8080Al8080A·1/8080A·2

ABSOLUTE MAXIMUM RATINGS·

Temperature Under Bias

O°C to +70° C

Storage Temperatu re

-65°C to + 150°C

All Input or Output Voltages

 

With Respect to Vss

-0.3V to +20V

VCC. Voo and Vss With Respect to Vss

-0.3V to +20V

Power Dissipation

....... 1.5W

D.C. CHARACTERISTICS (TA = O°C to 70o e, Voo =

Vee = +5V ±5%, Vee =

"NOTICE: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional opera- tion of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maxi- mum rating conditions for extended periods may affect device reliability.

+12V ±5%,

-5V ±5%, Vss =OV; unless otherwise noted)

Symbol

Parameter

Min.

Typ.

Max.

Unit

Test Condition

 

 

 

 

 

 

 

 

VILC

Clock Input Low Voltage

VSS-1

 

Vss+O.S

V

 

VIHC

Clock Input High Voltage

9.0

 

 

Voo+1

V

 

 

 

 

 

 

 

 

 

VIL

Input Low Voltage

Vss-1

 

Vss+O.S

V

 

VIH

Input High Voltage

3.3

 

 

Vcc+1

V

 

 

 

 

 

 

 

 

 

VOL

Output Low Voltage

 

 

 

0.45

V

} 10L • 1.9mA on all ou'puts.

 

 

 

VOH

Output High Voltage

3.7

 

 

 

V

IOH = -150I1A.

 

 

 

 

 

 

 

 

 

 

 

 

100 (AV)

Avg. Power Supply Current (Voo )

 

 

40

70

mA

} Op.,,';oo

ICC (AV)

Avg. Power Supply Current (Vce)

 

 

60

SO

mA

 

 

TCy = .48 psec

 

 

 

 

 

 

 

Iss (AV)

Avg. Power Supply Current (Vss )

 

 

.01

1

mA

 

 

 

 

IlL

Input Leakage

 

 

 

±10

pA

Vss < VIN < VCC

 

 

 

 

 

 

 

 

ICL

Clock Leakage

 

 

 

±10

pA

Vss < VCLOCK < VOO

IOL [2)

Data Bus Leakage in Input Mode

 

 

 

-100

pA

VSS<VIN<VSS+O.SV

 

 

 

 

 

-2.0

mA

VSS +O.SV<VIN <VCC

 

 

 

 

 

 

 

 

 

 

 

f

 

 

 

IFL

Address and Data Bus Leakage

 

 

 

+10

pA

VAOOR/OATA = Vec

During HOLD

 

 

 

-100

VAOOR/OATA = VSS + 0.45V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAPACITANCE (TA = 25°C, Vee = Voo =Vss = ov, Vee = -5V)

Symbol

Parameter

Typ.

Max.

Unit

Test Condition

 

 

 

 

 

 

C<I>

Clock Capacitance

17

25

pf

fc = 1 MHz

CIN

Input Capacitance

6

10

pf

Unmeasured Pins

 

 

 

 

 

 

COUT

Output Capacitance

10

20

pf

Returned to Vss

 

 

 

 

 

 

NOTES:

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

2.~I supply / ~TA = -0.45%fc.

1.5

1.0---- ----r----

0.5

0+25+50+75

AMBIENT TEMPERATURE (OC)

Typical Supply Currentvs. Temperature, Normalizedl3J

6-3

AFN·OO735C

Page 111 Page 113
Page 112
Image 112
Intel MCS-80/85 manual Absolute Maximum RATINGS·
Page 111 Page 113

MCS-80/85 specifications

The Intel MCS-80/85 family, introduced in the late 1970s, is a seminal collection of microprocessors that played a pivotal role in the early days of computing. The MCS-80 series, initially targeting embedded systems and control applications, gained remarkable attention due to its innovative architecture and flexible programming capabilities.

The MCS-80 family is anchored by the 8080 microprocessor, which was one of the first fully integrated 8-bit microprocessors. Released in 1974, the 8080 operated at clock speeds ranging from 2 MHz to 3 MHz and featured a 16-bit address bus capable of addressing up to 64KB of memory. The processor’s instruction set included around 78 instructions, providing extensive capabilities for data manipulation, logic operations, and branching.

Complementing the 8080 was a suite of support chips, forming the MCS-80 platform. The most notable among them was the 8155, which integrated a static RAM, I/O ports, and a timer, tailored for ease of designing systems around the 8080. Other support chips included the 8085, which provided improvements with an integrated clock generator, making it compatible with more modern designs and applications.

The MCS-85 series, on the other hand, revolves around the 8085 microprocessor, which provided a more advanced architecture. The 8085 operated at clock speeds of up to 6 MHz and came with a 16-bit address bus, similar to its predecessor. However, it introduced more sophisticated features, including an enhanced instruction set and support for interrupt-driven programming. These enhancements made the 8085 especially appealing to developers working in real-time processing environments.

The MCS-80/85 family utilized NMOS technology, known for its lower power consumption and higher performance compared to previous technologies like TTL. The family’s architecture allowed for easy interfacing with a variety of peripherals, making it a favorite for educational institutions and hobbyists embarking on computer engineering projects.

With its robustness, versatility, and affordability, the Intel MCS-80/85 microprocessors laid the groundwork for many subsequent microcomputer systems and applications. The legacy of this powerful family continues to influence modern microprocessor design, emphasizing the importance of reliable architecture in a rapidly evolving technology landscape.
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