MC9S12DG256CFUE

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
  • EEPROM for data storage
• Package: QFP (Quad Flat Package)
• Essence: A powerful microcontroller designed for automotive embedded systems.
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier.

Specifications

• Architecture: 16-bit
• CPU Speed: Up to 25 MHz
• Program Memory Size: 256 KB Flash
• Data Memory Size: 4 KB EEPROM, 8 KB RAM
• Number of I/O Pins: 112
• Operating Voltage Range: 2.35V to 5.5V
• Temperature Range: -40°C to +125°C
• Communication Interfaces: CAN, SPI, SCI, I2C
• Analog-to-Digital Converter (ADC): 10-bit, 8 channels
• Timer Modules: 8-bit and 16-bit timers
• Watchdog Timer: Yes
• Interrupt Sources: Multiple interrupt sources available

Detailed Pin Configuration

The MC9S12DG256CFUE microcontroller has a total of 112 pins. The pin configuration is as follows:

• Pins 1-8: Port A (PA0-PA7)
• Pins 9-16: Port B (PB0-PB7)
• Pins 17-24: Port C (PC0-PC7)
• Pins 25-32: Port D (PD0-PD7)
• Pins 33-40: Port E (PE0-PE7)
• Pins 41-48: Port F (PF0-PF7)
• Pins 49-56: Port G (PG0-PG7)
• Pins 57-64: Port H (PH0-PH7)
• Pins 65-72: Port J (PJ0-PJ7)
• Pins 73-80: Port K (PK0-PK7)
• Pins 81-88: Port L (PL0-PL7)
• Pins 89-96: Port M (PM0-PM7)
• Pins 97-104: Port N (PN0-PN7)
• Pins 105-112: Port P (PP0-PP7)

Functional Features

The MC9S12DG256CFUE microcontroller offers several functional features, including:

1. High-performance CPU: The 16-bit CPU allows for efficient execution of instructions and faster processing.
2. Integrated Peripherals: The microcontroller includes various peripherals such as CAN, SPI, SCI, and I2C interfaces, enabling seamless communication with other devices.
3. Flash Memory: The built-in flash memory provides ample storage space for program code, allowing for easy firmware updates.
4. EEPROM: The embedded EEPROM allows for non-volatile data storage, ensuring data integrity even during power loss.
5. Analog-to-Digital Converter: The 10-bit ADC enables the microcontroller to interface with analog sensors and convert analog signals into digital values.
6. Timer Modules: The timer modules facilitate precise timing operations required in automotive applications.
7. Watchdog Timer: The integrated watchdog timer ensures system reliability by monitoring and resetting the microcontroller if necessary.
8. Interrupt Sources: Multiple interrupt sources allow for efficient handling of external events and real-time response.

Advantages and Disadvantages

Advantages: - High-performance CPU for faster processing - Integrated peripherals simplify system design - Ample program and data memory for complex applications - Wide operating voltage range for flexibility - Robust temperature range suitable for automotive environments

Disadvantages: - Limited pin count may restrict the number of external devices that can be connected directly - Higher power consumption compared to low-power microcontrollers

Working Principles

The MC9S12DG256CFUE microcontroller operates based on the Von Neumann architecture. It executes instructions fetched from the flash memory and stores data in the EEPROM and RAM. The CPU interacts with various peripherals through dedicated interfaces, enabling communication with external devices. Interrupts are used to handle time-critical events and ensure real-time responsiveness.

Detailed Application Field Plans

The MC9S12DG256CFUE microcontroller is widely used in automotive applications, including:

1. Engine Control Units (ECUs): The microcontroller powers ECUs responsible for controlling fuel injection, ignition timing, and other engine parameters.
2. Body Control Modules (BCMs): It is utilized in BCMs to manage functions like central locking, lighting control, and climate control.
3. Anti-lock Braking Systems (ABS): The microcontroller plays a crucial role in ABS units, ensuring precise control over braking systems.
4. Airbag Control Units (ACUs):