The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 1981
Filed:
Aug. 09, 1979
Kuppuswamy Raghunathan, Austin, TX (US);
Philip S Smith, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A CMOS microprocessor is provided having a plurality of registers wherein the registers contain RAM type storage cells resulting in compact, fully static registers. In most cases the registers are connected to two buses. A 5 bit temporary register and an 8 bit program counter are each connected to three buses. An incrementer can provide an increment or decrement function but cannot be used to store functions. A bit code generator is connected to a data bus thereby allowing any one selected data bit carried by the data bus to be modified. A 5 bit high order program counter is capable of directly transferring its contents to the 5 bit temporary register. An 8 bit low order incrementer is capable of incrementing three different registers which are an address storage register, a program counter, and a stack pointer. A 5 bit high order incrementer is also capable of incrementing three registers which are an address storage register, a program counter, and a temporary register. An ALU has a first and a second input, which because of the bus structure used, can both receive data simultaneously.