David P Harris wrote:

> Paul van der Linden wrote:
>
>> Hi,
>> I'm trying to design a board while waiting for the ethernet chip to 
>> become available.
>> The problem is the device are using SPI and I2C, how to connect this 
>> to a single PIC, and which PIC do you recommend (18F with enhance 
>> flash is preferable)?
>> The problem is, I can only solder normal PDIP packages, no SMD parts.
>>
>> The following things must be connected to the PIC:
>> - 1-8 x memory: 24FC512 (through I2C)
>> - 1 x digital potentiometer: MCP42010 (through SPI)
>> - 1 x ethernet: ENC28J60 (through SPI)
>> - and there must still be enough I/O lines to connected a LCD display 
>> (datasheet: http://www.lcdchina.com/PDF/GDM1602A-5.pdf)
>>
>> Paul
>>
> You will probably have to use bit-bashing for teh SPI, but it is 
> pretty easy.
> David
>
>
I just found this: http://www.i2cchip.com/mix_spi_i2c.html  all about 
mixing SPI and I2C on the same pins! 

David


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