Large scale integrated circuit with sense amplifier circuits for low voltage operation

a technology of amplifier circuits and integrated circuits, applied in the field of large-scale integrated circuits, can solve the problems of not being able to provide the system with the necessary performance of the system for the operation outside at 5 v, and the operation speed is not guaranteed, so as to achieve the effect of lowering the operation voltage of the system

Inactive Publication Date: 2002-03-19
PS4 LUXCO SARL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention intends to lower the operation voltage of a system provided on a monolithic chip so

Problems solved by technology

This is because the dynamic RAM requires a refresh operation even during data retention due to its dynamic operation and so does not permit only the operation voltage during data retention to be lowered unlike the static RAM.
The microprocessor and static RAM as mentioned above have a wide range of the operating power-supply voltage of 2-5 V. However, since they are designed around the power supply voltage of 5 V, the operatio

Method used

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  • Large scale integrated circuit with sense amplifier circuits for low voltage operation
  • Large scale integrated circuit with sense amplifier circuits for low voltage operation
  • Large scale integrated circuit with sense amplifier circuits for low voltage operation

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embodiments

FIGS. 1A and 1B are block diagrams for explaining the basic idea of an LSI chip in accordance with the present invention. In these figures, numeral 1 is an LSI chip which has functions of data storage and / or data processing. This LSI chip may be in any form of an memory LSI including a dynamic or static RAM, a serial access memory (SAM) and read-only-memory (ROM); a logic LSI including a microprocessor (MPU), a memory management unit (MMU) and a floating point operation unit (FPU); and a system LSI in which a plurality of these LSIs are integrated. The individual devices constituting the LSI chip may be bipolar transistors, metal-insulator-semiconductor (MIS) transistors (generally, metal-oxide-semiconductor (MOS) FET), combination of these devices, or devices or material other than Si e.g. GaAs. Numeral 2 is an exemplary power supply circuit which detects a drop of an external power supply voltage (Vext) to shift the LSI chip into a back-up state by a battery. This power supply cir...

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Abstract

Disclosed is a one-chip ULSI which can carry out the fixed operation in a wide range of power supply voltage (1 V to 5.5 V). This one-chip ULSI is composed of a voltage converter circuit(s) which serves to a fixed internal voltage for a wide range of power supply voltage, an input/output buffer which can be adapted to several input/output levels, a dynamid RAM(s) which can operate at a power supply voltage of 2 V or less, etc. This one-chip ULSI can be applied to compact and portable electronic devices such as a lap-top type personal computer, an electronic pocket note book, a solid-state camera, etc.

Description

BACKGROUND OF THE INVENTIONThe present invention relates to a large scale integrated circuit, and more particularly to a high-density integrated semiconductor device constituted by a voltage converter circuit and miniaturized devices (devices with small dimension) which can keep up with a wide range of an operating power-supply voltage and kinds of power supplies, i.e. a large scale integrated circuit in which integrated on a monolithic chip are a microcomputer, a logic circuit, a dynamic RAM (random access memory), a static RAM, a ROM (read-only memory), etc.In recent years, onto the market have come portable electronic machines such as a lap-top type personal computer, an electronic pocket notebook, etc., and portable electronic media machines such as a solid-state voice recorder which performs voice recording without using a magnetic medium, a solid-state camera (electronic still camera) which performs image recording without using the magnetic medium. In order for these portable...

Claims

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Application Information

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IPC IPC(8): G11C11/4096G11C5/14G11C11/4074G11C11/409G11C11/407G11C11/406
CPCG11C5/147G11C11/406G11C11/4074G11C11/4096
Inventor ETOH, JUNITOH, KIYOOKAWAJIRI, YOSHIKINAKAGOME, YOSHINOBUKUME, EIJITANAKA, HITOSHI
Owner PS4 LUXCO SARL
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