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20 nm lithography process
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The 20 nanometer (20 nm) lithography process is a half-node semiconductor manufacturing process used as a stopgap between the 22 nm and 16 nm processes. The term "20 nm" is simply a commercial name for a generation of a certain size and its technology, as opposed to gate length or half pitch. Commercial integrated circuit manufacturing using 20 nm process began in 2014. This technology superseded by commercial 16 nm process.


Process Name
1st Production
Lithography Lithography
Wafer Type
Transistor Type
Metal Layers
Gate Length (Lg)
Contacted Gate Pitch (CPP)
Minimum Metal Pitch (MMP)
SRAM bitcell High-Perf (HP)
High-Density (HD)
Low-Voltage (LV)
DRAM bitcell eDRAM
TSMC Common Platform Alliance
The Common Platform Alliance 20 nm node was a collaboration between IBM, Samsung, GlobalFoundries, Toshiba, STMicroelectronics
3Q 2014 2014
193 nm 193 nm
Yes Yes
Bulk Bulk
300 mm 300 mm
Planar Planar
0.95 V 0.9 V
Value 28 nm Δ Value 28 nm Δ
    20 nm 0.67x
90 nm 0.77x 86 nm 0.76
64 nm 0.67x 64 nm 0.71x
    0.102 µm²  
0.081 µm² 0.64x 0.081 µm² 0.68x


TSMC demonstrated their 112 Mebibit SRAM wafer from their 20 nm HKMG process at the 2013 IEEE ISSCC.

20 nm Microprocessors[edit]

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20 nm Microarchitectures[edit]

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  • Chang, Jonathan, et al. "A 20nm 112Mb SRAM in High-к metal-gate with assist circuitry for low-leakage and low-V MIN applications." Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2013 IEEE International. IEEE, 2013.
  • Shang, Huiling, et al. "High performance bulk planar 20nm CMOS technology for low power mobile applications." VLSI Technology (VLSIT), 2012 Symposium on. IEEE, 2012.