Technical data

Module 13

SPGU Control and Applications

13-28

Flash Memory – Endurance Test

Measure Vth Connection

SMU3

Mech

Gate

Drain

Source

SMU1

Substrate

SMU4

PG4

Solid

State

Mech

SMU2

PG2

Solid

State

Mech

PG3

Selector or ASU ch2

Selector or ASU ch3

Selector or ASU ch1

Vth must be measured after writing or erasing. To perform the Vth measurement, all of the

selector/ASU channels must make the path to the SMU. Vth is measured at each decade, so a

mechanical relay will be used, not the solid state relay. The mechanical relay has low leakage

specifications to better match the capabilities of the SMUs.