S912XET512AVAG

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Embedded - Microcontrollers

The S912XET512AVAG is an advanced microcontroller of the popular family of S912 microcontrollers developed by Freescale. It is an entry-level device featuring an 8-bit data bus and 16-bit memory addressing, a 32Kb of flash memory and 512 bytes of RAM, and a wide range of peripheral interfaces. Its package measures only 6.1 x 5.6 mm, and includes a high efficiency voltage regulator, a battery backup voltage regulator and a watchdog timer.

Applications

The S912XET512AVAG microcontroller can be used in a variety of embedded applications, primarily those requiring a low cost and low power solution with moderate computing performance. It is well-suited for the following applications:

• Data acquisition systems
• Sensor networks
• Industrial control system
• Home automation
• Security systems

Working Principle

The S912XET512AVAG microcontroller operates in two modes: supervisor mode and user mode. In the supervisor mode, the processor can execute privileged instructions to configure system parameters, run interrupts and perform other tasks. In the user mode, the data is transferred over the data bus and the instructions are fetched from the program memory and executed. The single cycle 16-bit instruction can access any address location in either the program or data memory.

The S912XET512AVAG microcontroller can be used to develop real-time applications that use multiple tasks, since it supports 17 different instructions in supervisor mode. This allows developers to create sophisticated programs that are able to keep track of various tasks and maintain their order. Additionally, the device features extensive interrupt capabilities, allowing it to react to events with maximum speed.

Conclusion

Overall, the S912XET512AVAG is an excellent choice for embedded applications that require low-power and low-cost solutions with moderate computing performance. Its small package size, low pin count and wide range of usable peripherals make it an ideal device for those applications. It is also very easy to program, thanks to the ability to execute multiple instructions in the supervisor mode and support for an extensive interrupt structure.

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