Explore the Intel 8255A Programmable Peripheral Interface, its features, modes of operation, and programming techniques for effective microprocessor communication.

The Intel 8255A is a general purpose programmable I/O device designed for use with Intel microprocessors.

The Intel 8255 (or i8255) Programmable Peripheral Interface (PPI) chip was developed and manufactured by Intel in the first half of the 1970s for the Intel 8080 microprocessor. The 8255 provides 24 parallel input/output lines with a variety of programmable operating modes.

2024年7月18日 · PPI 8255 is a general purpose programmable I/O device designed to interface the CPU with its outside world such as ADC, DAC, keyboard etc. We can program it according to the given condition. It can be used with almost any microprocessor. It consists of three 8-bit bidirectional I/O ports i.e. PORT A, PORT B and PORT C.

Features of 8255A Programmable Peripheral Interface. 24 programmable I/O pins; Fully TTL compatible; High speed, no ‘Wait State’ operation with 5 MHz 8085, 8 MHz 80C86 and 80C88; Direct bit set/reset capability; Enhanced control word read …

2011年4月11日 · The 8255A is a programmable peripheral interface (PPI) device designed for use in Intel microcomputer systems. Its function is that of a general purposes I/O component to Interface peripheral equipment to the microcomputer system bush.

2020年5月1日 · 8255A可编程外围设备接口 （programmable perphheral interface，PPI）是一种通用的可编程并行I/O接口器件。 它可以作为Intel系列微处理器或其它系列微处理器的接口器件，可以将任何与TTL兼容的I/O设备与微处理器连接。 在与主频不高于8MHz的微处理器一起工作时，不需要插入等待周期。 它有24个可编程I/O引脚，分为两组，每组12个，可以以3种不同的 …

The 8255A is a general purpose programmable I/O device designed for use'with 8080A and 8085A microprocessors. It has 24 I/O pins which 'may be individually programmed in two groups of twelve and used in three major modes of operation. In the first mode, each group of twelve I/O pins may be programmed in sets of 4 and 8 to be input or output.

The 8255A is a general-purpose, programmable I/O device designed for use with IAPX Family microprocessors. It has 24 I/O pins which may be individually programmed two groups of twelve, and used in three major modes of operation.

1991年8月1日 · Intel's 8255A is a programable peripheral interface. in the drivers and interfaces, specialized interfaces category. Check part details, parametric & specs updated 20-NOV-2024and download pdf datasheet from datasheets.com, a global distributor of electronics components.