Hello Dear Readers, Today in this post, I will provide some deep insight into the VLSI packaging evolution and innovations. Semiconductor packaging has evolved from a simple protective housing into a critical performance enabler. In the modern VLSI landscape, packaging is no longer an afterthought; it is a fundamental determinant of PPA (Power, Performance, and Area) metrics, often dictating the thermal limits and signal integrity of the final SoC. 1. Traditional Packaging Technologies: These methods are the workhorses of the industry, widely used for low-to-medium complexity devices where cost-efficiency is paramount. Wire Bonding (QFN, QFP, DIP): Wire bonding is the most mature interconnection technology. It uses thin gold, copper, or aluminum wires to connect the die's bond pads to the package's internal leadframe. Implementation: The die is attached face-up to a leadframe or substrate. A wire bonder uses thermocompression or ultrasonic energy to attach wires betwee...
Hello Dear Readers, Today in this post I will provide some basics to advanced ARM's assembly language practice QA part-4, I have used the Keil tool for code writing. Q-1). Write an assembly language program that performs a mode change by modifying the contents of the CPSR. a. The mode you should change to is user mode, and you have to modify the mode field of CPSR by the value of 0x10. b. This assumes that the current mode is a privileged mode such as supervisor mode. Code: ; program which changes the microprocessor mode masking equ 0x1f user_mode equ 0x10 area change, code, readonly entry MRS R0,CPSR; read the status of the microprocessor BIC R0, R0,#masking; apply the masking bit ORR R0,R0,#user_mode ; set the mode user_mode MSR CPSR_C,R0 ; written back with control_field_mask END Output: Q-2). Write an assembly language program that generates S...