Part Number: TCAL9539-Q1 Hi All,
I am using the tcal9539rtwrq1 part for my application. I am using the AVR microcontroller,
The IO expander controlled by AVR I2C Bus (400KHz operation).
Query: I want to know how much delay will cause to control…
Part Number: TCAL9539-Q1 Other Parts Discussed in Thread: TCAL9539 Tool/software: Hello TI,
I am using TCAL9539-Q1 for Programmable wakeup, Inputs will be Ignition and CAN.
What will be the Input voltage threshold values (VIH, VIL) when GPIO Pins…
Hi Kevin,
Is the measurement of 120 ohms to GND while the device is unpowered? This would indicate some internal damaged to the SDA pull-down driver.
If the TCAL9539-Q1 is actively in a stuck low condition, and then the resistance is measured, it…
Part Number: TCAL9539-Q1 Other Parts Discussed in Thread: TCAL9539 Tool/software: Hi team,
During the hardware bring-up, we encountered an issue with an unexpected voltage level on a specific signal. After removing some zero-ohm jumpers for debugging…
Part Number: TCAL9539-Q1 Other Parts Discussed in Thread: PCF8574 , TCA9554 , TCA9554A , TCA9555 , PCF8574A , PCA9554A , PCA9555 , PCA9554 , PCF8575
Tool/software:
Hello Team,
In our design we are going to use TCAL9539RTWRQ1 IC ,we have created…
Part Number: TCAL9539-Q1 Other Parts Discussed in Thread: TCAL9539 Tool/software: hi team:
We are using TCAL9539-Q1 as IO expander, and occasionally there are some chips have the issue that I2C cannot be found and all output are set to high. In our…
Part Number: TCAL9539-Q1 Tool/software: Hi Expert,
Hope you have a nice day!
How to understand the tRT, tFT, tTRR_GND and tTRR_POR50?
Is my understanding right as below?
tRT, tFT (in red rectangular) are the features of TCAL9539-Q1…
Part Number: TCAL9539-Q1 Other Parts Discussed in Thread: TCAL9539 Tool/software: Hi Expert,
Have a nice day!
Customer use TCAL9539-Q1 and find some issues need your help.
Issue: When the MCU meet I2C communication failure (Such as I2C busy…
Part Number: TCAL9539-Q1 Other Parts Discussed in Thread: TMAG5173-Q1 , , TCAL9539
Tool/software:
Hello,
We are using multiple TMAG5173-Q1 and a single TCAL9539-Q1 IC on the same I2C bus in our project. If we start the measurement simultaneously…
