We are using ADP5585 in our design for interfacing to a keyboard. The schematics is as shown in the attachment. The lines KBC0,1,2,3 and KBR0,1,2,3 are going to a 4 X 4 matrix KEYPAD connected with about 15 inches long ribbon cable.
The capacitors C2…
We are facing a false key detection on our product. We are using the Keypad Decoder ADP5585 IC for the KEypad logic on our product.
The datasheet of ADP5585 specifies that a Key press will be detected after a key scan during which the columns…
I would like to ask questions on the ADP5585 GPI.
Q: Under the following condition, how can I figure out the times given below , respectively?
Condition: PSC_FREQ=00 => 50kHz, Debounce filter enabled.
1) time 1 : The times from OSC_EN
I am trying to use ADP5585 as keypad decoder being used in our Project. I have successfully written data to it using I2C Interface. But I am having trouble reading data from it using repeated start. I don't know why I am not able to read data…
My questions about the ADP5585 are follows . Your advice would be appreciated.
1) Can the RST pin be released ( set HIGH) as soon as the power supply voltage has been reached its specified value?
Or some wait time required ?
Hey, I have a problem with ADP5585 - I can read status value, when I press button read event fifo then clear int flag etc, but when I want to use interrupt pin - I can't even read status register - always 0, device generate first interrupt and then I…
The ADP5587 has pull-ups enabled by default on start-up. The maximum recommended sink current is 1mA per pin.
Other chips to consider are the ADP5585, ADP5586, and the ADP5589. These are able to source up to 5 mA and sink up to 10 mA per…
1) For the keypad, we don't recommend using RC filters. The pins are well protected from ESD, and as long as the wires running to the KP pins are not ridiculously long, it should be good without filtering.
2) The 100 kΩ resistors are not…