MSP 430 Architecture Exam Questions & Answers 100% solved!!

CPU Registers - ANSWER-1. 16 registers, each w/16bit storage capacity 2. 4 (R0-3) have dedicated usage Program Counter (PC) - ANSWER-R0. points to next instruction to be read from memory and executed by CPU Stack pointer - ANSWER-R1. Points to the first item in the stack at the top of the RAM. also used in the interrupt and function calls status register - ANSWER-R2. stores status of control bits Z(zero) C(carry) V(overflow) and N(negative) constant generators (CG1 and CG2) - ANSWER-R3 and most significant 7 bits of R2 (SR) are reserved for these. Responsible for generating 6 constants (0004h, 0008h, 0000h, 0001h, 0002h, FFFFh) used in microcontrollers Registers R4-R15 - ANSWER-general purpose. Can be used to store data, address pointers, or index values. Can be accessed w/byte or word instructions What does it mean for the MSP430 to have a 16bit address bus? - ANSWER-it can map 2^16 bytes or 64kB of memory space. what is each memory location formed by? - ANSWER-1 byte of data. 2 types of memory - ANSWER-1. RAM 2. Flash