Conntecting 2 PIC16F877

[glenjoy]

PSP maybe is using the PIC wiht external Memory having Port E as the RD/WR selector and chip enable .

Btw, use PIC16F628, eliminate the crystal, MCLR and Programming through RB.

 

[tgq]

Why do you suggest to use a PIC16F84?
This chip is obsolete and way too expensive

i know but we can always find resellers that have made high quantities stocks for 'special' use of 16F84 and now they sell them at lower price than 16F628 :wink:

Added after 6 minutes:

What is PSP bus? I have never heard this term before.

Parallel Slave Port
see 16F877 datasheet § 3.6

 

[samcheetah]

i know but we can always find resellers that have made high quantities stocks for 'special' use of 16F84 and now they sell them at lower price than 16F628 :wink:

well in that case its okay to buy 16F84's

but anyway the 16F628 is better than the 16F84 in many ways. have a look at the following page for more details

http://www.winpicprog.co.uk/pic_tutorial.htm

 

[tgq]

16F84 is enough to drive LCD from Tx logic level RS232

 

[DomDom]

can anyone give me the schematic how i can connect two pic16f877a together? i am doing autonomous robot..my pic need to communicate with sensor pic and motor driver

 

[BeeBop]

I really doubt you will find an 16F84 cheaper than the 16F628A. Besides that, the F84 does not have a serial port, so you would end up bit banging it, and have to pole it to receive. Not a very good idea.

 

[kfng]

direct, r u yc violet? yes u can conncet 2 PIC together. by using switching circuit consisting of transistors and resistors. those circuit r easy to construct if u know how BJT works. Vb , Vcc those stuff.

but it can only have one way communication. i am not sure abt 2 way communication because maybe it will pose massive dealy time.

 

[mus1gazafana]

i have a similar question.i have a system including one colour sensor(designed with pic16f877) and a LED panel board including 128 rgb leds and also including pic16f877. I want to show the sensed colour on the led panel board.I have my programs written in pic basic pro.And i want to connect two systems to each other.How can i do this? Can you send me sample codes please

 

[bigdogguru]

Two PICs can establish a communication channel quite effectively using I2C. This method uses the least ports, components and coding, while maintaining a high throughput. The following is an example of connecting two 16F88s:

Setting up and checking an I²C bus


By the way, they can also share other resources, including I2C components and the OSC.