34.14.3 SERCOM in I2C Mode Timing

The following table describes the requirements for devices connected to the I2C Interface Bus. Timing symbols refer to the figure below.

Figure 34-9.  I2C Interface Bus Timing
Table 34-47. I2C Interface Timing(1)
Symbol Parameter Conditions Min. Typ. Max. Units
tR Rise time for both SDA and SCL(3) - - 300 ns
tOF Output fall time from VIHmin to VILmax (3) 10 pF < Cb(2) < 400 pF 7.0 10.0 50.0
tHD;STA Hold time (repeated) START condition fSCL > 100 kHz, Host tLOW-9 - -
tLOW Low period of SCL Clock fSCL > 100 kHz 113 - -
tBUF Bus free time between a STOP and a START condition fSCL > 100 kHz tLOW - -
tSU;STA Setup time for a repeated START condition fSCL > 100 kHz, Host tLOW+7 - -
tHD;DAT Data hold time fSCL > 100 kHz, Host 9 - 12
tSU;DAT Data setup time fSCL > 100 kHz, Host 104 - -
tSU;STO Setup time for STOP condition fSCL > 100 kHz, Host tLOW+9 - -
tSU;DAT;rx Data setup time (receive mode) fSCL > 100 kHz, Client 51 - 56
tHD;DAT;tx Data hold time (send mode) fSCL > 100 kHz, Client 71 90 138
Note:
  1. These values are based on simulation and not covered by test limits in production.
  2. Cb = Capacitive load on each bus line. Otherwise noted, value of Cb set to 20 pF.
  3. These values are based on characterization and not covered by test limits in production.