US 12,237,038 B2
Local sensing amplifier and memory
Weibing Shang, Hefei (CN)
Assigned to CHANGXIN MEMORY TECHNOLOGIES, INC., Hefei (CN)
Filed by CHANGXIN MEMORY TECHNOLOGIES, INC., Hefei (CN)
Filed on Jul. 19, 2022, as Appl. No. 17/867,687.
Application 17/867,687 is a continuation of application No. PCT/CN2022/097964, filed on Jun. 9, 2022.
Claims priority of application No. 202210179341.4 (CN), filed on Feb. 25, 2022.
Prior Publication US 2023/0274770 A1, Aug. 31, 2023
Int. Cl. G11C 7/06 (2006.01); G11C 7/22 (2006.01)
CPC G11C 7/06 (2013.01) [G11C 7/22 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A local sensing amplifier connected to a global signal line and connected to a sense amplifier array by means of a local signal line and a complementary local signal line, the local sensing amplifier being configured to transmit a signal on the local signal line to the global signal line when a read control signal is received, and to transmit a signal on the global signal line to the local signal line when a write control signal is received, the local sensing amplifier comprising:
a precharge circuit connected to a preset voltage source, the local signal line and the complementary local signal line, the preset voltage source being configured to provide a first voltage in a read-write interval and provide a second voltage in an idle period, the precharge circuit being configured to transmit the first voltage to the local signal line and the complementary local signal line in the read-write interval, and to transmit the second voltage to the local signal line and the complementary local signal line in the idle period; and, wherein the second voltage is smaller than the first voltage; and the preset voltage source is arranged in a row decoding and control circuit, the preset voltage source comprising:
a first switch element, a first terminal of the first switch element being connected to the first voltage, a second terminal of the first switch element being connected to an output terminal of the preset voltage source, and a control terminal of the first switch element being connected to a first voltage output control signal;
a second switch element, a first terminal of the second switch element being connected to the second voltage, a second terminal of the second switch element being connected to the output terminal of the preset voltage source, and a control terminal of the second switch element being connected to a second voltage output control signal; and
a voltage switching subcircuit connected to the first switch element and the second switch element, the voltage switching subcircuit being configured to output the first voltage output control signal in the read-write interval, and output the second voltage output control signal in the idle period.