Sunnyback
Newbie level 2
Hi,
:thumbsup:
I'm using a TLV493D with a power separated by FET from microcontroller power, like Slave #1 in figure 14 of I2C interface note.
Sometimes my few TLVs return NCK and cannot recover even turn on/off by IO_0 pin.
A difference between the note and my project is SCL pin is high during 200us of after power on by getting IO_0 high.
Does this SCL behavior seriously affect the I2C address setting/communication?
I'm feeling strange since many of my TLVs are successfully work but this happens with few chips beside low frequency.
Here is the schematics:
The timing of I2C bus:
Also, I tried getting SCL low during the configuration phase, however, some chips still return NCK sometimes.
:thumbsup:
I'm using a TLV493D with a power separated by FET from microcontroller power, like Slave #1 in figure 14 of I2C interface note.
Sometimes my few TLVs return NCK and cannot recover even turn on/off by IO_0 pin.
A difference between the note and my project is SCL pin is high during 200us of after power on by getting IO_0 high.
Does this SCL behavior seriously affect the I2C address setting/communication?
I'm feeling strange since many of my TLVs are successfully work but this happens with few chips beside low frequency.
Here is the schematics:
The timing of I2C bus:
Also, I tried getting SCL low during the configuration phase, however, some chips still return NCK sometimes.