Part Number: PCF8574
Hi Team,
Will there be any problem if A0, A1, A2 all floating?
Is there any influence to I2C Address?
Thanks and best regards,
Jamie
Part Number: PCF8574 1, Could you support to share the TI best device instead of PCA9500 (NXP)? Would be there an IO Expander that is pin compatible with PCA9500 or PCF8574, has the same control, and can drive at 400kHz?
2, Would be there an IO Expander…
Other Parts Discussed in Thread: PCF8574 , PCF8575 Hello support, I use am5749 (custom board) ti-processor-sdk-linux-rt-am57xx-evm-06.03.00.106 and ti-processor-sdk-linux-am57xx-evm-06.03.00.106.
The problem is when the board is started my pcf8574 device…
Part Number: PCF8574 Hi,
I have two questions about the PCF8574 device:
1. What are the electrical differences between the PCF8574 and the PCF8574A (beside the address range)? I'm aware of the document scyb031. In one E2E thread I have read that for new…
Part Number: PCF8574 Hi team,
My customer is searching for a I2C to I/O expander solution. The I/O requirement for each device is at least 4 I/O ports. But the I2C master needs to control 64 I2C slave. So the I2C expander device must have at least 6 address…
Hi Wang,
Omar mentions to debug i2C peripheral use CCS register view and consult x49c MCU Technical Resource Manual (TRM) to properly configure i2C for PCF8574. About the graphics character generator, may require some C programming, not just port letter…
Part Number: PCF8574 Hello,
I have a question for PCF8574.
My understanding of this PCF8574 architecture is that its high output means internal pull-up with 100uA current source and its low output means connecting to GND. So I think the maximum source…
Part Number: PCF8574 Hi team
Can PCF8574's I2C frequency clock work at 400kHz?
Even if I search the datasheet, I can't see the clear description. So please let me make sure this.
Regards,
Noriyuki Takahashi
Part Number: MSP430G2553 Other Parts Discussed in Thread: PCF8574 I'm a starter, I'm in need of an example code for displaying data on the 16x2 LCD with MSP430G2553 communication through I2C with PCF8754 module.