Hi Gonugunta,
Are you still experiencing the I/O pulse when writing to TCA9535's output register? If you were able to find a solution, we would like to document it here if possible.
Regards, Eric
Part Number: PCA9555 Other Parts Discussed in Thread: TCA9555 Hi E2E,
1. Could you kindly let us know PCA9555 output can be inverted by hardware method?
2. Did we just only set reg 0x04 and 0x05 to inverted the output?
Thnaks!
Part Number: PCA9555 Hi Sir,
I plan to use PCA9555 as an smbus expander as an output signal to trigger high active, but I didn't have external pull up resistor in I/O pin,
Is it suitable for PCA9555?
Thanks
Part Number: PCA9555 Other Parts Discussed in Thread: TCA9555 Hi,
I am trying to establish communication with PCA9555 io-expander chip via I2C, I am receiving NAK and my controller stops communication as expected. I even changed the chip with assumption…
Part Number: PCA9555 Other Parts Discussed in Thread: PCA955 When input data differ from input register state, PCA9555 will trigger the interrupt signal to I2C master, right?
In case I2C master connected eight devices of PCA9555, all of I/O port connected…
Part Number: PCA9555 Hi all,
I could not find the english datasheet. Listed thermal resistance in other language datasheet is 35.5-deg/W. Is it correct value?
Regards, ACGUY
Part Number: PCA9555 Hi,
The PCA9555 functional block diagram (datasheet figure 18) indicates there is an internal 100K pull up resistor on each I/O, causing an IO when configured as input to be pulled high.
The application diagram figure 29 on page 24…
Part Number: PCA9555 Other Parts Discussed in Thread: TCA9555 Customer ask if we have I2C example code for PCA9555? It is best base on MSP430. I try search in TI.com and do not find any design reference for PCA9555 , so I double confirm in here, thanks…
Part Number: TCA9555 Hi team,
I am confused about the description about the power on reset in the datasheet.
There is a description: After that, Vcc must be lowered to 0V and then back up to the operating voltage for a power-reset cycle.
So for the power…