MC9S12DT256BMPV

Product Overview

• Category: Microcontroller
• Use: Embedded systems, automotive applications
• Characteristics:
  • High-performance 16-bit microcontroller
  • Integrated peripherals for automotive applications
  • Flash memory for program storage
  • RAM for data storage
• Package: 112-pin LQFP (Low Profile Quad Flat Package)
• Essence: The MC9S12DT256BMPV is a powerful microcontroller designed for embedded systems, specifically targeting automotive applications.
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

• Architecture: 16-bit HCS12 core
• Clock Speed: Up to 25 MHz
• Flash Memory: 256 KB
• RAM: 12 KB
• Operating Voltage: 2.35V to 5.5V
• Operating Temperature: -40°C to +125°C
• Number of I/O Pins: 84
• Communication Interfaces:
  • SCI (Serial Communication Interface)
  • SPI (Serial Peripheral Interface)
  • I2C (Inter-Integrated Circuit)
  • CAN (Controller Area Network)

Detailed Pin Configuration

The MC9S12DT256BMPV microcontroller has a total of 112 pins. The pin configuration is as follows:

• Pins 1-4: VDD (Power Supply)
• Pins 5-8: GND (Ground)
• Pins 9-16: Port A (General Purpose I/O)
• Pins 17-24: Port B (General Purpose I/O)
• Pins 25-32: Port C (General Purpose I/O)
• Pins 33-40: Port D (General Purpose I/O)
• Pins 41-48: Port E (General Purpose I/O)
• Pins 49-56: Port F (General Purpose I/O)
• Pins 57-64: Port G (General Purpose I/O)
• Pins 65-72: Port H (General Purpose I/O)
• Pins 73-80: Port J (General Purpose I/O)
• Pins 81-88: Port K (General Purpose I/O)
• Pins 89-96: Port L (General Purpose I/O)
• Pins 97-104: Port M (General Purpose I/O)
• Pins 105-112: Port N (General Purpose I/O)

Functional Features

The MC9S12DT256BMPV microcontroller offers several functional features that make it suitable for automotive applications:

1. Integrated Peripherals: The microcontroller includes a wide range of integrated peripherals such as timers, analog-to-digital converters, pulse-width modulation modules, and communication interfaces (SCI, SPI, I2C, CAN). These peripherals enable seamless integration with various automotive systems.
2. Flash Memory: With 256 KB of flash memory, the MC9S12DT256BMPV provides ample space for storing program code, allowing for flexible and efficient software development.
3. RAM: The 12 KB of RAM allows for temporary data storage during program execution, enabling efficient processing of real-time data in automotive applications.
4. High Performance: The 16-bit HCS12 core architecture and clock speed of up to 25 MHz ensure fast and reliable operation, meeting the demanding requirements of automotive systems.

Advantages and Disadvantages

Advantages:

• Powerful microcontroller specifically designed for automotive applications
• Integrated peripherals simplify system design and reduce external component count
• Ample flash memory and RAM for program and data storage
• High-performance architecture ensures efficient processing of real-time data

Disadvantages:

• Limited number of I/O pins may restrict the connectivity options in complex systems
• Higher power consumption compared to low-power microcontrollers, which may be a concern for battery-operated applications

Working Principles

The MC9S12DT256BMPV microcontroller operates based on the principles of digital logic and embedded systems. It executes instructions stored in its flash memory, interacting with integrated peripherals and external devices through its I/O pins. The clock signal drives the internal operations, ensuring synchronization and precise timing.

Detailed Application Field Plans

The MC9S12DT256BMPV microcontroller finds extensive use in various automotive applications, including:

1. Engine Control Units (ECUs): It is employed in ECUs to control fuel injection, ignition timing, and other engine parameters.
2. Body Control Modules (BCMs): The microcontroller is utilized in BCMs to manage functions like central locking, lighting control, and climate control.
3. Anti-lock Braking Systems (ABS): It plays a crucial role in ABS by processing wheel speed sensor data and controlling the braking