The transient response of a crossbar array is investigated with HSPICE circuit simulation. A crossbar array contains many parasitic elements. This brief focuses on the parasitic capacitances of the selector devices and resistors. The read access time is determined for various array sizes and parasitic capacitances. The results show that the read access time increases with the array size and parasitic capacitance, particularly the selector capacitance. The effect of selector capacitance is analyzed with a time-dependent, unit-cell voltage model and simulation. The simulation results reveal that the selector capacitance has a greater effect than the resistor capacitance on the read access time because of the large time constant. The effect of the selector capacitance on the read access time remains significant for larger values of the other parasitic capacitances.
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea through the Ministry of Science, ICT and Future Planning under Grant 2014R1A2A2A01002219. The review of this brief was arranged by Editor G.-H. Koh.
© 2016 IEEE.
- Access time
- Crossbar array
- Parasitic capacitance
- Selector device