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US 6,720,820 B1Granted
Block parallel efuse apparatus blown with serial data input
AssigneeNanya Technology Corporation
InventorsYu Meng Chuang, Mang-Shiang Wang
Life of this patent
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Abstract
A block parallel efuse apparatus blown with serial data input. The block parallel apparatus includes a high voltage source, efuse circuits, a plurality of multiplex, registers, and an input-output terminal, wherein each efuse circuit includes an efuse, a blown-control terminal, an input terminal, and an output terminal. Each efuse is coupled between the high voltage source and the output terminal of the efuse circuit.
Claims13
A block parallel efuse apparatus comprising:
- a high voltage source;
- a clock control line;
- a blown control line;
- a plurality of efuse circuits, each having a efuse, a blown control terminal, an input, and an output, the efuse coupled between the high voltage source and the output, the blown control terminal coupled to the blown control line;
- a plurality of multiplexes, each having a first input and a second input, a control terminal, and an output, the second input coupled to the output of the efuse circuit, the control terminal receiving a load signal;
- a plurality of registers, each having an input, an output, and a control terminal, the input of each register coupled to the output of each corresponding multiplex, the output of each register coupled to the first input of another corresponding multiplex and coupled to the input of the corresponding efuse circuit, the control terminal of each register coupled to the clock control line;
- and
- an input-output terminal, coupled between the first input of the first multiplex and the output of the last register, thereby data is input or output serially.
5 more elements
A block parallel efuse apparatus comprising:
- a high voltage source;
- a clock control line;
- a blown control line;
- a shift register, having a first input, a plurality of second inputs, a clock control terminal, a selective terminal, and a plurality of outputs, the first input being used for feeding serial data,
- a plurality of second inputs being parallel inputs, the selective terminal receiving a load signal to select the first input or the plurality of inputs to be enabled, the clock control terminal coupled to the clock control line;
- a plurality of efuse circuits, each having an efuse, a blown control terminal, an input, and an output, the efuse coupled between the high voltage source and the output, the blown control terminal coupled to the blown control line, the input of each efuse circuit coupled to each corresponding output of the shift register;
- and
- an input-output terminal, coupled to the first input of the shift register, thereby data is input or output serially.
5 more elements
Dependencies are inferred from the claim text.