MC9S12XET256CAG

Product Overview

• Category: Microcontroller
• Use: Embedded systems, automotive applications
• Characteristics: High-performance, 16-bit, low-power consumption
• Package: 112-pin LQFP (Low-profile Quad Flat Package)
• Essence: Advanced microcontroller with enhanced features for automotive applications
• Packaging/Quantity: Tray packaging, available in bulk quantities

Specifications

• Architecture: 16-bit HCS12X core
• Clock Speed: Up to 40 MHz
• Flash Memory: 256 KB
• RAM: 8 KB
• EEPROM: 4 KB
• Operating Voltage: 2.35V to 5.5V
• I/O Pins: 84
• Timers: 8-channel, 16-bit
• Analog-to-Digital Converter (ADC): 10-bit resolution, 16 channels
• Serial Communication Interfaces: SCI, SPI, I2C, CAN

Detailed Pin Configuration

The MC9S12XET256CAG microcontroller has a total of 112 pins. The pin configuration is as follows:

• Port A (PA0-PA7)
• Port B (PB0-PB7)
• Port C (PC0-PC7)
• Port D (PD0-PD7)
• Port E (PE0-PE7)
• Port F (PF0-PF7)
• Port G (PG0-PG7)
• Port H (PH0-PH7)
• Port J (PJ0-PJ7)
• Port K (PK0-PK7)
• Port L (PL0-PL7)
• Port M (PM0-PM7)
• Port N (PN0-PN7)
• Port P (PP0-PP7)
• Port R (PR0-PR7)

Functional Features

• High-performance 16-bit microcontroller suitable for automotive applications
• Enhanced HCS12X core provides improved processing capabilities
• Low-power consumption for efficient operation in battery-powered systems
• Ample flash memory and RAM for data storage and program execution
• Integrated EEPROM for non-volatile data storage
• Multiple serial communication interfaces for seamless connectivity
• Extensive I/O pins for interfacing with external devices
• On-chip timers for precise timing and event management
• Analog-to-Digital Converter (ADC) for analog signal acquisition
• CAN interface for automotive networking applications

Advantages and Disadvantages

Advantages

• High-performance architecture for demanding automotive applications
• Low-power consumption extends battery life in portable systems
• Ample memory resources for storing data and programs
• Versatile serial communication interfaces enable seamless connectivity
• Comprehensive set of I/O pins for interfacing with external devices
• Integrated ADC simplifies analog signal acquisition
• CAN interface facilitates automotive networking

Disadvantages

• Limited availability of alternative models with similar features
• Higher cost compared to lower-end microcontrollers

Working Principles

The MC9S12XET256CAG microcontroller operates based on the HCS12X core architecture. It executes instructions stored in its flash memory, processes data using its CPU, and communicates with external devices through its I/O pins and serial interfaces. The microcontroller's working principles involve executing instructions sequentially, managing interrupts, and interacting with peripherals as per the program logic.

Detailed Application Field Plans

The MC9S12XET256CAG microcontroller finds extensive use in various automotive applications, including:

1. Engine control units (ECUs)
2. Body control modules (BCMs)
3. Instrument clusters
4. Anti-lock braking systems (ABS)
5. Airbag control units
6. Powertrain control modules (PCMs)
7. Infotainment systems

Its high-performance capabilities, extensive I/O options, and integrated features make it suitable for controlling and monitoring various automotive subsystems.

Detailed and Complete Alternative Models

While the MC9S12XET256CAG microcontroller offers advanced features for automotive applications, alternative models with similar capabilities include:

1. Freescale MC9S12XE256CAA
2. NXP S12XE256
3. Renesas H8/3664F
4. Texas Instruments MSP430F5438A
5. Microchip PIC18F87J50

These alternative models provide comparable performance and features, allowing designers to choose the most suitable microcontroller for their specific application requirements.

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