Primitive: I/O Pullup
- PRIMITIVE_GROUP: I/O
- PRIMITIVE_SUBGROUP: WEAK_DRIVER
- Families: UltraScale, UltraScale+
Introduction
The design element is a weak pullup element that pulls an undriven I/O to a logic one state. For example, if the I/O is 3-stated and not driven by any other element, a logic 1 will exist on the I/O.
Port Descriptions
| Port | Direction | Width | Function |
|---|---|---|---|
| O | Output | 1 | Pullup output. Connect directly to a top-level port in the design. |
Design Entry Method
| Instantiation | Yes |
| Inference | Yes, via property |
| IP and IP Integrator Catalog | No |