eldo_user

Eldo Control Language
Examples Using ECL as an Alternative to Standard Eldo Commands
Examples Using ECL as an Alternative to
Standard Eldo Commands
The Eldo Control Language can be used as a powerful custom alternative to standard Eldo
commands. The examples here show the steps required to create ECL alternatives.
• .STEP Alternative
• .EXTRACT Alternative
• .PRINTFILE Alternative #1
• .PRINTFILE Alternative #2
• .OPTIMIZE Alternative
.STEP Alternative
Netlist directory: 25-step_alternative
The following example shows how the step loops available inside ECL can be used as an
alternative to the regular .STEP command in Eldo.
It uses an ECL step loop inside a testbench instead of a .STEP param statement. The testbench
instantiates an RC circuit and steps the resistor value from 1 to 10 with increments of 1. This is
only a simple example, highlighting the mechanism used, and can be extended to more complex
simulation sequences possible only with ECL.
Original Netlist
* ECL .STEP alternative
v1 1 0 3
r1 1 2 p
c1 2 0 1u ic=0
* name needed for ECL
.plot tran res_wave = v(2)
.tran 0.1 1 uic
.param p = 1
.step param p 1k 200k 1k
.end
Steps to Create an ECL Alternative
Follow the steps below to replace the regular .STEP by an ECL step loop:
1. Parametrize the netlist by creating a testbench:
Eldo® User's Manual, 15.3 1123