Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Data Sheet
Product codes
ATSAMD20-XPRO
598
Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
32.12.3 SERCOM in I
2
C Mode Timing
describes the requirements for devices connected to the I
2
C Interface Bus. Timing symbols refer to
Figure 32-14.I
2
C Interface Bus Timing
Table 32-43. I
2
C Interface Timing
Note:
1.
These values are based on simulation. These values are not covered by test limits in production.
2.
Cb = Capacitive load on each bus line. Otherwise noted, value of C
b
set to 20pF.
3.
These values are based on characterization. These values are not covered by test limits in production.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
t
R
Rise time for both SDA and SCL
(3)
I
-
-
300
ns
t
OF
Output fall time from V
IHmin
to V
ILmax
(3)
10pF < C
b
< 400pF
7.0
10.0
50.0
t
HD;STA
Hold time (repeated) START condition
f
SCL
> 100kHz, Master
t
LOW
-9
-
-
t
LOW
Low period of SCL Clock
f
SCL
> 100kHz
113
-
-
t
BUF
Bus free time between a STOP and a
START condition
START condition
f
SCL
> 100kHz
t
LOW
-
-
t
SU;STA
Setup time for a repeated START condition
f
SCL
> 100kHz, Master
t
LOW
+7
-
-
t
HD;DAT
Data hold time
f
SCL
> 100kHz, Master
9
-
12
t
SU;DAT
Data setup time
f
SCL
> 100kHz, Master
104
-
-
t
SU;STO
Setup time for STOP condition
f
SCL
> 100kHz, Master
t
LOW
+9
-
-
t
SU;DAT;rx
Data setup time (receive mode)
f
SCL
> 100kHz, Slave
51
-
56
t
HD;DAT;tx
Data hold time (send mode)
f
SCL
> 100kHz, Slave
71
90
138
t
SU;STA
t
LOW
t
HIGH
t
LOW
t
OF
t
HD;STA
t
HD;DAT
t
SU;DAT
t
SU;STO
t
BUF
SCL
t
R
SDA