Can't get ACK in CY8C3108

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setec_869301
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First reply posted First question asked Welcome!

I checked HW is ok, Vcc is stable and outputs 18.8V, Vdd is 3.3V, I2C speed is lower than 100kHz, all timings are checked and OK, no line crossing. Pin 12 CS2/GUARD that also works as AXRES is +3.3V. Still after 0x2FFF trials, no ACK. Any idea?

Schematic is attached.

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setec_869301
Level 1
Level 1
First reply posted First question asked Welcome!

Hi: I found the problem. The I2C address is 0x37 and I assumed 0x55 although it was decimal 55 (0x37).

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setec_869301
Level 1
Level 1
First reply posted First question asked Welcome!

Hi: I found the problem. The I2C address is 0x37 and I assumed 0x55 although it was decimal 55 (0x37).

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