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Libraries Guide
Chapter 7: Design Elements (LD to NOR16)

NOR12, 16

12- and 16-Input NOR Gates with Non-Inverted Inputs

XC3000
XC4000E
XC4000X
XC5200
XC9000
Spartan
SpartanXL
Spartan2
Virtex
N/A
N/A
N/A
Macro
N/A
N/A
N/A
Macro
Macro

The 12- and 16-input NOR functions are available only with non-inverting inputs. To invert some or all inputs, use external inverters.

Refer to the “NOR2-9” section for more information on NOR functions.

Figure 7.41 NOR16 Implementation XC5200

Figure 7.42 NOR16 Implementation Spartan2, Virtex