 channels**  
- **Low Power Modes:** **Sleep, Stop, and Clock Stop modes**  

### **Descriptions & Features:**  
- Designed for **automotive and industrial applications** requiring high reliability.  
- **Built-in Flash memory** supports in-system programming (ISP) and in-application programming (IAP).  
- **On-chip debugging** supported via **JTAG interface**.  
- **High-speed operation** with low power consumption.  
- **Robust peripheral set** for motor control, communication, and sensor interfacing.  
- **CAN interface** supports automotive networking applications.  
- **LIN-UART** enables cost-effective local networking.  

This microcontroller is optimized for **real-time control applications** in automotive electronics, industrial automation, and embedded systems.  

(Note: Always refer to the official datasheet for precise technical details.)

Application Scenarios & Design Considerations

32-bit Microcontroller

Alternative Part Number

  • MB91F313A --: Same MB91F31x family 32-bit microcontroller with compatible core and peripherals, higher flash variant, often used as a drop-in upgrade.
  • MB91F318A --: Member of the same MB91F31x series with larger memory and identical pinout family, suitable when extra flash is acceptable.
  • MB91F267N --: Similar Fujitsu 32-bit FR-series MCU with comparable peripheral set, usable as a functional substitute after pin and firmware review.

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