Intel 8051 manual Architectural Specification

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Architectural Specification

May 1980

© INTEL CORPORATION, 1980.

AFN-01488A-01

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Contents Architectural Specification ICE SINGLE-COMPONENT 8-BIT Microcomputer Architectural Specification and Functional DescriptionContents Architectural Overview Intelscomplete Line of SINGLE-CHIP Microcomputers AbstractEnhancing the 8048 ARCHITEC- Ture for the 80s MACRO-VIEW of the 8051 Archi Tecture On-Chip Peripheral Functions Architectural Speciffcation ancrFunctionaJ DescrlpfionRequest Microcomputer Expansion Components Ii~O,.R~~~~~~ ~ J -r-r ~r~ r =fJ ~~~--------~--~--~---I~ Architectural Specification and Functional DescriptionProgram Counter Instruction DecoderInternal Data Memory · t1 ProgramControl Section Arithmetic SectionOscillator and Timing Circuitry Boolean ProcessorParallel I/O Ports Operand Addressing~~143 136 ~ Data Transfer Operations Data Manipulation18. External Data Memory Move Operations Logic Operations21. Internal Data Memory Logic Operations Arithmetic OperationsREGplSCTER 14e--I-~--I~IMMEDArE,.j Organization of the Instruction Set Instruction SeT What the Instruction Set IsData Transfer Control Transfer 33.A Operand Addressing Modes Operand Addressing Modes & Associated OperationsMOV Interrupt SystemTFI TCON.7 External Interrupts Ports and I/O PinsAccessing External Memory Accessing External Memory-Opera- tion of Ports TsU~l ArcnneCtural specification and Functional DescriptionAccessing External Memory-Bus Cycle Timing CDV Timer/Counter Mode Selection TIMER/COUNTERConfiguring the Timer/Counter Input Serial Channel 47. Uart Interfacing Technique SCON.O Operating ModesSerial Frame Uart Error ConditionsTransmission Rate Generation Power Down Standby Operation of Internal RAM Processor Reset and InitializationEprom Programming Vee RSTNpD 8051 Instruction SET Summary Instructions That Affect Flag SettingsAll mnemonics copyrighted@ Intel Corporation