INTEL 8255 DATASHEET PDF

INTEL 8255 DATASHEET PDF

DATASHEET. The Intersil 82C55A is a high performance CMOS version of the industry standard A and is manufactured using a. The Intel (or i) Programmable Peripheral Interface (PPI) chip was developed and .. , Complete Description about the Intel IC; , Datasheet; , functions overview; The Intel (or i) Programmable Peripheral Interface (PPI) chip .. “PCI A Datasheet” (). 6.

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Intel 8255

This page was last edited on 23 Septemberat Acknowledgement and handshaking signals are provided to maintain proper data flow and synchronisation between the data transmitter and receiver. The control signal chip select CS pin 6 is used to enable the chip. In this mode, the may be used to extend the system bus to a slave microprocessor or to transfer data bytes to and from a floppy disk controller. The ‘s outputs are latched to hold the last data written to them.

Since the two halves of port C are independent, they may be used such that one-half is initialized as an dahasheet port while the other half is initialized as an output port. Some of the pins of port C function as handshake lines. In this mode, the may be used to extend the system bus to a slave microprocessor or to transfer data bytes to and from a floppy disk controller.

As an example, consider an input device connected to at port A.

By using this site, you agree to the Terms of Use and Privacy Policy. Interrupt logic is supported. If from the previous operation, port A is initialized as an output port and if is not reset before using the current configuration, then there is a possibility of damage of either the input device connected or or both, since both and the device connected will be sending out data.

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Retrieved 26 July All of these chips were originally available in a pin Datasheft package. For port B in this mode irrespective of whether is acting as an input port or output portPC0, PC1 and PC2 pins 825 as handshake lines.

The inputs are not ratasheet because the CPU only has to read their current values, then store the data in a CPU register or memory if it needs to be referenced at a later time. Retrieved 3 June Interrupt logic is supported. The Intel or i Programmable Peripheral Interface PPI chip was developed and manufactured by Intel in the first half of the s for the Intel microprocessor.

A Datasheet(PDF) – Intel Corporation

This means that data can be input or output on the same eight lines PA0 – PA7. If from the previous operation, port A is initialized as an output port and if is not reset datasehet using the current configuration, then there is a possibility of damage of either the input device connected or or both, since both and the device connected will be sending out data.

For example, if port B and datawheet port C have to be initialized as input ports and lower port C and port A as output ports all in mode Retrieved 3 June It is an active-low signal, i.

The functionality of the is now mostly embedded in larger VLSI processing chips as a sub-function. This mode is selected when D 7 bit of the Control Word Register is 1.

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A Datasheet pdf – PROGRAMMABLE PERIPHERAL INTERFACE – Intel

The Intel or i programmable peripheral interface PPI chip was developed and manufactured by Intdl in the first half of the s for the Intel microprocessor and is a member of the MCS Family of chips.

Retrieved from ” https: For port B in this mode irrespective of whether is acting as an input port or output portPC0, PC1 and PC2 pins function as handshake lines. The two modes are selected on the basis of the value present at the D 7 bit of the control word register. Only port A can be initialized in this mode.

The i was also used with the Intel and Intel [1] and their descendants and found wide applicability in digital processing systems. If an input changes while the port is being read then the result may be indeterminate. Since the two halves of port C are independent, they may be used such that one-half is initialized as an input port while the other half is initialized as an output port.

From Wikipedia, the free encyclopedia. Some of the pins of port C function as handshake lines. Input and Output data are latched. Dqtasheet an example, consider an input device connected to at port A.