Internal Hardware Design of a Microcontroller in VLSI

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Figure 10: System Gate-Level Design in Xilinx
VLSI Circuit Diagrams in L-Edit The VLSI system design was accomplished using the software package L-Edit. All of the subsystems in VLSI are based on the gate-level designs shown in Figures 6 through 10. The D flip-flop, shown in Figure 11, uses six NOR gates. This design uses the least number of transistors, which is important because the D flip-flop is integral in three of the subsystems: the clock controller, the 16-bit timer, and the register. Figure 11: D Flip-Flop Design in VLSI The clock controller subsystem is shown in Figure 12. The 3-bit counter is on the left side and the 4:1 multiplexor is on the right.
Page 1 and 2: Internal Hardware Design of a Micro
Page 3 and 4: Table of Contents Introduction 4 Sy
Page 5 and 6: Block Diagrams Clock Controller Sub
Page 7 and 8: Register Subsystem The 8-bit accumu
Page 9 and 10: The clock controller in Figure 6 ha
Page 11: As shown in Figure 9, the comparato
Page 15 and 16: Figure 13: 16-bit Timer Subsystem i
Page 17 and 18: The VLSI design for the complete su
Page 19 and 20: showing the most significant four b
Page 21 and 22: Complete System: Figure 21: Compara
Page 23 and 24: VHDL Software Design The VHDL code
Page 25 and 26: Appendix: VHDL Subsystem Code and S
Page 27 and 28: Clock Controller Subsystem: library
Page 29 and 30: signal d,q: std_logic_vector (15 do

Internal Hardware Design of a Microcontroller in VLSI

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