Ovpcontrol User Library - Keithley 4200A-SCS Reference Manual

Model 4200A-SCS Parameter Analyzer Reference Manual
User module
pundEndurance
pundTest
reramEndurance
reramForming
reramFormingCV
reramSweep
vt_ext

OVPControl user library

The user module in the OVPControl user library allows you to set the maximum voltage of the SMU.
SetOVPLevel user module
User module
SetOVPLevel
4200A-901-01 Rev. C / February 2017
Description
This routine performs a device endurance test that runs fatigue pulse trains in
between multiple PUND tests. A preliminary PUND test measurment is taken
(iteration of 0), followed by the fatigue voltage pulse train. The PUND test is
composed of a 17 segment voltage pulse waveform, with two positive pulses
to a user-specified Vp followed by two negative pulses to -Vp. Each PUND test
calculates P, Pa, U, Ua, N, Na, D, Da, Psw, and Qsw. The fatigue pulse train
is made by looping through a 9-segment voltage pulse waveform with one
positive pulse to a user-specified V
number of times this waveform is repeated between each PUND test is
determined by the specified number of loops divided logarithmically by the
total number of fatigue pulse trains.
This routine performs a pulse V waveform PUND test for FRAM, measuring
the full voltage and current waveforms. It also calculates P, Pa, U, Ua, N, Na,
D, Da, Psw, and Qsw. The PUND test is composed of a 17-segment voltage
pulse waveform with two positive pulses from 0 V to user-specified Vp,
followed by two negative pulses to -Vp.
The reramEndurance routine performs a series of double sweeps using the
same parameters used for the single sweeps, as described in the
reramSweep routine.
This routine slowly ramps a voltage to a specified value while measuring the
current constantly to see if the device has formed.
This routine slowly ramps a voltage to a specified value while measuring the
current constantly to see if the device has formed.
The reramSweep sweep performs a double sweep with a flat section at the
peak of each sweep. To test a ReRAM device, choose appropriate values for
the two peaks, either positive or negative, and then set the timing you would
like to implement.
This function returns the transistor threshold voltage using the maximum Gm
method.
Description
Sets the 4200-SMU or 4210-SMU overvoltage protection (OVP) maximum
voltage. The OVP is an analog circuit that limits the SMU voltage output
regardless of what the SMU is sourcing and measuring. Depending on the
voltage that the OVP is set to, the SMU clamps the output voltage to one of
the built-in voltage limits.
and one negative pulse to -V
fat
Section 6: Clarius
. The
fat
6-315