design an memory map using MPU, RAM 1, RAM 2, ROM and I/O port
Please find below the memory map using MPU, RAM 1, RAM 2, ROM and I/O port:
0x0000 – 0x7FFF : ROM
0x8000 – 0x9FFF : RAM 1 (8 KB)
0xA000 – 0xBFFF : RAM 2 (8 KB)
0xC000 – 0xDFFF : I/O Port (8 KB)
0xE000 – 0xFFFF : MPU (8 KB)
Note: The address range shown above is for illustrative purposes only and may vary depending on the specific system requirements.
To design a memory map using MPU (Memory Protection Unit), RAM 1, RAM 2, ROM, and I/O port, you can follow the steps below:
Step 1: Determine the memory size for each component.
- Decide on the size of MPU, RAM 1, RAM 2, ROM, and I/O port. For example, let's assume the MPU size is 1MB, RAM 1 size is 512KB, RAM 2 size is 512KB, ROM size is 4MB, and I/O port size is 64KB.
Step 2: Assign the memory ranges for each component.
- Divide the MPU memory space into regions for different components.
- Allocate the memory regions based on the sizes defined in step 1. For instance, you could assign the MPU memory space as follows:
- ROM: 0x00000000 - 0x003FFFFF (4MB)
- RAM 1: 0x00400000 - 0x0047FFFF (512KB)
- RAM 2: 0x00480000 - 0x004FFFFF (512KB)
- I/O port: 0xFFFF0000 - 0xFFFFFFFF (64KB)
Step 3: Map the memory regions to physical addresses.
- Determine the physical addresses that correspond to the memory regions.
- Assign physical addresses based on the desired memory layout. For example:
- MPU ROM region: 0x10000000 - 0x103FFFFF
- MPU RAM 1 region: 0x20000000 - 0x2007FFFF
- MPU RAM 2 region: 0x20080000 - 0x200FFFFF
- MPU I/O port region: 0x30000000 - 0x3000FFFF
Step 4: Configure the MPU.
- Set up the MPU to enforce memory protection and access permissions based on the defined memory regions. This step involves programming the MPU registers to define the memory regions, access permissions (such as read-only or read-write), and other attributes.
By following these steps, you can design a memory map using an MPU, RAM 1, RAM 2, ROM, and I/O port. Remember to adjust the sizes and memory ranges based on your specific requirements.