PIN Connections, Operating Characteristics, Voo

SILICON GATE MOS 8702A

PIN CONNECTIONS

The external lead connections to the 8702A differ, depending on whether the device is being programmed (1) or used in read. mode. (See following table.)

		12	13	14	15	16	22	23
MODE	.	(Vee)	(Program)	(CS)·	(VBB )	(VGG )	(Vee)	(Vee)
Read		Vee	Vee	GND	Vee	VGG	Vee	Vee
Programming		GND	Program Pulse	GND	Vee	Pulsed VGG (V, L4P )	GND	GND

ABSOLUTE MAXIMUM RATINGS·

Ambient Temperature Under Bias	OOC to +70	0 C
Storage Temperature	-65°C to +125	0 C
Soldering Temperature of Leads (10 sec)	. . . . . . .. +300 oC
Power Dissipation	2 Watts
Read Operation: Input Voltages and Supply
Voltages with respect to Vee	+0.5V to -20V
Program Operation: Input Voltages and Supply
Voltages with respect to Vee	-48V

*COMMENT

Stresses above those listed under"Absolute Maximum Rat- ings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or at any other condition above those indicated in the operational sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for ex- tended periods may affect device rei iability.

READ OPERATION

D.C. AND OPERATING CHARACTERISTICS						(2)	.
		.	o			(2)	.
TA =aoc to 70 C, Vee =+5V±5%, Voo =-9V±5%, VGG =-9V±5%, unless otherwise noted.
SYMBOL			TEST	MIN.	TypJ3) MAX.		UNIT			CONDITIONS
	III		Address and Ch ip Select			10	fJA	V IN = O.OV
			Input Load Current
	IlO		Output Leakage Current			10				-
	IlO		Output Leakage Current			10	JJA	VOUT = O.OV, CS = Vee -2
	1		Power Supply Current		5	10	mA	VGG=Vee,CS=Vee-2
	000					10		VGG=Vee,CS=Vee-2
								10l = O.OmA, T A = 2Soc
	1		Power Supply Current		35	SO	mA	CS=V	cc	-2	""'"
	001								cc
								10l =O.OmA, TA = 2SoC
	1		Power Supply Current		32	46	mA	CS=O.O
	002
								10l =O.OmA, TA = 2SoC			> Continuous
	1		Power Supply Current		38.5	60	mA	CS=V		-2	> Continuous
	1		Power Supply Current		38.5	60	mA	CS=V		-2	Operation
	003							ec			Operation
								10l =O.OmA , T A = OOC
	leF1		Output Clamp Current		8	14	mA	VOUT = -l.QV, T A = OOC
	leF2		Output Clamp Current			13	mA	VOUT = -1.0V, TA = 2SoC			~
	IGG		Gate Supply Current			10	fJA
	V,l1		Input Low Voltage for	-1.0		0.65	V
			n L Interface
	V1L2		Input Low Voltage for	Voo		Vec-6	V
			MOS Interface
	V1H		Address and Chip Select	Vcc -2		Vee +0.3	V
			Input High Voltage
	IOl		Output Sink Current	1.6	4		mA	VOUT = 0.45V
	VOL		Output Low Voltage		-.7	0.45	V	IOl = 1.6mA
	V	OH	Output High Voltage	3.5			V	IOH = -2001lA
		OH
Note 1:		In the programming mode, the data inputs 1-8are pins 4-11 respectively. es = GN O.
Note 2:		VGG may be clocked to reduce power dissipation. In this mode average 100 increases in proportion to VGG duty cycle. (See p. 5)
Note 3:		Typical values are at nominal voltages and TA = 250 C.

5-38

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.

Intel 8080 manual PIN Connections, Operating Characteristics, Voo

Models: 8080

SILICON GATE MOS 8702A

PIN CONNECTIONS

ABSOLUTE MAXIMUM RATINGS·

*COMMENT

READ OPERATION

D.C. AND OPERATING CHARACTERISTICS

UNIT

CONDITIONS

V IN = O.OV

Voo

IOH = -2001lA

8080 specifications