Hello Dear Readers,   Today in this post I will discuss how FPGA is a programmable ASIC and what are the basic building blocks of the FPGA. Modern FPGAs are named programmable ASICs and used in various applications which include the ASIC SOC designs and prototyping. FPGA programming includes the following types and is discussed below section. The main programming types for any FPGA are, 1). SRAM Based FPGAs: Most of the FPGAs in the market are based on SRAM technology. They store the configuration bit-file in the SRAM cells designed using latches. As the SRAM is volatile, they need to be configured at the start. There are two modes for programming and they are Master and Slave. The SRAM memory cell is shown in Fig.1. In the Master mode, FPGA reads configuration data from the external source and that can be flash. In the Slave mode, FPGA is configured by using the external master device such as processor. The external configuration interface can be JTAG that is also call...