Abstract:
Disclosed are embodiments of an e-fuse programming/re-programming circuit. In one embodiment, the e-fuse (150) has two short high atomic diffusion resistance conductor layers (110, 130) positioned on opposite sides (121, 122) and at a same end (123) of a long low atomic diffusion resistance conductor layer (120). A voltage source (170) is used to vary the polarity and, optionally, the magnitude of voltage applied to the terminals (first terminal = 170/161/110; second terminal = 170/162/130; third terminal = 170/163/proximate end 123 of conductor layer 120; and, fourth terminal = 170/164/distal end 124 of conductor layer 120) in order to control bi-directional flow of electrons within the long conductor layer and, thereby formation of opens and/or shorts at the long conductor layer-short conductor layer interfaces (125, 126). The formation of such opens and/or shorts can be used to achieve different programming states (11, 01, 10, 00). Other circuit structure embodiments incorporate e-fuses (650) with additional conductor layers and additional terminals so as to allow for even more programming states. Also disclosed are embodiments of associated e-fuse programming and re-programming methods.
Abstract:
Disclosed are embodiments of an e-fuse programming/re-programming circuit. In one embodiment, the e-fuse (150) has two short high atomic diffusion resistance conductor layers (110, 130) positioned on opposite sides (121, 122) and at a same end (123) of a long low atomic diffusion resistance conductor layer (120). A voltage source (170) is used to vary the polarity and, optionally, the magnitude of voltage applied to the terminals (first terminal = 170/161/110; second terminal = 170/162/130; third terminal = 170/163/proximate end 123 of conductor layer 120; and, fourth terminal = 170/164/distal end 124 of conductor layer 120) in order to control bi-directional flow of electrons within the long conductor layer and, thereby formation of opens and/or shorts at the long conductor layer-short conductor layer interfaces (125, 126). The formation of such opens and/or shorts can be used to achieve different programming states (11, 01, 10, 00). Other circuit structure embodiments incorporate e-fuses (650) with additional conductor layers and additional terminals so as to allow for even more programming states. Also disclosed are embodiments of associated e-fuse programming and re-programming methods.
Abstract:
Schaltkreisstruktur (100), die Folgendes umfasst: eine Sicherung (150) mit einer ersten Leiterschicht (110), mit einer zweiten Leiterschicht (120) auf der ersten Leiterschicht (110) und mit einer dritten Leiterschicht (130) oberhalb der zweiten Leiterschicht (120), wobei die erste Leiterschicht (110) und die dritte Leiterschicht (130) jeweils einen höheren Atomdiffusionswiderstand als die zweite Leiterschicht (120) aufweisen; eine Spannungsquelle (170); und elektrische Verbindungen (161–164) zwischen der Spannungsquelle (170) und der ersten Leiterschicht (110), zwischen der Spannungsquelle (170) und entgegengesetzten Enden (121, 122) der zweiten Leiterschicht (120) und zwischen der Spannungsquelle (170) und der dritten Leiterschicht (130), wobei die Spannungsquelle (170) selektiv gesteuert werden kann, damit -eine Polarität der Spannung an ausgewählten elektrischen Verbindungen (161–164) geändert werden kann, wodurch ein bidirektionaler Elektronenfluss (220, 320, 420, 520) innerhalb der zweiten Leiterschicht (120) und dadurch eine zerstörungsfreie Bildung von entweder Leitungsunterbrechungen (201, 403, 501, 503) oder Kurzschlüssen innerhalb der zweiten Leiterschicht (120) an den Grenzflächen (125, 126) zur ersten Leiterschicht (110) und zur dritten Leiterschicht (130) selektiv gesteuert wird, wodurch reversibel aufgrund diffundierender Atome von den Grenzflächen (125, 126) weg aus den Kurzschlüssen die Leitungsunterbrechungen (201, 403, 501, 503) entstehen.
Abstract:
In one embodiment of an e-fuse programming/re-programming circuit, the e-fuse has two short high atomic diffusion resistance conductor layers positioned on opposite sides and at a same end of a long low atomic diffusion resistance conductor layer. A voltage source is used to vary the polarity and, optionally, the magnitude of voltage applied to the terminals in order to control bi-directional flow of electrons within the long conductor layer and, thereby formation of opens and/or shorts at the long conductor layer-short conductor layer interfaces. The formation of such opens and/or shorts can be used to achieve different programming states. Other circuit structure embodiments incorporate e-fuses with additional conductor layers and additional terminals so as to allow for even more programming states. Also disclosed are embodiments of associated e-fuse programming and re-programming methods.
Abstract:
Bi-directional back-to-back stacked SCRs for high-voltage pin ESD protection, methods of manufacture and design structures are provided. The device includes a symmetrical bi-directional back-to-back stacked silicon controlled rectifier (SCR). An anode (10a) of a first of the back-to-back stacked SCR (10) is connected to an input (30). An anode (20a) of a second of the back-to-back stacked SCR (20) is connected to ground (GND). Cathodes (10b, 20b) of the first and second of the back- to-back stacked SCR are connected together. Each of the symmetrical bi-directional back-to-back SCRs include a pair of diodes (Di, D2) directing current towards the cathodes which, upon application of a voltage, become reverse biased effectively deactivating elements from one of the symmetrical bi-directional back-to-back SCRs while the diodes (D3, D4) of another of the symmetrical bi-directional back-to-back SCRs direct current in the same direction as the reverse biased diodes.