MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -7. Memory can be accessed in ARM systems by instructions. Explanation: None. Explanation: This is a system architecture, in which the performance of the system is improved by reducing the size of the instruction set.

Detailed explanation-2: -This means that no data processing instruction operates directly on data in memory. The data must first be loaded into registers, modified, and then stored to memory. The program must specify an address, the size of data to be transferred, and a source or destination register.

Detailed explanation-3: -Each ARM instruction is encoded into a 32-bit word. Access to memory is provided only by Load and Store instructions. ARM data-processing instructions operate on data and produce new value. They are not like the branch instructions that control the operation of the processor and sequencing of instructions.

Detailed explanation-4: -Almost all ARM instructions can include an optional condition code. This is shown in syntax descriptions as cond . An instruction with a condition code is only executed if the condition code flags in the CPSR meet the specified condition.

Detailed explanation-5: -The ARM Cortex-R based MCUs have the three memory types: Normal, Device, and Strongly-ordered. The memory region have the following attributes: shareable or non-shareable, cacheable or non-cacheable, memory access permission, and eXecute Never (XN).