US 11,670,956 B2
Method for precharging an integrated-circuit supply, and corresponding integrated circuit
Laurent Truphemus, Pourrieres (FR); and Sebastien Ortet, Beaurecueil (FR)
Assigned to STMICROELECTRONICS (ROUSSET) SAS, Rousset (FR)
Filed by STMicroelectronics (Rousset) SAS, Rousset (FR)
Filed on Aug. 27, 2021, as Appl. No. 17/459,465.
Application 17/459,465 is a continuation of application No. 16/267,968, filed on Feb. 5, 2019, granted, now 11,139,676.
Claims priority of application No. 1850969 (FR), filed on Feb. 6, 2018.
Prior Publication US 2021/0391744 A1, Dec. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 9/00 (2006.01); G06F 1/26 (2006.01); G06F 1/30 (2006.01); G11C 5/14 (2006.01); G11C 11/4074 (2006.01); G11C 16/30 (2006.01); G11C 11/40 (2006.01)
CPC H02J 9/005 (2013.01) [G06F 1/263 (2013.01); G06F 1/30 (2013.01); G11C 5/141 (2013.01); G11C 11/4074 (2013.01); G11C 16/30 (2013.01); G11C 5/14 (2013.01); G11C 11/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An integrated circuit, comprising:
a primary supply stage comprising a primary supply node, the primary supply stage being configured to deliver a primary supply voltage to the primary supply node;
a secondary supply stage comprising a secondary supply node, the secondary supply stage being configured to deliver a secondary supply voltage to the secondary supply node;
a pre-charging circuit;
a volatile memory circuit; and
a supply-switching circuit configured to:
connect a supply of the volatile memory circuit to the primary supply node in a primary supply mode;
connect the supply of the volatile memory circuit to the secondary supply node in a secondary supply mode; and
connect the secondary supply node to the pre-charging circuit in the primary supply mode;
wherein:
the secondary supply stage is configured to supply the secondary supply node with the secondary supply voltage during the primary supply mode; and
the pre-charging circuit is configured to, in the primary supply mode, generate a pre-charging current and pass the pre-charging current to the secondary supply node, the pre-charging current being representative of a current passed by the volatile memory circuit in the secondary supply mode.