Microchip Pic
2010
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Microchip Pic
Single-wire serial LCD terminal
This is designed to use a serial terminal is 16 characters × 1 line LCD display
Module HD44780 basis. It is used to control display and PIC16F628A
With the host computer communication.
In the serial transmitter and receiver built into the informed consent to allow two-way communication
With any of the RS - 232 devices. This parameter has been set to 9600 baud, 8 bits,
No parity, one stop bit.
Circuit diagram below. 7805 a three-terminal regulator to step down
The supply is greater than any available down to about 8V, stability requires 5 volts
Display module. Display module itself is connected to a write-only device, the R / W type
Main Line direct connection to ground. Display Module B covers an area of six lines
In PIC, the other two lines dedicated to the serial interface. The implementation of the two transistors
The necessary level shifting between the inversion and the prior informed consent and RS - 232 level.
Port A is completely free of charge, for connecting a keyboard or similar input device available. Five lines
This port is available. If you do not need to reset the device pin can be configured as 4 acts
As input. Therefore, the four normal I / O lines, one of the open-drain output (RA4) and a progressive
And the only input device (RA5 / MCLR) is used for other purposes.
Informed consent within the plan is reproduced below. It has been assembled into a hex file using MPLAB
Free from Microchip.
Characters being received through the serial port in a round eight-deep buffer saved. The display is
When cleared, print linefeed or return character is received. This takes time, during this period
Up to three or four characters may be accepted.
Whenever a character is received, a flag is set. This gets reset by the buffer empty.
Circular buffer is implemented using two eight-mode is always up-counter.
These counters are incremented each time phase 7. This sets the zero order, so that the count
Always range from zero to seven, eight or die. Received a receipt for counter increments
Character and received the position at the counter of characters stored in the buffer.
When a new character display, display counter increments and the characters in the
Location in the buffer to be sent to the display. Then, the two counters are compared. If they are equal, all
Has received the character display, so the "new word can be" signs be reset.
Since the LCM interface uses a single chip HD44780 is 16 characters for each of two eight.
This requires daily control of the character display position tracking and the necessary control
The word appears in the correct position the ninth characters. Sixteen characters have been sent to the
Ignore any further conventional module printable characters.
About the Author
serial lcd module, buy LCD module
can atmega168 in arduino duemilanove be replace with pic microcontroller?
It is because I'm working with my electronic project.My lecturer want me to use microcontroller from PIC Microchip.
Thanks to any helpful answer.
Atmega168 can't be replaced with a PIC microcontroller. There is no PIC with equal pinout. But even that existed, what makes the Arduino easy to work with, is the Arduino IDE with the sketches, which you wouldn't be able to upload to the PIC since the Arduino bootloader runs on Atmega.
If you would like a easy way to work with PIC microcontrollers then I suggest the PICAXE (http://www.rev-ed.co.uk/picaxe/) or the Pinguino (http://www.hackinglab.org/).
Microchip pic 16c84 16f84 LED propeller clock
