/6 Multifunction Device (memory+IO) 2 programmable 8 bit I/O ports; 1 programmable 6 bit I/O port; 1 programmable 14 bit binary counter/timer; Internal . Electronic Devices and circuits – Millman and Halkias – McGraw Hill Publications . 2. Solid State Electronic – Multipurpose Programmable Device. Programmable Peripheral Interface Devices Support chips: , , Devices A multipurpose programmableinterface Designed to be.
|Published (Last):||15 December 2005|
|PDF File Size:||1.39 Mb|
|ePub File Size:||12.11 Mb|
|Price:||Free* [*Free Regsitration Required]|
It is a programmable device. These are 8-bit bi-directional buses, connected to data bus for transferring data. Auth with social network: It can be programmed by mode 0 and mode 1. Port A is working as 8-bit bidirectional. IO Interfaces and Bus Standards.
My presentations Profile Feedback Log out. This is Active Low signal, when it is Low Write operation will be start. We think you have liked this presentation. To make this website work, we log user data and share it with processors. That means clear control registers. Address signals are A0,A1,and CS. Share buttons are a little bit lower. This is Active Low signal, when it is Low read operation will be start. This is a 8-bit Unlatched buffer Dveice and an Output latch.
Both the inputs and outputs are latched. In this modetwo 8 bit ports port A and port B and two 4 bit ports port C upper and port C lower are available. This is Active Low signal.
PROGRAMMABLE PERIPHERAL INTERFACE ppt download
Published by Jaidyn Tea Modified over 3 years ago. It is splitted into two parts.
When it is low, then data is transfer from Any port can be used as an input or output port. This mode allows bidirectional data transfer over a single 8-bit data bus port A using handshake signals. T T L compatible. On one side we have data bus. If you wish to download it, please recommend it to your friends in any social system. These lines are divided into two groups.
This is used to reset the device. A BSR word is written for each bit Example: The internal data bus and Outer pins D0-D7 pins are connected in internally. It is a 8-bit bidirectional Data bus. Improved dc driving capability.
PROGRAMMABLE PERIPHERAL INTERFACE -8255
Ports do not have Handshake or interrupt capability. Outputs are latchedInputs are buffered not latched. Registration Forgot your password?
Used to interface between data bus with system bus.