Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Help needed in interfacing sd card to pic16F877

Status
Not open for further replies.

vinash

Member level 2
Joined
Nov 3, 2005
Messages
45
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
1,999
pic16f877 sd card

Hi,
I am trying to interface a SD card to PIC16F877 microcontroller. The purpose is
to develop a datalogger.( There would be a sensor that would be interface to the PIC and the sensor readings would be recorded onto the SD card). The readings stored would than be read through a PC. I have gone through the following website

https://www.cc5x.de/MMC/

and try to follow the schmetic there.
I have included a SRAM to act as a buffer as the SD card can only send data in 512 Bytes abd the PIC microcontroller does not have enough space. I am very new to this field and i am attaching my Schmetic. It would be great if someone were to give me some comments about my hardware design.Thank you so much.
 

mgf

Member level 1
Joined
Feb 26, 2004
Messages
37
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Location
zambia
Activity points
322
sd card pic16f

Hello,

with the money spent on SRAM, you better upgrade to say 18F458 and use a 512 bytes buffer in the PIC Reserved_Ram Space - using indirect access (FSR2/POSTINC2). Will work ok.

regards,
mgf
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top