Intel 8080 manual Characteristics and Waveforms TA = oc to +70C, vcc = +5V ±5%

Page 231

SCHOTTKY BIPOLAR 8214

A.C. CHARACTERISTICS AND WAVEFORMS TA = o°c to +70°C, vcc = +5V ±5%

 

 

 

Limits

 

 

Symbol

Parameter

Min.

Typ.[1]

Max.

Unit

tCY

ClK Cycle Time

80

50

 

ns

tpw

ClK, ECS, INT Pulse Width

25

15

 

ns

tlSS

INTE Setup Time to ClK

16

12

 

ns

t,SH

INTE Hold Time after ClK

20

10

 

ns

tETCS[2]

ETlG Setup Time to ClK

25

12

 

ns

tETCH[2]

ETlG Hold Time After ClK

20

10

 

ns

tECCS[2]

ECS Setup Time to ClK

80

50

 

ns

tECCH[3]

ECS Hold Time After ClK

0

 

 

ns

tECRS[3]

ECS Setup Time to ClK

110

70

 

ns

tECRH [3]

ECS Hold Time After ClK

0

 

 

 

tECSS[2]

ECS Setup Time to ClK

75

70

 

ns

tECSH[2]

ECS Hold Time After ClK

0

 

 

ns

tOCS[2]

SGS and 80-82 Setup Time to ClK

70

50

 

ns

tOCH[2]

SGS and 80-82 Hold Time After ClK

0

 

 

ns

tRCS[31

Ro-R 7 Setup Time to ClK

90

55

 

ns

tRCH[3]

Ro-R 7 Hold Time After ClK

0

 

 

ns

tiCS

INT Setup Time to ClK

55

35

 

ns

tCI

ClK to INT Propagation Delay

 

15

25

ns

tRIS[41

Ro -R 7 Setup Time to INT

10

0

 

ns

tRIH[4]

Ro-R7 Hold Time After INT

35

20

 

ns

tRA

Ro-R 7 to Ao·A2 Propagation Delay

 

80

100

ns

tELA

ElR to Ao -A2 Propagation Delay

 

40

55

ns

tECA

ECS to Ao-A2 Propagation Delay

 

100

120

ns

tETA

ETlG to Ao-A2 Propagation Delay

 

35

70

ns

tOECS[41

SGS and 80-82 Setup Time to ECS

15

10

 

ns

tOECH[4]

SGS and 8 0 -82 Hold Time After ECS

15

10

 

ns

tREN

Ro -R 7 to EN lG Propagation Delay

 

45

70

ns

tETEN

ETlG to EN lG Propagation Delay

 

20

25

ns

tECRN

ECS to EN lG Propagation Delay

 

85

90

ns

tECSN

ECS to EN lG Propagation Delay

 

35

55

ns

CAPACITANCE [5]

 

 

 

 

 

 

 

Limits

 

 

Symbol

Parameter

Min.

TypJ1]

Max

Unit

C,N

Input Capacitance

 

5

10

pF

COUT

Output Capacitance

 

7

12

pF

TEST CONDITIONS: VBIAS = 2.5V, Vce = 5V, TA = 25°C, f = 1 MHz

NOTE 5. This parameter is periodically sampled and not 100% tested.

5·161

Image 231
Contents Page Programmable Peripheral Interface Clock Generator for 8080ASystem Controller for 8080A Programmable Communication InterfaceContents 127 Peri pheralsChapter Packaging Information Page Advantages of Designing With Microcomputers Microcomputer Design AidsConventional System Programmed Logic Applications Example Iii1IIII~Iff1 Peripheral Devices Encountered ApplicationTypical Computer System Architecture of a CPUAccumulator Instruction Register and Decoder Program Counter Jumps, Subroutines and the StackComputer Operations Control CircuitryAddress Registers Arithmetic/Logic Unit ALUWait memory synchronization Instruction FetchMemory Read Memory WritePage Page 8080 Photomicrograph With Pin Designations INTE~Registers Architecture of the 8080 CPUProcessor Cycle Arithmetic and Logic Unit ALUInstruction Register and Control Data Bus BufferMachine Cycle Identification Halt State Transition SequenceStatus Word Chart Status Bit DefinitionsStatus Information Definition ?~~ CPU State Transition DiagramRr\ ONE ,----- ~ ~2. State Definitions State Associated ActivitiesInterrupt Sequences RLrL- rL rL rL-rL- rLrL¢2 -+--sLJJlL-..rrL~LJLLJTLJJ\.lJL Hold Sequences Halt SequencesSTART-UP of the 8080 CPU 11. Halt Timing ~~~~t==p 001 STATUS6 Xram ~iA~~~11 ~iA~~~11~iA~~ll,12 ~A~~~ll111 000 001 010 011 100 101 ValueBasic System Operation Typical Computer System Block DiagramClock Generator Design CPU Module Design8080 CPU Clock Generator and High Level DriverClK 0.......-..-.-----.. tf1A TTL ~50nsHigh Level Driver Design Ststb !1 Page Interfacing the 8080 CPU to Memory and I/O Devices ROM InterfaceRAM Interface Ill Memory Mapped I/O InterfaceGeneral Theory Isolated I/OAddressing Interface ExampleMemr to 15 Format 13 Format8080 Instruction SET Instruction and Data FormatsAddressing Modes Byte OneByte Two Byte Three I D7All Symbols and AbbreviationsSymbols Meaning Description FormatReg. indirect Content of register r2 is moved to register r1Data Transfer Group MOV r1, r2 Move Register0 I R 0 I R p0 I 0 o 0 IArithmetic Group 1 I0 I D I D R 0 ICycles States Addressing reg. indirect Flags Z,S,P ,CY,AC I ILogical Group OCR M Decrement memory1 1 1 I 0 I 1 I 1 II 1 I 1 o I 1 I 1 I ~11~Cycles States Flags none 0 I 1 I0 I 0 1 I 0 I 0 I000 Branch GroupI c c I c I 0 I 0 I Ccondition addrSP ~ SP + 1 I R Stack, I/O, and Machine Control GroupI 1 o Push rpCycles States Flags None Exchange stack top with Hand L~ SP + ~ dataInstruction SET Programmable Peripheral Interface 8224 8080A-1 8228 8080A-2 8080A M8080-A Page PIN Names Schottky BipolarClock Generator Functional DescriptionGeneral OscillatorStstb Status Strobe Power-On Reset and Ready Flip-FlopsCrystal Requirements Characteristics8pF InputTORS tORH tOR FMAX Characteristics For tCY = 488.28 nsExample T42 T01 T02 T03 TossDbin PIN Configuration Block DiagramBlock GeneralInta None Control SignalsHlda to Read Status Outputs Characteristics TA = Oc to 70C Vee = 5V ±5%TE~r WaveformsVCC=5V GoUTStstb VTHGND ---. r ·-c?oo .H Intel Silicon Gate MOS 8080 aVee Vss8080A Functional PIN Definition IOl = 1.9mA on all outputs CharacteristicsAbsolute Maximum RATINGS· Capacitance~~1 t CY =..... -r-DATAIN~I~~~ Timing WaveformsTypical ~ Output Delay VS. a Capacitance CharacteristicsTypical Instructions Instruction SETSummary of Processor Instructions Silicon Gate MOS 8080.AInfel Silicon Gate MOS 8080A-1 Symbol Parameter Typ MaxUnit Fft~l ~tOF.I~-t TYPICAL!J. Output Delay VS. ~ Capacitance Infel Silicon Gate MOS 8080 A-2 VAOOR/OATA = VSS + O.45V +10Cout J1AUnit Test Condition Symbol Parameter MinMin. Max. Unit Test Condition Typical ~ Output Delay VS. ~ CapacitancePage Intel . Silicon Gate MOS M8080A Interrupt instructions Immediate mode or I/O instructionsRegister to regist~r, memory refer Ence, arithmetic or logical, rotateLlf17 Summary of Processor InstructionsM8080A Functional PIN Definition Silicon Gate MOS M8080AAbsolute Maximum Ratings IOL = 1.9mA on all outputsOperation Symbol Parameter Min. Max Unit Test Condition ~I~ Silicon Gate MOS M8080APage ROMs 8702A 8704 8708 8316A Page Silicon Gate MOS 8702A Operating Characteristics PIN ConnectionsVoo = V ce Switching Characteristics1N= Vee ~10%Cs=o.~ \ \SYMBOLTESTMIN. TYP. MAX. Unit Conditions Operating Characteristics for Programming OperationSymbol Test Characteristics for Programming OperationProgram Operation Switching Characteristics for Programming OperationCS = OV Programming Operation of the 8702AProgramming Instructions for the 8702A Operation of the 8702A in Program ModeII. Programming of the 8702A Using Intel Microcomputers III a Erasing ProcedurePage PIN Names PIN Configurations Block DiagramVOH1 CommentIII IBBMax Unit Symbol Parameter Typ. Max. Unit ConditionsTest Conditions WaveformsParameter Min TpF Program Pulse Fall TimeProgramming Current RnA Program Pulse Amplitude Read/Program/Read Transitions CS/WE = +12V+-------1 PEEEf!1EJEZPlEzz$m=2!·m·· Icc 150 rSilicon Gate MOS Outa CommentMAX Unit CS=O.O~~~H --4!~--~N-~-TA-AL-~-DU-T--~\ 100 ns 7001 JJ.s200ns 500ns 300 ns Cs .. o.~ ~r Typical CharacteristicsSilicon Gate MOS ILO IlclIlpc IlkcConditions of Test for Characteristics CoUTCIN ~ ~ ~ Customer Number Oate Mask Option SpecificationsMarking Pppp79-80 ~ r ------ + -- t --- . L . ------ rJTitle Card BlankIntel Silicon Gate MOS ROM 8316A PIN Configuration Block Diagram400 Conditions of Test forCAPACITANCE2 TA = 25C, f = 1 MHz Waveforms OU~TVALIDILICO.N Gate MOS ROM 8316A Typical D.C. CharacteristicsMask Option Speci Fications CustomerNumber Oate STOCOM~ANY Name Title CardRAMs Page Silicon Gate MOS PIN Configuration Logic Symbol Block Diagram+----+ ~E~~=~utP~-t-·7~igh-~\/oltage-~------ ---- --i2-+---=~== ~== OC 10H = -150 p.A00 ~ Conditions of TestPage Silicon Gate MOS PIN Configuration Logic Symbol Block DiagramICC2 Symbol Parameter Min. Typ.rIII ICC1Timing Measurement Reference Level Volt Write 1~-tAW--.I-----I550 200 Input Pulse Rise and Fall Times 20nsecPage Silicon Gate MOS TA = OOC to +70C, Vee = 5V ±5% unless otherwise specified Power Dissipation Watt5V to +7V CommentConditions of Test 85o-·-···T+--~~~TL~~~EEt~~~P-.± Capacitance T a = 25C, f = 1MHz~~~b~.J Typical A.C. CharacteristicsSilicon Gate MOS 8102A-4 TA = OC to +70 o e, Vcc = 5V ±5% unless otherwise specified 450 230300 Output Source Current VS VIN Limits VS. TemperatureAccess Time VS Ambient Temperature Access Time VS LOAD·CAPACITANCEPIN Configuration Logic Symbol Block Diagram Fully Decoded Random Access BIT Dynamic MemoryIOOAV2 Silicon Gate MOS 81078·4IMP~ri~~CE II.~Write Cycle Read Cycle4000 Ref =Typical Characteristics Symbol Parameter Min Max RWc 590 CDNumbers in parentheses are for minimum cycle timing in ns System Interfaces and Filtering Power DissipationStandby Power RefreshTypical System BIT 256 x 4 Static Cmos RAM Icccr ICC2VIH VOL VOH VORTiming Measurement Reference Level Volt Input Pulse Rise and Fall Times 20nsec~I----- t CW2 ------ . t Schottky Bipolar PIN Configuration Logic SymbolVoo- --- ---T Conditions of TestAll driver outputs are in the state indicated Power Supply Current Drain and Power DissipationTypical System Dynamic Memory Refresh Controller Page 8212 8255 8251 Page EIGHT-BIT INPUT/OUTPUT Port PIN Configuration Logic DiagramOS2 Functional DescriptionGated Buffer Basic Schematic SymbolsII. Gated Buffer 3·STATE Are 3-stateBI-DIRECTIONAL BUS Driver III. Bi-Directional Bus DriverIV. Interrupting Input Port Interrupt Instruction PortOvJ \.. -4~ VI. Output Port With Hand-ShakingVII Status Latch 8080 4System Viii SystemOUT VeeIX System 1G~D L-~ DalN-t?!NrJAbsolute Maximum Ratings· Characteristics052 ~ Typical CharacteristicsTpw OUTSwitching Characteristics TA = OC to + 75C Vee = +5V ± 5%12 pF ~~~lEI~S 1-- +SV Programmable Peripheral InterfaceBasic Functional Description GeneralData Bus Buffer Read/Write and Control LogicPorts A, B, and C ResetPIN Configuration Group a and Group B ControlsPA 7 ·pAo Mode SelectionSingle Bit Set/Reset Feature Detailed Operational DescriptionOperating Modes Mode 0 Basic Input/Output Mode 0 TimingInterrupt Control Functions Mode 0 Configurations Mode 0 Port Definition Chart119 · / ,4 Operating Modes Mode 1 Strobed Input/OutputInte a Input Control Signal DefinitionIBF Input Buffer Full F/F Intr Interrupt RequestIntea Output Control Signal DefinitionOutput Operations Combinations of ModeBi-Directional Bus I/O Control Signal Definition Operating ModesMode 2 Bi-directional Timing Mode 2 Control WordMode 2 and Mode 0 Output Mode 2 CombinationsReading Port C Status Special Mode Combination ConsiderationsMode Definition Summary Table Source Current Capability on Port B and Port CKeyboard and Terminal Address Interface ApplicationsPrinter Interface Keyboard and Display Interface~.LEFT/RIGHT PCOSilicon Gate MOS Time From STB = 0 To IBF Characteristics TA = oc to 70C Vee = +5V ±5% vss = OVVil Input Low Voltage Input High Voltage Val Output Low Voltage IOl = 1.6mAMode 0 Basic Input Mode 1 Strobed Input Mode 2 Bi-directional Page Programmable Communication Interface ClK Clock Reset ResetGeneral ReadlWrite Control logicDTR Data Termin·al Ready Modem ControlDSR Data Set Ready TxE Transmitter EmptyRxC Receiver Clock Receiver BufferReceiver Control RxRDY Receiver ReadyProgramming Mode InstructionCommand Instruction Detailed Operation DescriptionData C~~RACTER Mode Instruction DefinitionAsynchronous Mode Transmission Asynchronous Mode ReceiveSynchronous Mode, Transmission Format Synchronous Mode TransmissionSynchronous Mode Receive Mode Instruction Format, Synchronous ModeStatus Read Format Command Instruction DefinitionCommand Instruction Format Status Read DefinitionSynchronous Interface to Telephone Lines Asynchronous Serial Interface to CRT Terminal, DC-9600 BaudAsynchronous Interface to Telephone Lines Synchronous Interface to Terminal or Peripheral DeviceCapacitance IccIOL Typ TA = oc to 70C VCC = 5.0V ±5% Vss = OV Symbol ParameterRXD~ RxDSRX ~4IlI ~AST BIT ,----1Peripherals Page High Speed 1 OUT of 8 Binary Decoder Enable Gate DecoderSystem 24K Memory Interface Using a very similar circuit to the I/O port decoder, an arPort Decoder Chip Select DecoderIll Logic Element Example\lJ JJ,.--+-I----.....18205 Characteristics TA = OOC to +75C, Vee = 5.0V ±5%Typical Characteristics Symbol VOL VOHTest Waveforms Switching Characteristics Conditions of Test Test LoadAddress or Enable to Output Delay VS. Load Capacitance Address or Enable to Output Delay VS. Ambient TemperaturePIN Configuration ~ R~ ~ Interrupts in Microcomputer Systems Polled MethodInterrupt Method Current Status Register Priority EncoderAO, A1, A2 Control SignalsINTE, elK ElR, ETlG, ENGlBasic Operation Level ControllerLevel Controller I ICascading Absolute Maximum Ratings Operating CharacteristicsSymbol Parameter Limits Unit Conditions Min Typ.£1 LosCharacteristics and Waveforms TA = oc to +70C, vcc = +5V ±5% Schottky Bipolar 8216 8226 +-......---- n csControl Gating OlEN, CS Bi-Directional DriverApplications of 8216/8226 Memory and 1/0 Interface to a Bi-directional BusLarge microcomputer systems it is often necessary to pro Input Leakage Current OlEN, CS VR =5.25V IcC Power Supply Current 120Input Load Current OlEN, CS VF =0.45 Input Load Current All Other Inputs VF =0.45OUT WaveformsPage 8253 8257 8259 Page It uses nMOS technology ~Jmodesof operation are Programmable Interval TimerSystem Interface Block DiagramPreliminary Functional Description System InterfaceProgrammable DMA Controller System Interface Dack 2System Application CS-------It LJJ Intel CPU GroupROMs RAMs Peripheral Coming Soon~~~1 735~It-j Lead CerDIP Dual IN-LINE Package D \.--.J.. ~~~l·34o~ Lead Plastic Dual IN-LINE Package PSales and Marketing Offices Distributors Page Page Page Page Page Page Instruction SET Summary of Processor Instructions By Alphabetical Order Instruction SETMicrocomputer System Users Registration Card Microcomputer Systems Bowers Avenue Santa Clara, CA Intel CorporationInter
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8080 specifications

The Intel 8085 and 8080 microprocessors were groundbreaking innovations in the world of computing, paving the way for future microprocessor development and personal computing.

The Intel 8080, introduced in 1974, was an 8-bit microprocessor that played a fundamental role in the early days of personal computing. With a 16-bit address bus, it had the capability to address 64 KB of memory. Running at clock speeds of 2 MHz, the 8080 was notable for its instruction set, which included 78 instructions and 246 opcodes. It supported a range of addressing modes including direct, indirect, and register addressing. The 8080 was compatible with a variety of peripherals and played a crucial role in the development of many early computers.

The microprocessor's architecture was based on a simple and efficient design, making it accessible for hobbyists and engineers alike. It included an 8-bit accumulator, which allowed for data manipulation and storage during processing. Additionally, the 8080 featured registers like the program counter and stack pointer, which facilitated program flow control and data management. Its ability to handle interrupts also made it suitable for multitasking applications.

The Intel 8085, introduced in 1976, was an enhancement of the 8080 microprocessor. It maintained a similar architecture but included several key improvements. Notably, the 8085 had a built-in clock oscillator, simplifying system design by eliminating the need for external clock circuitry. It also featured a 5-bit control signal for status line management, which allowed for more flexible interfacing with peripheral devices. The 8085 was capable of running at speeds of up to 3 MHz and had an extended instruction set with 74 instructions.

One of the standout features of the 8085 was its support for 5 extra instructions for stack manipulation and I/O operations, which optimized the programming process. Additionally, it supported serial communication, making it suitable for interfacing with external devices. Its 16-bit address bus retained the 64 KB memory addressing capability of its predecessor.

Both the 8080 and 8085 microprocessors laid the groundwork for more advanced microprocessors in the years that followed. They demonstrated the potential of integrated circuits in computing and influenced the design and architecture of subsequent Intel microprocessors. Their legacy endures in the way they revolutionized computing, making technology accessible to a broader audience, and their influence is still felt in the design and architecture of modern microprocessors today.