Method for expanding addressing capability of 8051 serial singlechip

Abstract

The invention discloses a method for expanding the addressing capability of a 8051 serial singlechip. A logic address of an access data region of the 8051 serial singlechip is divided into four units 16K byte in size to obtain four logic address fields; a logic address of an access code region of the 8051 serial singlechip is divided into four units 16K byte in size to obtain four logic address fields; and the eight logic address fields can be mapped to/on any position of a 1M physical address space. The valid length of each logic address field can be configured, and when the operation exceeds the valid length of the logic address field, interruption which can not be shielded is generated. By using the method for expanding the addressing capability of the 8051 serial singlechip, the addressing capability of the data region and the code region can be effectively expanded, and the application and flexibility are increased.

Description

technical field [0001] The invention relates to the field of single-chip microcomputers, in particular to a method for expanding the addressing capability of 8051 series single-chip microcomputers. Background technique [0002] With the development of semiconductor and electronic technology, more and more functional blocks are integrated on the SOC (system on chip) chip, which makes the software system on the SOC chip more and more complex, the amount of code and the data used by the code Areas and data volumes are also increasing. 8051 series single-chip microcomputer, as a widely used central processing unit, has only 64K bytes of addressing ability in the data area and code area, which makes its application on SOC chips encounter more and more challenges. [0003] At the same time, as users of SOC chips, they are gradually becoming diversified and personalized. SOC chips have different levels and different users with different needs. Not the same. This also causes mult...

AI Technical Summary

Problems solved by technology

8051 series single-chip microcomputer, as a widely used central processing unit, has only 64K bytes of addressing ability in the data area and code area, which makes its application on SOC chips encounter more and more challenges.

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