CN2350805Y

CN2350805Y - High capacity memory managing device for single chip computer

Info

Publication number: CN2350805Y
Application number: CN 98208118
Authority: CN
Inventors: 朱健
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-11
Filing date: 1998-09-11
Publication date: 1999-11-24
Anticipated expiration: 2008-09-11

Abstract

The utility model relates to a memory managing device for a single chip computer, particularly a high capacity memory managing device which can expand the storage space of the existing single chip computer. The utility model is characterized in that an integrated circuit U2 of a program extension controller, the input end of which is directly connected with a control signal end of a microprocessor U1 is additionally arranged in a single chip computer circuit, and outputted strobe signals Q0 to QN are directly connected with a memory M0 and an extended memory control end CC (or an extended transport address). Because the integrated circuit of the program extension controller is additionally arranged, the normal operation of the over capacity memory can be effectively managed, and the whole single chip computer works in an order management process. Because of the expansion of the storage space, the single chip computer can operate large programs and store major data, which is favorable for use in more fields.

Description

Single-chip microcomputer high-capacity storage management devices

The utility model relates to a kind of memory management unit of single-chip microcomputer, and the particularly a kind of high-capacity storage management devices that can expand existing single-chip microcomputer storage space can be applicable to as 8051 single-chip microcomputers series and compatible single-chip microcomputer thereof.

Single-chip microcomputer is widely used in occasions such as Industry Control, the automatic operational management of civil electric appliance product, the storage space of single-chip microcomputer all is that the addressing of address ability by single-chip microcomputer is determined, it is a fixed numbers, address wire as 16, its storage space is 64KB to the maximum, when need move large-scale control program and more, the storage data time, required work can't be competent at regard to showing too little in the space of storer, causes many application scenarios can't utilize single-chip microcomputer.

In view of this, how to make the memory span expansion of single-chip microcomputer, can also not influence the operation of single-chip microcomputer internal processes simultaneously, and simple in structure, and this novel grinding is created motivation place just.

The utility model designer, does a brand-new design and constitutes on the basis of feasibility study repeatedly by means of being engaged in the practical experience that all kinds of electric equipment products are researched and produced processing and other fields for many years, gets this novel generation eventually.

At the deficiencies in the prior art, this novel purpose is a kind of single-chip microcomputer high-capacity storage management devices of design, can effectively manage the storage space of single-chip microcomputer expansion, and does not influence the running of single-chip microcomputer internal control program, and simple in structure, easy to use.

The purpose of this utility model can be by following realization, the utility model is set up a program extending controller integrated circuit U2 in single chip circuit, its input end directly is connected with microprocessor U1 control signal end, its output gating signal Q0 ... QN directly is connected with the storer control end CC of single-chip microcomputer storer M0 and expansion or the memory address of expansion.

Further illustrate the utility model below in conjunction with accompanying drawing.

Fig. 1 is the utility model circuit structure diagram.

The utility model is set up a program extending controller integrated circuit U2 in single chip circuit, its input end directly is connected with microprocessor U1 control signal end, its output gating signal Q0 ... QN directly is connected with the extended address line M1-MN control end CC of the storer of single-chip microcomputer basic storage M0 and expansion; The own storer of single-chip microcomputer is M0, the addressing pointer of single-chip microcomputer can only be in the scope of M0 in addressing, for the extension storage space, the storer M1 that in the single-chip microcomputer expansion slot, can peg graft and expand ... MN or jumbo memory, when selecting a certain extended memory, the addressing pointer of single-chip microcomputer can this storer of addressing all storage spaces, the utility model program extending controller U2 is used for the control signal T0 with microprocessor U1 ... TM is transformed into gating signal Q0 ... QN, the storer of selection duty.

Program extending controller U2 is when meeting external interrupt signal, single-chip microcomputer response external look-at-me, the memory block that Single Chip Microcomputer (SCM) program was moved when the memory of degree extending controller was interrupted, and after the End of Interrupt, the program extending controller receives the Interrupt Process end signal of single-chip microcomputer, the extended address pointer state before recovering to interrupt; FS is a latch, and RAM is a random access memory.

The utility model is by setting up a program extending controller integrated circuit, can effectively manage the normal operation of over capacity storer, whole single-chip microcomputer is operated in the orderly management process, and because the expansion of storage space, single-chip microcomputer can move large program, stores more data, during the operation large program, can manage external interrupt handling procedure zone and normal extender zone effectively, improve operating factor of memory space, help more field and use.

In sum, this novel can utilization is set up a program extending controller integrated circuit, uses this novel performance to increase substantially, and application is more extensive, and is easy to use.Obviously originally novel is the new design of a kind of novelty, progress and dark tool practicality.The above is this novel specific embodiment and the know-why of being used, the equivalence that the novel conception of Ruo Yiben is done changes, when the function that it produced does not exceed spiritual that instructions and accompanying drawing contain yet, all should be in this novel scope, explanation hereby.

Claims

1, a kind of single-chip microcomputer high-capacity storage management devices, it is characterized in that in single chip circuit, setting up a program extending controller integrated circuit U2, its input end directly is connected with microprocessor U1 control signal end, its output gating signal Q0 ... QN directly is connected with the storer control end CC of single-chip microcomputer storer M0 and expansion or the memory address of expansion.