3.4 TWI - Two-Wire Interface
A clarification of the clock stretching in the SDA Setup Time (SDASETUP) bit description in the TWI Control A (CTRLA) register has been made.
Bit 4 - SDASETUP SDA Setup Time
This bit is used in TWI Client mode with clock stretching to select the clock hold time and ensure the minimum setup time on the SDA out signal.
| Value | Name | Description |
|---|---|---|
0 | 4CYC | SDA setup time is four clock cycles |
1 | 8CYC | SDA setup time is eight clock cycles |