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06/08/01 13:14
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#12303 - RE: I2C interface for 24C16 + DS1307
Manus wrote:

However I have a time of 20ms! between each byte is read. That is, wait 20ms, send Chip-address+Hi-address, send Lo-address, read/write one byte, RET. My internal wait loop is 5us, but I have tried to increse it to 10 but that doesn't help...

Hi Magnus,

The time between each BYTEREAD is not THAT important, the I2C clocktiming (for each bit) is. As the datasheet speaks about 100kHz, you may not exceed this clockfrequency. In case of doubt, add some NOP's in your I2C routines to "stretch" the clock to see if this helps.

Henk

List of 17 messages in thread
TopicAuthorDate
I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
serching ADuC824 applications            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: I2C interface for 24C16 + DS1307            01/01/70 00:00      
RE: serching ADuC824 applications            01/01/70 00:00      
RE: serching ADuC824 applications            01/01/70 00:00      

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