Basic VLSI Design: Principles and Applications

4-bit processor 4-bit register ABCD adder element allow arrangement Barrel Shifter basic bounding box buffered buses capacitance channel chip CIF code circuitry clock Colorplate combinational logic connected consider delay depletion mode transistors DEPLETION REGION design process design rules diffusion enhancement mode example finite state machine floorplan geometry given as Figure implementation input interconnection inverter leaf cells mask layout Memory Cell metal layer multiplexer nMOS nMOS circuits Note nsec output pass transistors path POLY polysilicon pull-down pull-up ratio red-green function block register array Selection and Control sheet resistance shift register shown in Figure signals silicon silicon dioxide simulation specified standard cell stick diagram storage structure substrate subsystems switch logic symbolic Syntax system design threshold voltage typical V₁ virtual grid VLSI design WABC width wire Zp.u