Dear Specialists,
My customer is evaluating TCA9535 and encountering the problem.
I would be grateful if you could advise.
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Regarding TCA9535DB,we'd like to know the command to output H
I have performed the following operations and checks, but H is not output.
①40h, 02h, FFh, FFh
Each port voltage (4pin P0, etc.) 0V
②40h, 02h, 00h, 00h
Each port voltage (4pin P0, etc.) 0V
Whichever command I ran, the output of each port is 0V, not 5V.
Is the send command wrong?
TCA9535DB power supply 5.0V, INT terminal 4.7k pull-up
Address port A2 = A1 = A0 = 0V
Each port is pull-down, but I checked it even in the open state
I2C communication speed is 100kHz, pull-up resistance is 2.2k and 4.7k
I am checking the command transmission on the I2C monitor.
Also, about reading
It can be read correctly at 46h and 00h.
(A2 = 0V, A1 = A0 = 0V)
I appreciate your great help in advance.
Best regards,
Shinichi