Part Number: PCA9555 Other Parts Discussed in Thread: TCA9555 Dear TI members,
Due to the design of the PCA9555, we have some questions.
We are wondering if it is necessary to clear INT after reading GPIO high/low?
If necessary, Any suggestions on how…
Part Number: PCA9555 Hi Team,
Can this device work with both input and output signal flow? Such as P0~P7 as input IO, P8~P15 as output IO. Is there any notices with the timing sequence of read and write? Thanks.
BRs,
Francis
Part Number: PCA9555 Other Parts Discussed in Thread: TCA9535 Hi,
On the data sheet, the I/O port can be read as a power-on reset (input state when the power is turned on), but in actual use it seems to be in the output state when the power is turned on…
Part Number: PCA9555 Other Parts Discussed in Thread: TCA9535 , PCA9535 Hi All,
I have a question about PCA9555. The I/O terminal is pulled up internally, but I want to set it to Low immediately after PowerOn. Is it okay to add a 10kΩ pull-down externally…
Part Number: PCA9555 Other Parts Discussed in Thread: TCA9555 Dear Sirs,
While power on, the PCA9555 will have abnormal pull low pulse on SDA to cause I2C device error.
The same design for TCA9555 is no problem.
Please help on it!
Below are the waveform…
Part Number: PCA9555 Hi team
Could you help check if PCA9555 p-port could support 5V input voltage when VCC=3.3V?
It seems available based on D/S but it sounds still a bit counter-intuitive and hence need your confirmation. Thank you in advance.
Part Number: PCA9535 Other Parts Discussed in Thread: PCA9555 , Hi Team,
What's the key spec differences between PCA9535 and PCA9555? I checked the D/S but no findings. Pls help us here. Thanks.
Best,
Stanley.
Part Number: PCA9555 Other Parts Discussed in Thread: TCA9555 dear
When using PCA9555RGER, an I/O expansion chip of TI, it was found that the default state of the I/O pin of the chip was high when it was powered on at normal temperature, but the state…