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The CLK signal in the 8085 is the system clock, which is the External Input Frequency or Crystal divided by two. It can be used to develop bus control logic, because it is essentially the inverse of ALE for one half clock cycle.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoThis signal can be used as the system clock for other devices.
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What is the function of ready pin of 8085 microprocessor?
The READY pin on the 8085 microprocessor is used to delay the completion of a bus transfer cycle. It is sampled by the 8085 at the falling edge of clock following ALE. If it is high, the cycle completes. If it is low, the cycle is extended by one clock, with all lines held steady - then it is sampled again at each of the next falling edges of clock until it is high. The purpose of READY is to allow (usually) memory devices to operate at a slower speed than the 8085.
What is PMW in 8085 microprocessor?
I know of no PMW pin or PMW instruction in the 8085. Please restate the question. If you are asking about PWM, or pulse width modulation, please note that that is not an 8085 specific thing. It would be a function of system design, and you could achieve PWM with programming, but the answer would depend on the particulars of that system design.
What is the function of READY pin of 8085?
The READY pin on the 8085 microprocessor is used to delay the completion of a bus transfer cycle. It is sampled by the 8085 at the falling edge of clock following ALE. If it is high, the cycle completes. If it is low, the cycle is extended by one clock, with all lines held steady - then it is sampled again at each of the next falling edges of clock until it is high. The purpose of READY is to allow (usually) memory devices to operate at a slower speed than the 8085.
What is microprocesser 8085?
microprocessor 8085 is basic 8 bit microprocessor by Intel Corp. it has 64Kb memory and 16 address buses and 8 data buses it has 40 pin ic. 8 address and 8 data buses are multiplexed with each other for reducing the total number of pins from the microprocessor 8085 . it require 5MHz clock frequency for operation. only a crystal which connected easily across two pins of microprocessor can provide this clock.
How can you trap mask in 8085 microprocessor?
The TRAP instruction in the 8085 is NONMASKABLE, which means it cannot be masked, i.e. it cannot be disabled. The only way to mask or disable TRAP is with external hardware, such as an I/O pin and an AND gate.
What is pin configuration of microprocessor 8088?
the pin configuration of a processor means that the diagramatic representation of block diagram of processor representing various pins and the function of that pins
What is vss in 8085 pin digram?
Vss, also known as Gnd, is pin 20 on the 8085.
What is function of hold pin in 8085 microprocessor?
The HOLD pin on the 8085 is an external request for control of the bus. Upon receipt of HOLD, the 8085 will complete its current cycle and assert HLDA (HOLD Acknowledge), and then it will float the address, data, and control bus one half clock cycle later. The external hardware is then free to use the bus. When it is done, it releases HOLD, the 8085 releases HLDA, and the 8085 takes control of the bus and continues with the next cycle. HOLD is used by external DMA controllers, such as the 8257, to transfer data to and from memory on behalf of high speed peripherals, without requiring 8085 attention to that data transfer.
Why 8085 is a 40 pin ic?
The 8085 is a 40 pin ic because Intel designed it that way.
What is rim in microprocessor 8085?
RIM is Read Interrupt Mask. It is used to access the interrupt mask register, which contains the status of the three interrupt masks and the serial input data pin.
What was the reason behind limit of maximum pin in microprocessor 8085?
There is no maximum pin in the 8085. In the 8086/8088, however, there is a min/max pin, called MN/MX-, that is used to configure whether certain bus control signals are provided by the 8086/8088, or by the 8288 bus controller. In the latter case, this frees up several pins for other, more sophisticated, i.e. maximum mode, uses.
What is the function of interrupt acknowledge pin in 8085 micro processor?
The INTA- (Interrupt Acknowledge) pin on the 8085 is an acknowledge of the INTR (Interrupt Request). It has the same timing as RD-, and external hardware is expected to provide an opcode, usually a CALL or an RST instruction, in response to INTA-.
