pic microcontrollers
DESCRIPTION
PIC microcontrollers. PIC microcontrollers come in a wide range of packages from small chips with only 8 pins and 512 words of memory all the way up to very powerful devices that have 32 Kilo words of memory and 84 pins to connect to electronic circuits. - PowerPoint PPT PresentationTRANSCRIPT
PIC microcontrollers
Electronics and Computer Systems Engineering
PIC microcontrollers come in a wide range of packages from small chips with only 8 pins and 512 words of memory all the way up to very powerful devices that have 32 Kilo words of memory and 84 pins to connect to electronic circuits.
Electronics and Computer Systems Engineering
8 and 16 bit EEPROM/EPROM/ROM CMOS Microcontroller
Applications in personal care, security systems, remote transmitter/receivers
Programmable input/output terminations
Electronics and Computer Systems Engineering
This block diagram shows a PIC microcontroller application in a vacuum cleaner
http://www.microchip.com
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Microchip’s Infrared products enable the embedded system designer to easily add infrared wireless connectivity
http://www.microchip.com
Electronics and Computer Systems Engineering
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Internal view of a microcontroller
Electronics and Computer Systems Engineering
PIC development boards are used to program and run simple programs
Serial PC interface to program IC
Some small PICs though powerful have only 35 instructions that control its operation.
Electronics and Computer Systems Engineering
PROGRAM DEVELOPMENT TOOLS Icon Assembler (CoreChart) Simple Flowchart
Electronics and Computer Systems Engineering
Pin Description for PIC12C508AGP0 Bi-directional I/O port/ serial programming data mode.
GP1 Bi-directional I/O port/ serial programming clock.
GP2/T0CKI I/O Bi-directional I/O port. Can be configured as T0CKI.
GP3/MCLR/VPP Input port/master clear (reset) input/programming voltage input.
GP4/OSC2 I/O Bi-directional I/O port/oscillator crystal output.
GP5/OSC1/CLKIN Bidirectional IO port/oscillator crystal input/external clock source
input
VDD— Positive supply for logic and I/O pins
VSS— Ground reference for logic and I/O pins
Electronics and Computer Systems Engineering
THE PICAXE MICRO CONTROLLER
The PICAXE is a low-cost ‘FLASH’ memory based microcontroller.
These microcontrollers can be programmed over and over again (typically 100 000 times).
The PICAXE uses a simple BASIC language (or graphical flowcharts).
Electronics and Computer Systems Engineering
It is much easier to learn and debug than industrial programming languages.
PICAXE programming is at the ‘chip’ level.
The microcontroller is programmed via a 3-wire connection to the computers serial port.
THE PICAXE MICRO CONTROLLER
Electronics and Computer Systems Engineering
Has an internal A to D converter enabling analogue inputs with digital outputs.
THE PICAXE MICRO CONTROLLER
Electronics and Computer Systems Engineering