摘要:
A semiconductor integrated circuit device includes a main cell array, a fuse cell array, main cell word lines arranged at the main cell array, and fuse cell word lines arranged at the fuse cell array. The fuse cell word lines are formed in a same direction as a direction of the main cell word lines.
摘要:
A semiconductor integrated circuit device includes a nonvolatile memory cell, a source of the cell receiving a ground potential, and a gate of the cell receiving a first control signal; a transistor, a source of the transistor receiving a drain potential of the cell, and a gate of the transistor receiving a second control signal; and a controller. The controller receives a third control signal generated upon detection of power-on and outputs the first and second control signals. A potential of the first control signal changes from the ground potential to a potential different from the ground potential, which is maintained during a first period of time, and a potential of the second control signal changes from the ground potential to a potential different from the ground potential, which is maintained during a second period of time.
摘要:
A semiconductor integrated circuit device has a data storage section for storing mode setting data corresponding to products of a plurality of types, redundancy data, and so on. The redundancy storage section is made up of a nonvolatile transistor for storing the mode setting data corresponding to the products, the redundancy data, etc., a latch circuit for latching data read out from the nonvolatile transistor and generating a mode signal, and a transmission gate for transmitting the data from read out from the nonvolatile transistor to the latch circuit. The semiconductor integrated circuit device also has an internal voltage generator for generating an internal voltage. This internal voltage is used as the power supply voltage of the data storage section.
摘要:
A semiconductor integrated circuit device has a data storage section for storing mode setting data corresponding to products of a plurality of types, redundancy data, and so on. The redundancy storage section is made up of a nonvolatile transistor for storing the mode setting data corresponding to the products, the redundancy data, etc., a latch circuit for latching data read out from the nonvolatile transistor and generating a mode signal, and a transmission gate for transmitting the data from read out from the nonvolatile transistor to the latch circuit. The semiconductor integrated circuit device also has an internal voltage generator for generating an internal voltage. This internal voltage is used as the power supply voltage of the data storage section.
摘要:
A semiconductor integrated circuit device includes fuse cells arranged at a fuse cell array, a fuse cell data program and erase circuit, a fuse cell data control circuit, and fuse data latch circuits. The fuse cells include erasable and programmable nonvolatile memory cells. The fuse cell data program and erase circuit programs fuse data to the memory cells and erases the fuse data from the memory cells. The fuse cell data control circuit controls read out timing of the fuse data stored in the memory cells based on a signal generated upon detection of power-on. The fuse data latch circuits latch the fuse data read out from the memory cells.
摘要:
A semiconductor integrated circuit device includes an integrated circuit provided in a semiconductor chip and setting information memory. The setting information memory stores operation/function setting information of the integrated circuit and receives a signal generated based on power-on in reading out the operation/function setting information.
摘要:
A semiconductor integrated circuit device includes a main cell array, a fuse cell array, main cell word lines arranged at the main cell array, and fuse cell word lines arranged at the fuse cell array. The fuse cell word lines are formed in a same direction as a direction of the main cell word lines.
摘要:
A decoder circuit selectively controls the transfer gate group. The transfer gate group is stacked so as to form a tree structure having multiple stages of transfer gates and enable a monitoring bus line to be connected to any column in a memory cell array. This configuration enables the current in each memory cell to be monitored at an external pad via a single bus line, which reduces the area occupied by the bus lines, suppressing an increase in the chip size.
摘要:
A number of booster circuits to be operated out of a plurality of booster circuits are selected in accordance with a level of the boosted voltage to be provided at a common voltage output terminal of the plurality of booster circuits. With such an arrangement, fluctuations in the output voltage that can appear when a light load is applied to the voltage output terminal of the booster circuits can be effectively reduced to make the semiconductor memory device driven by the power supply circuit operate reliably. Further, one of the output terminals of intermediate voltage booster circuits is connected to the output terminal of a high voltage booster circuit. Then, a desired voltage can be obtained from the booster circuits that are implemented without using costly transistors to reduce the chip cost.
摘要:
In a booster circuit, a gate of an input-side transistor whose end is supplied with a power supply voltage is supplied with an inverted signal of a signal supplied to a signal input terminal of a booster unit at a first stage or supplied with an AND signal of the inverted signal and a booster circuit activation signal. Therefore, when the transistor at the first stage operates, the input-side transistor is turned off. Accordingly, a back flow of a current from inside the booster circuit to a power supply is prevented, so that the efficiency of the booster circuit can be improved. Further, fluctuations of the output voltage are not brought about even when the power supply voltage greatly fluctuates, so that the reliability of peripheral elements and memory cells can be improved and the allowable range of an external power supply voltage can be widened.