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The Intel 8085 (" eighty-eighty-five ") is an 8-bit microprocessor produced by Intel and introduced in March 1976. [2] It is the last 8-bit microprocessor developed by Intel. It is software- binary compatible with the more-famous Intel 8080 with only two minor instructions added to support its added interrupt and serial input/output features.
- 2000
- March 1976
- 8.1K
- 3, 5 and 6 MHz
About Intel Corporation. Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California. It is one of the world's largest and highest valued semiconductor chip makers, based on revenue. Intel is best known for its development of microprocessors, the central processing units (CPUs) of ...
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The 8085A is a complete 8-bit parallel central processor. It is designed with N-channel depletion loads and requires a single +5 volt supply. Its basic clock speed is 3Mhz (8085A) or 5MHZ (8085A-2), thus improving on the present 8080A's performance with hight system speed. Also it is designed to fit into a minimum system of three IC's: The cpu ...
m 8085A 20% Lower for 3 Power MHz and Consumption 5 MHz than Compatible Non-Maskable) interrupt Plus an 8080A- m 1.3 1s Instruction Cycle (8085AH); 0.8 @ Serial In/Serial Out Port wS (8085AH-2); 0.67 1s (8085AH-1) = Decimal, Binary and Double Precision w 100% Software Compatible with 8080A Arithmetic
- Arithmetic and Logic Unit (ALU) : It is used to perform mathematical operations like: addition, multiplication, subtraction, division, decrement, increment, etc.
- Flag Register : It is an 8-bit register that stores either 0 or 1 depending upon which value is stored in the accumulator.
- Accumulator : Accumulator is used to perform I/O, arithmetic and logical operations. It is connected to ALU and internal data bus.
- General Purpose Registers : There are 6 general purpose registers. These registers can hold 8 bit values. These 8-bit registers are B,C,D,E,H,L. These registers work as 16-bit registers when they work in pair like: B-C, D-E, H-L.
Intel 8085 is an 8-bit, NMOS microprocessor. It is a 40 pin C package fabricated on a single LSI chip. The Intel 8085A uses a single +5V D.C supply for its operation. Its clock speed is about 3 MHz. The clock cycle is of 320 ns. The time for the back cycle of the Intel 8085 A-2 is 200 ns. It has 80 basic instructions and 246 opcodes.
Mar 24, 2023 · The original version of the 8085 microprocessor without suffix "A" was manufactured by Intel only, and was very quickly replaced with 8085A containing bug fixes. A few years after that, around 1980, Intel introduced 8085AH - HMOS version of 8085A. There was also 80C85A - CMOS version of the 8085A.
