CLK_TCD frequencies above maximum
CLK_TCD_SYNC must be prescaled with the Synchronization Prescaler (SYNCPRES in
TCDn.CTRLA), so the synchronizer clock meets these specifications
Table 1. Timer/Counter D Maximum
Frequency(1)
Symbol
Description
Condition
Max.
Unit
fCLK_TCD_SYNC
CLK_TCD_SYNC maximum frequencies
VDD = [1.8, 5.5]V
TA = [-40, 125]°C
8
MHz
VDD = [2.7, 5.5]V
TA = [-40, 125]°C
16
VDD = [4.5,
5.5]V
TA = [-40, 105]°C
32
TA = [-40, 125]°C
20
Note:
1.These parameters are for design guidance
only and are not covered by production test limits.