Click <ESC> to unselect the design. This command is useful to redraw the schematic diagram after commands such as View Node which highlight one single node.
Click View -> View All to fit the screen with all the graphical elements currently on display.
Draw again the schematic diagram without changing the scale. Used to refresh the screen.
The above icons perform Zoom In and Zoom Out. When zooming in, the area determined by the mouse will be enlarged to fit the display window. When zooming out, the area determined by the mouse will contain the display window. If you click once, a zoom is performed at the desired location.Press Ctrl+A for " View All ", and Ctrl+o for zoom out.
Click on the icon "Electrical Net" or on View -> Electrical Net. Then, click in the desired interconnect or pin in the schematic diagram. After an extraction procedure has been carried out, you will see that all the wires connected to that node. Click <Escape> or View -> Unselect All to unselect the diagram.
The symbol library contains basic electrical symbols. Most standard symbols (R,L,C, OpAmp, diode, transmission lines) are part of thesymbol menu. Sources, probes and switches are also proposed. Some more symbols may be found in the IEEE directory, accessible through the command Insert -> User Symbol.
Basic Menu
Element Description Symbol name Button On/Off button button.sym Ground Ground connection equal to "0" vss.sym Supply Logic value equal to "1" vdd.sym Clock 0/1 generator clock.sym Led Logic probe (1=red by default, 0=black), with programmable color light.sym Hexadecimal display Displays four logic values as an hexadecimal numer, with programmable color and format (Unsigned, signed, integer, fixed point). The gray color is used when one or more pins is not connected digit.sym Inv Logic inverter not.sym 3-state Inv 3-state inverter. Neads enable=1 to generate the inverted output, otherwise 3-state output notif1.sym 2-input AND 2 input and gate and2.sym 3-input AND 3 input and gate and3.sym Hexadecimal keyboard Generates four logic values as an hexadecimal from a 16-key keyboard, with programmable color. kbd.sym 2-input NAND 2 input NAND gate nand2.sym 3-input NAND 3 input NAND gate nand3.sym 2-input OR 2 input OR gate or2.sym 2-input NOR 2 input NOR gate nor2.sym 3-input NOR 3 input NOR gate nor3.sym 3-input OR 3 input OR gate or3.sym 2-input XOR 2 input XOR gate xor2.sym 3-input XNOR 3 input XNOR gate xnor2.sym D-Flip flop Fall edge-sensitive flip flop. Copies the input information D on Q at a fall level of the clock. dreg.sym nMOS N-channel MOS device. Uses "spice.lib" where the MOS parameters can be described and modified. Use "nmos4.sym" to have access to the 4 terminations of the device. The logic signal is always transferred from the source to the drain. nmos.sym pMOS P-channel MOS device. Uses "spice.lib" where the MOS parameters can be described and modified. Use "pmos4.sym" to have access to the 4 terminations of the device. The logic signal is always transferred from the source to the drain. pmos.sym Latch D-latch, copies the input information D on Q at a high level of the clock. latch.sym 3-input complex gate 3-input complex gate, with a logic behavior described in VERILOG complex3.sym 5-input complex gate 5-input complex gate, with a logic behavior described in VERILOG complex5.sym Memory 8x8 bit 8x8 bit memory mem8x8.sym BASIC MENU
Advanced Menu
Element Description Symbol name Resistor Resistor between two nodes, in Ohm res.sym Capacitor Capacitor between two nodes , in Farad capa.sym Inductance Inductance between two nodes , in Henry self.sym OpAmp Operationnal amplifier, with programmable gain aop.sym Diode Diode, with a model provided in "spice.lib" diode.sym T-Line Transmission line, with user-accessible T0, Z0, or delay parameters tline.sym PWL Piece-Wise-Linear source, that generates 0-1 series with a user-defined time intervall for each logic value. pwl.sym V-source Voltage source, used for SPICE generation. vsource.sym I-source Current source, used for SPICE generation. isource.sym 8-bit Display Displays 8 logic values as an hexadecimal numer, with programmable color and format (Unsigned, signed, integer, fixed point). The gray color is used when one or more pins is not connected display.sym I/O Pad I/O pad symbol to represent the integrated circuit interface to the external world. Used to declare a schematic diagram I/O when creating a user-symbol. pad.sym I/O I/O symbol used to declare a schematic diagram I/O when creating a user-symbol. io.sym PIP Programmable Interconnect Point, used for the illustration of FPGA structure. pip.sym Matrix Matrix of programmable Interconnect Point, used for the illustration of FPGA structure. matrix.sym MUX 2-input logic multiplexor mux.sym LUT Look-up-table lut.sym On/Off Graphic switch. Can appear with two states: on and off. onoff.sym Transmission gate Logic transmission gate. Enables the signal to flow on a high level of the control "EN" tgate.sym Box Used to highlight one part of the schematic diagram, with programmable width and height box.sym Arrow Graphic arrow. Serves as an electrical connection for all arrows with the same name. Also serves as an I/O declaration when creating a user-symbol. arrow.sym Information Displays a user-defined information at a given value of the logic node probe.sym Microcontroller 8051 Simplified model of the Intel 8051 micro-controller (more information in the application note) 8051.sym
Microcontroller 16f84 Simplified model of the Microchip 16f84 micro-controller (more information in the application note) 16f84.sym
The command gives the complete netlist corresponding to the schematic diagram. The internal structure of hierarchical symbols also appears. The symbol name, list of pins, related node numbers and model number are listed.
The design hierarchy command gives an interesting insight in the hierarchical structure of symbols, together with the list of input and output symbols.
The timing diagram gives the time-domain aspect of all input and output nodes. You may zoom on a specific time window, add the evaluation of the consumed current, and get the exact value of each input/output at a desired location.
The symbol library contains basic logic and electrical symbols, sources, displays and switches. Most standard logic symbols (Inverter, Buffer, NAND, AND, NOR, OR, XOR) and D-latches are part of the "Basic" symbol menu. The analog components such as resistor, inductor, capacitor, operational amplifiers are reported in the "Advanced " menu. Notice several input/output symbols, as well as a variety of switches for programmable arrays. Some more symbols may be found in the IEEE directory, accessible through the command Insert -> User Symbol.
Use the command (View -> Unselect All) to cancel undesired commands, or to redraw the complete schematic diagram.