PVTM-based wide voltage range clock stretching circuit
US10033362B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2017 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | Feb 24, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/18
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A PVTM-based wide voltage range clock stretching circuit is disclosed. The circuit consists of a PVTM circuit module, a phase clock generation module, a clock synchronization selection module and a control module. The PVTM circuit module monitors in real time the delay information of an on-chip delay unit to monitor the operating environment of the circuit, and feeds the delay information back to the control module. Under the control of a clock stretching enable signal and a clock stretching extent signal, the control module selects a target phase clock from the clocks generated by the phase clock generation module in accordance with the feedback from the PVTM, enabling the stretching of system clock within a single cycle in different PVT conditions. Sophisticated gate devices are not required, and the cost of area and power consumption are kept to minimal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.