US 12,224,022 B2
Fuse block unit and fuse block system and memory device
Tsung-I Tu, Tainan (TW)
Assigned to WINDBOND ELECTRONICS CORP., Taichung (TW)
Filed by Winbond Electronics Corp., Taichung (TW)
Filed on Mar. 29, 2023, as Appl. No. 18/191,986.
Claims priority of application No. 111114783 (TW), filed on Apr. 19, 2022.
Prior Publication US 2023/0335206 A1, Oct. 19, 2023
Int. Cl. G11C 17/14 (2006.01)
CPC G11C 17/143 (2013.01) 20 Claims
OG exemplary drawing
 
1. A fuse block unit, comprising:
a first laser fuse, outputting first data;
a first laser latch, coupled to the first laser fuse;
a second laser fuse, outputting second data;
a second laser latch, coupled to the second laser fuse; and
a share flip-flop, comprising:
a first switch element, selectively coupling the first laser latch to a first node according to a first load voltage;
a second switch element, selectively coupling the second laser latch to the first node according to a second load voltage, wherein high logic pulses of the second load voltage do not occur simultaneously with those of the first load voltage;
a third switch element, selectively coupling an input node to the first node according to an inverted shift voltage;
a first latch, coupled between the first node and a second node;
a fourth switch element, selectively coupling the second node to a third node according to a shift voltage; and
a second latch, coupled between the third node and an output node.