MB90548GHDSPQR-G-494ERE2

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MB90548GHDSPQR-G-494ERE2 Application Field and Working Principle

MB90548GHDSPQR-G-494ERE2 is a microcontroller with an 8-bit CPU for embedded-use that is manufactured by Toshiba. This controller is distinguished by its medium-sized memory and an 8-bit instruction set that can be used in a wide range of applications. By combining a simple and efficient instruction set with its medium-sized memory, this controller is ideal for low-cost, medium-scale projects such as signal processing, automotive control and home appliances control.

Core CPU and Peripheral Board

The core of the MB90548GHDSPQR-G-494ERE2 is its 8-bit CPU. This CPU has 8 operating modes and can execute 8-bit instructions. It can support up to 256K bytes of on-chip ROM and 8K bytes of RAM. In addition, the 8-bit peripheral board contains 12 channels of 10-bit 10-MHz analog-to-digital converter, 4 serial communication channels, 3-channel 12-bit pulse width modulated output, and a timer that can measure events up to 40 microseconds.

Input and Output Ports

The MB90548GHDSPQR-G-494ERE2 has 4 input ports and 4 output ports. The input ports are dedicated to sensing the state of the specific input devices such as limit switches, position sensors, and thermistors while the output ports are used to control the operation of the specific output devices such as actuators, motors, and solenoids. The port B is dedicated to serve as a data bus allowing parallel communication to be used between different external I/O devices.

Integrated Timer

The integrated timer of the MB90548GHDSPQR-G-494ERE2 features 8 16-bit timer registers that can generate accurate repetitive timing events up to 5 MHz and can measure events up to 40 microseconds. The timer can be used for various applications such as periodic movements, periodic data acquisition and timing. The timer can also be used to interrupt the microcontroller for specific operations or to support time division multiplexing.

Programming and Memory Management

The MB90548GHDSPQR-G-494ERE2 supports programmable memory that allows user applications to be stored and retrieved when needed. The memory can be either on-chip ROM or an external memory device. The controller also supports a smart memory management technique that allows users to specify the size and location of the data to be stored in the ROM or external device.

Debugging and Test Tools

The MB90548GHDSPQR-G-494ERE2 also supports debugging and test tools such as a programmable breakpoint and a system emulator that allow users to trace the program execution and to analyze the execution results. It also supports a built-in serial port that allows the controller to communicate with a PC or a host computer for debugging and development. In addition, the controller supports a comprehensive set of on-chip peripheral functions such as LCD control, SPI, auxiliary serial I/O and I2C.

Conclusion

In conclusion, the MB90548GHDSPQR-G-494ERE2 microcontroller is an ideal solution for low-cost, medium-scale projects such as signal processing, automotive control and home appliances control. Its powerful instruction set and memory size, combined with its rich set of peripheral functions and debugging and test tools, make it a perfect choice for embedded applications.

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