US 12,224,023 B2
One time programmable (OTP) low power circuits and methods for providing bias voltages to wordlines
Himanshu Saxena, Bangalore (IN); Ankur Gupta, Bangalore (IN); and Mukul Agarwal, Bangalore (IN)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Nov. 2, 2022, as Appl. No. 17/979,051.
Claims priority of application No. 202241050091 (IN), filed on Sep. 1, 2022.
Prior Publication US 2024/0079070 A1, Mar. 7, 2024
Int. Cl. G11C 17/18 (2006.01); G11C 17/16 (2006.01)
CPC G11C 17/18 (2013.01) [G11C 17/16 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for providing bias voltages to a one time programmable (OTP) low power circuit using a single regulator, the method comprising:
determining, by a combinational logic controller, whether the OTP low power circuit is in a read mode or a programmable mode;
responsive to the OTP low power circuit being in the read mode, providing, by a combinational logic controller, a first bias voltage to programmable word lines through the single regulator, and a second bias voltage to read lines, wherein the second bias voltage is generated from the single regulator and passed through current-controlled-voltage drop; and
responsive to the OTP low power circuit being in the programmable mode, providing, by the combinational logic controller, a third bias voltage to the programmable word lines from a charge pump, and the first bias voltage to the read lines from the single regulator.