TWI Max Drive (Sink) Current

RE: TWI Max Drive (Sink) Current

Jørgen Holmefjord — Tue, 13 Aug 2019 08:44:20 GMT

[quote user="bob.roozen"]To be sure, we can configure the pins as H0D1 when TWI is enabled to get the 5mA sink current for TWI and SDA, right?[/quote]

Yes, the drive and pull settings should still be configurable when pins are used for TWI peripheral.

[quote user="bob.roozen"]When TWI is disabled or system in OFF mode, is switching back really necessary to S0D1? Or does H0D1 performs as well as S0D1 in TWI disabled or system in OFF. [/quote]

Yes, H0D1 should work as well. S0D1 is the default and is most likely why this is specified in the table.

RE: TWI Max Drive (Sink) Current

Bob — Tue, 23 Jul 2019 15:28:30 GMT

Hi,

To be sure, we can configure the pins as H0D1 when TWI is enabled to get the 5mA sink current for TWI and SDA, right?

When TWI is disabled or system in OFF mode, is switching back really necessary to S0D1? Or does H0D1 performs as well as S0D1 in TWI disabled or system in OFF.

I can understand the other modes will influence the I2C signal, but I don't understand why H0 instead of S0 will influence the signal, cause the high level is still disconnected (D1). Is there an explanation for it?

RE: TWI Max Drive (Sink) Current

Jørgen Holmefjord — Tue, 23 Jul 2019 14:39:40 GMT

Hi,

If nothing else is configured, the pins are standard drive.

Best regards,
Jørgen