MCF5485CZP200

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The MCF5485CZP200 is a ColdFire Plus embedded microcontroller produced by NXP Semiconductors, which is designed to provide performance, flexibility and various peripheral support functions.

This MCF5485 appeared as a MEMS-based integrated circuit with a base POWER Architecture configuration. The device contains a ColdFire central processing unit (CPU) and related logic plus several key peripherals, including UARTs, I2C, SPI, PWM and memory controllers.

The MCF5485 is capable of operating at speeds up to 40 MHz and has a 32-kbyte instruction cache and an 8-kbyte data cache. It utilizes a conventional 5-level MCF (Memory Controller and Flash) architecture. The MCF5485 offers an embedded 32-bit general purpose central processing unit (CPU), timers, interrupt controller, watchdogs, on-chip USB, serial communication interfaces, PWM, and memory controllers. This microcontroller board is widely used in various embedded application fields.

The primary application field of the MCF5485 is in embedded control systems. It is well-suited for a broad range of applications, such as in home automation, process control and automotive applications. The onboard peripherals lower the cost of the system by reducing the need for additional external components. Hence, this board can be used for sensor control, logging, automated meter reading, and motor control for industrial applications.

This microcontroller is also employed in consumer applications, including vending machines, medical equipment, audio systems, cameras and cash registers. Moreover, the MCF5485 has a wide range of capabilities and flexibility to meet low-power embedded platform requirements.

The working principle of the MCF5485 can be summarized by the following key points: the CPU of the board first fetches instructions and data from memory and decompresses them. The instructions are then loaded onto the 32-bit general purpose registers. Based on the instructions, the CPU executes and performs the necessary logical and arithmetic operations. The required data to perform the operations are passed to the relevant function blocks like interrupt controller, peripherals, and memory controller and the results are sent back to the processor via the registers.

The results are then stored again in memory or sent to the external ports. This cycle is repeated until all the instructions are executed and the process returns to fetch the next instruction. In some cases, the CPU fetches a branch instruction and jumps to an instruction that was stored previously, at which point the branch instruction is re-executed.

The MCF5485 possesses a vast range of features, including a 64-MHz clock speed, 32-bit CPU, 32-bit instruction and data cache, program memory capacity up to 8 Mbytes and memory depth of 2-kbyte data cache with 8-kbyte instruction cache and a 64-bit Double Data Rate (DDR) SDRAM controller.

In addition, this board also has several hardware-specific features, such as a floating point unit (FPU), a real-time clock (RTC), and a direct memory access (DMA) controller. Furthermore, the MCF5485 contains several pre-defined architecture-specific feature such as power management, clock gating, wait-for-interrupt, clocking and multiple clocks. Additionally, the board has an internal ROM of up to 16 Kbytes.

To conclude, the MCF5485 is a powerful microcontroller board that possesses a wide range of features and capabilities. It is suitable for a variety of embedded applications, and its flexibility and performance make it suitable for many low-power embedded platforms. Its primary application fields in embedded control, home automation and process control, medical equipment, and audio systems. Moreover, its working principle involves fetching instructions from memory, executing the instructions, storing the results in memory, and jumping to the next instruction.

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