PIC16f877 Interfacing with EEPROM 24c256 using SPI or I2C.

[aamir_javed]

pic16f877 spi

I want to interface PIC16f877 with EEPROM 24c256 using SPI or I2C interface. Can any body give me details of interfacing and circuit diagrams????

 

[blueroomelectronics]

spi pic16f877

Have you tried Google?

 

[aamir_javed]

pic16f877 external eeprom

yes but Found nothing useful...

Added after 12 minutes:

Please somebody help????????????

 

[Medtronic]

pic16f877 interfacing

Hi
what about PROTON can it help you
if it i'll help

Regards

 

[aamir_javed]

24c256 sample circuit

I need code in assembly..

but if u can give me circuit diagram and useful tips, i will appreciate it

 

[master_picengineer]

spi in pic16f877a microcontroller

If you know French, use the Fabulous free book of Bigonoff. You ll find even the source.

 

[kepi19]

pic16f877a spi

Hi,

Here are some inforation from Micochip website

https://ww1.microchip.com/downloads/en/AppNotes/00976A.pdf

Here is the assembler code example

https://ww1.microchip.com/downloads/en/AppNotes/AN976.zip

And here is more information from Microchip website about i2c

https://ww1.microchip.com/downloads/en/DeviceDoc/i2c.pdf

I hope that it helps you.

Regards.

 

[funnynypd]

proton 24c256

read all the errata first before you choose the chip.

 

[supiper]

interfacing eeprom using pic16f877a

I2C is a more versatile system level serial data transfer method. It only needs two bus connected signals; clock (SCL) and data (SDA) lines .
These allow a master controller to be connected to up to 1023 other devices. These can include other MCUs, memory devices, analogue converters and so on. The example used here is access to an external EEPROM memory, which would be used to expand the non-volatile data storage in an MCU system, and is used in a general purpose PIC base module. The memory used here is a Microchip 24AA128, which stores 16 kb of data (128k bits);
The test program, attached below, reads and writes every location (16384 addresses) by this method. The maximum write cycle time specified is 5 ms (16384  0.005 
82 s). It therefore takes a considerable time to complete this test. If the memory
is being accessed sequentially, as is frequently the case, the overall access time
can be reduced by using the page read and address auto-increment features of
the chip, which are explained in the EEPROM data sheet.

 

[kepi19]

i2c using pic16f877

I see that you have made progress in solving your problem, I am very happy for you.

Best regards.