⚠️
Hi there.. thanks for coming to the forums. Exciting news! we’re now in the process of moving to our new forum platform that will offer better functionality and is contained within the main Dialog website. All posts and accounts have been migrated. We’re now accepting traffic on the new forum only - please POST any new threads at https://www.dialog-semiconductor.com/support . We’ll be fixing bugs / optimising the searching and tagging over the coming days.
2 posts / 0 new
Last post
magergar
Offline
Last seen: 7 months 4 days ago
Joined: 2020-05-26 18:20
DA14531 Digital Logic Level

What is the logic level for the module DA14531 ?
More specifically what is the voltage that the module detect for a 1  on the GPIO?

I'm asking this because  I want to use an I2C isolator  but this kind of device has a voltage reference (around 0.6V) on one side so it doesn't create an infinite loop
and I'm able send data but can't recieve, and looking at the osciloscope  I found that a signal that is not completely driven to ground (an acknoledge bit send by the slave) is not recognize by the module, and I could not find anything in the datasheet.

I know is not my software since I can communicate with the I2C sensor if connected directly.

PM_Dialog
Offline
Last seen: 1 week 5 days ago
Staff
Joined: 2018-02-08 11:03
Hi magergar,

Hi magergar,

Thanks for your question online and for your interest in our TINY module BLE solution. Please see DA14531 Datasheet and Table 16: Digital Pad - Recommended Operating Conditions in section 3.11 Digital I/O Characteristics.

Thanks, PM_Dialog