SILICON GATE MOS 8080A-1

ABSOLUTE MAXIMUM RATINGS·

Temperature Under Bias

 

O°C to +70° C

Storage Temperature

 

-65°C to +150°C

All Input or Output Voltages

 

 

With Respect to Vaa

 

-0.3V to +20V

Vee, VOO and Vss With Respect to Vaa

-0.3V to +20V

Power Dissipation

. . . . . . . . . . . .. 1.5W

*COMMENT: Stresses above those listed under 'Absolute Maxi- mum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the de- vice at these or any other conditions above those indicated in the operational sections of this specification is'not implied. Ex- posure to absolute maximum rating conditions for extended periods may affect device reliability.

D.C. CHARACTERISTICS

TA = O°C to 70°C, Voo = +12V ± 5%, Vce = +5V ± 5%, Vss = -5V ± 5%, Vss = OV, Unless Otherwise Noted.

Symbol

Parameter

Min.

Typ.

Max.

Unit

Test Condition

VILe

Clock Input Low Voltage

Vss-1

 

Vss+0.8

V

 

VIHC

Clock Input High Voltage

9.0

 

Voo+1

V

 

VIL

Input Low Voltage

Vss-1

 

Vss+0.8

V

 

VIH

Input High Voltage

3.3

 

Vec+1

V

}'0L = 1.9mA on all outputs,

VOL

Output Low Voltage

 

 

0.45

V

VO H

Output High Voltage

3.7

 

 

V

'OH= 150J,.lA.

 

 

 

100 (AV)

Avg. Power Supply Current (Voo)

 

40

70

mA

} Operation

ICC (AV)

Avg. Power Supply Current (Vce)

 

60

80

mA

 

TCy = .32Jlsec

 

Avg. Power Supply Current (Vss )

 

.01

1

mA

'ss(AV)

 

 

IlL

Input Leakage

 

 

±10

pA

Vss ~ VIN ~ Vee

ICl

Clock Leakage

 

 

±10

pA

Vss ~ VeLOeK ~ Voo

IOL[2]

Data Bus Leakage in Input Mode

 

 

-100

JlA

VSS~VIN~Vss+0.8V

 

 

 

 

-2.0

mA

Vss+0.8V~VIN~Vec

 

 

 

 

 

 

Address and Data Bus Leakage

IFL

During HOLD

CAPACITANCE

TA = 25°C Vee = VOO = Vss = OV, Vas =-5V

Symbol

Parameter

Typ.

Max.

Unit

Cf/>

Clock Capacitance

17

25

pf

CIN

Input Capacitance

6

10

pf

CO UT

Output Capacitance

10

20

pf

NOTES:

1.The RESET signal must be active for a minimum of 3 clock cycles.

2.When OSIN is high and VIN > VIH an internal active pull up will be switched onto the Data Sus.

3.aI supply I b. T A = -0.45%/c.

+10

pA

VAOOR/OATA = Vec

 

 

-100

VAOOR/OATA = VSS + 0.45V

 

 

 

 

 

 

 

 

 

TYPICAL SUPPLY CURRENT VS.

 

 

 

 

TEMPERATURE, NORMALIZED.[3]

 

 

1.5 r------r-----~---_

Test Condition

~

 

 

 

 

 

z

 

 

 

 

 

w

 

 

 

 

fc = 1 MHz

a:

 

 

 

 

a:

 

 

 

 

 

::>

 

 

 

 

Unmeasured Pins

(J 1.0 1"-----=-~:------+-------4

>

 

 

 

 

 

-'

 

 

 

 

 

Q.

 

 

 

 

 

Q.

 

 

 

 

Returned to VSS

::>

 

 

 

 

en

 

 

 

 

 

 

0.5 ----"'-----....L..-

....J

 

 

o

+25

+50

+75

AMBIENT TEMPERATURE (OC)

DATA BUS CHARACTERISTIC

DURING DBIN

MAX

°o'-------------~­

Vee

5-21

Page 82 Page 84
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Image 83
Intel 8080 manual Max, Symbol Parameter Typ, Unit
Page 82 Page 84

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.
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