Part Number: PCA9555 Other Parts Discussed in Thread: PCF8575 , , TCA9555 WE used earlier pcf8575 part number but when we do power on all pins become high , so because of this our power supply become on . ( can we do this high pins low initially ?? )
So…
Part Number: PCA9555 Other Parts Discussed in Thread: PCF8575 , Currently I am using PCF8575 IC of IO expander. With this IC , I am facing issue of all pins are high at power on or reset condition. But I require all pins are low at power on or reset condition…
Part Number: PCA9555 Other Parts Discussed in Thread: TCA9555 Hi,
May I know the part life cycle status of this part PCA9555DW?
Any drop-in suggestion?
Regards
Kapil
Part Number: TCA9555 Other Parts Discussed in Thread: PCA9555 , Hi team,
I have customer design in TCA9555 and PCA9555 at same design.
Here is their block.
And they found out if they turn the switch to low, point B will be 1.6V. And the issue only show…
Part Number: PCA9555 Hello!
I have some question about PCA9555
Implemented GPIO expansion I/F using PCA9555D.
(I2C connection was made between STM32 MCU and PCA9555D.)
Excuse me, but I would like to ask if there is a sample source code for driving the…
Part Number: PCA9555 Other Parts Discussed in Thread: SN74LVC1G57 , SN74LVC1G123 HI sir,
We now have a CPU connect the reset pin on PCA9555 P16, but when we enable the reset function (set the P16 to Low) the CPU cannot perform actions.
The reset function…
Part Number: PCA9555 The PCA9555PWR has the following address pins;
A0 = HIGH
A1 = LOW
A2 = LOW
The first write access results in a NACK. We have tried all address options from the microcontroller and it still gives a NACK.
The start and address look…
Part Number: PCA9555 Dear TI member,
We know the INT pin is cleared by BIOS read IO expander.
We want to confirm that if the interrupt occurs after entering the OS, how can the IO expander INT pin be cleared?
Thanks.
Ariel
Part Number: PCA9555 Hi,
Customer reported I2C SDA/SCL undershoot found with PCA9555. Please see customer description below and help to comment.
Need your support to clarify the observation in using TI PCA9555APW.
We found the I2C clock sent from FPGA…