INTEL 8255A PDF

How to design your resume? It stands for Read option. Select a valid country. Seller information eclectrons Delivery times may vary, especially during peak periods. Add to watch list Remove from watch list.

Author:Gunos Faekree
Country:Malta
Language:English (Spanish)
Genre:Politics
Published (Last):14 December 2016
Pages:167
PDF File Size:10.16 Mb
ePub File Size:19.60 Mb
ISBN:866-7-76414-790-5
Downloads:80784
Price:Free* [*Free Regsitration Required]
Uploader:Vugami



In MODE 1, each group may be programmed to have 8 lines of input or output. MODE 2 is a strobed bi-directional bus configuration.

The is a 40 pin integrated circuit IC , designed to perform a variety of interface functions in a computer environment.

All information read from and written to the occurs via these 8 data lines. All peripheral ports are set to the input mode. They can be connected to peripheral devices. There are several different operating modes for the and these modes must be defined by the CPU writing programming or control words to the device The line group of port C consists of two 4 bit ports.

One of the 4 bit group is associated with group A control and the other 4 bit group with group B control device signals. The upper 4 bits of port C are associated with group A control while the lower 4 bits are associated with group B control.

These blocks provide the electrical interface between the Z80 and the The internal path being enabled depends on the type of operation performed by the Z If bit 7 of the control word is a logical 1 then the will be configured.

2002 YZ426 MANUAL PDF

8255A - Programmable Peripheral Interface

In MODE 1, each group may be programmed to have 8 lines of input or output. MODE 2 is a strobed bi-directional bus configuration. The is a 40 pin integrated circuit IC , designed to perform a variety of interface functions in a computer environment. All information read from and written to the occurs via these 8 data lines. All peripheral ports are set to the input mode.

CATASTROFA DE LIVIU REBREANU PDF

Intel 8255A – Описание контактов

Mode selection bits, D2, D5, D6 are all 0 for mode 0 operation. The two halves of port C can be either used together as an additional 8-bit port, or they can be used as individual 4-bit ports. 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. Input ports are buffered, not latched. Ports do not have handshake or interrupt capability. This is required because the data only stays on the bus for one cycle. So, without latching, the outputs would become invalid as soon as the write cycle finishes.

IEC 60695-4 PDF

Intel 8255

.

GREITAS SKAITYMAS PDF

INTEL 8255A PDF

.

Related Articles