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need help on MCP4921 DAC

 
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arawana



Joined: 06 Apr 2008
Posts: 19
Location: SINGAPORE

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need help on MCP4921 DAC
PostPosted: Mon Jan 18, 2010 10:40 pm     Reply with quote
Hi,

I want to use MCP4921 a 10bit DAC. I want to connect it to PIC16F877A.

But I have confuse on PIN CS on MCP4921.. Is it have to connect to pin RC0 or RC1 or RC2 or RE1?

Someone who had use MCP4921 please help me?

Thanks
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Mon Jan 18, 2010 11:08 pm     Reply with quote
CCS has a driver. Are you using it ?
Quote:
c:\program files\picc\drivers\mcp4921.c


The mcp4921.c driver file lists some default pins for the DAC signals.
You can change these pins to other pins if you want to.
Code:

#define DAC_CS     PIN_B0
#define DAC_CLK    PIN_B1
#define DAC_DI     PIN_B2
#define DAC_LDAC   PIN_B4
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