MC9S12XA256VAL

Product Overview

• Category: Microcontroller
• Use: Embedded systems, automotive applications
• Characteristics: High-performance, low-power consumption, integrated peripherals
• Package: 112-pin LQFP (Low Profile Quad Flat Package)
• Essence: Advanced microcontroller with enhanced features and capabilities
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on customer requirements

Specifications

• Architecture: 16-bit HCS12X core
• Clock Speed: Up to 50 MHz
• Flash Memory: 256 KB
• RAM: 12 KB
• EEPROM: 2 KB
• Operating Voltage: 2.35V to 5.5V
• Operating Temperature: -40°C to +125°C
• Peripherals: Multiple timers, analog-to-digital converters, serial communication interfaces, PWM modules, etc.
• I/O Pins: 84 general-purpose I/O pins
• Packages: Available in various package options including LQFP, QFP, and BGA

Detailed Pin Configuration

The MC9S12XA256VAL microcontroller has a total of 112 pins. The pin configuration is as follows:

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

Functional Features

• Enhanced Performance: The MC9S12XA256VAL microcontroller offers high processing power and performance, making it suitable for demanding applications.
• Low Power Consumption: It is designed to operate efficiently with low power consumption, making it ideal for battery-powered devices.
• Integrated Peripherals: The microcontroller includes a wide range of integrated peripherals such as timers, ADCs, communication interfaces, and PWM modules, reducing the need for external components.
• Flexible I/O Configuration: With 84 general-purpose I/O pins, the MC9S12XA256VAL provides flexibility in connecting external devices and sensors.
• Robust Operating Temperature Range: The microcontroller can operate reliably in extreme temperature conditions, ranging from -40°C to +125°C.

Advantages and Disadvantages

Advantages: - High-performance capabilities - Low power consumption - Integrated peripherals reduce external component count - Flexible I/O configuration

Disadvantages: - Limited RAM capacity compared to some other microcontrollers - Higher cost compared to lower-end microcontrollers

Working Principles

The MC9S12XA256VAL microcontroller operates based on the 16-bit HCS12X core architecture. It executes instructions stored in its flash memory and interacts with various peripherals to perform specific tasks. The microcontroller communicates with external devices through its I/O pins and utilizes its integrated peripherals to handle tasks such as analog-to-digital conversion, timing, and serial communication.

Detailed Application Field Plans

The MC9S12XA256VAL microcontroller finds extensive use in automotive applications, including:

1. Engine Control Units (ECUs): It can be used to control fuel injection, ignition timing, and other engine management functions.
2. Body Control Modules (BCMs): It enables control of various vehicle systems such as lighting, door locks, and climate control.
3. Anti-lock Braking Systems (ABS): The microcontroller can be employed to monitor wheel speed sensors and control the ABS functionality.
4. Airbag Control Units (ACUs): It plays a crucial role in managing airbag deployment based on sensor inputs.

Detailed and Complete Alternative Models

1. MC9S12XEP100: Similar to MC9S12XA256VAL but with 100 KB flash memory and 8 KB RAM.
2. MC9S12XDT256: Offers 256 KB flash memory, 16 KB RAM, and additional features like CAN (Controller Area Network) interface.
3. MC9S12XEG128: Provides 128 KB flash memory, 8 KB RAM, and similar peripheral options.

These alternative models offer varying memory capacities and additional features, allowing users to choose the most suitable microcontroller for their specific application requirements.

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