I am looking for some technical specs on you SFR02. The issue I have is that the SCL and SDA lines for the I2C are pulled-up to 3.3 V.
The SFR02 is supplied in 5V. At the moment, the I2C comm is not working, the device address is acknowledge but not the reg address. I tried to read or write without effect. Is it possible to have the electrical characteristics for the SFR02 module?
Thanks in advance,
gregory.cris wrote:Thanks for the quick reply. I had a quick look on the PIC16F687 spec sheet. I am thinking to drop down the supply voltage for the SFR02 to 3.3v.
On page 233 of the datasheet (http://ww1.microchip.com/downloads/en/D ... 41262E.pdf), its says that this should be working if Fosc is less than 20MHz.
Can I assume this to be OK?
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