Datasheet

...........continued
Symbol Parameter Condition Min. Max. Unit
t
HD;DA
T
Data hold time f
TWCK
≤ 100 kHz 0 3 × t
CPMCK
(5)
μs
f
TWCK
> 100 kHz 0 3 ×t
CPMCK
(5)
μs
t
SU;DAT
Data setup time f
TWCK
≤ 100 kHz t
LOW -
3 × t
CPMCK
(5)
– ns
f
TWCK
> 100 kHz t
LOW -
3 × t
CPMCK
(5)
– ns
t
SU;STO
Setup time for STOP condition f
TWCK
≤ 100 kHz t
HIGH
– μs
f
TWCK
> 100 kHz t
HIGH
– μs
t
HD;STA
Hold Time (repeated) START Condition f
TWCK
≤ 100 kHz t
HIGH
– μs
f
TWCK
> 100 kHz t
HIGH
– μs
Note:
1.
Required only for f
TWCK
> 100 kHz.
2. C
b
= capacitance of one bus line in pF. Per I
2
C standard, C
b
max = 400pF.
3. The TWCK low period is defined as follows: t
LOW
= ((CLDIV × 2
CKDIV
) + 4) × t
MCK
.
4. The TWCK high period is defined as follows: t
HIGH
= ((CHDIV × 2
CKDIV
) + 4) × t
MCK
.
5. t
CPMCK
= MCK bus period
Figure 58-29. Two-wire Serial Bus Timing
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
TWCK
TWD
t
r
58.13.1.13 GMAC Characteristics
58.13.1.13.1 Timing Conditions
Table 58-63. Load Capacitance on Data, Clock Pads
Supply C
L
Max. Min.
3.3V 20 pF 0 pF
58.13.1.13.2 Timing Constraints
The GMAC must be constrained so as to satisfy the timings of standards shown below and in 58.13.1.13.3 MII
Mode, in MAX corner
.
Table 58-64. GMAC Signals Relative to GMDC
Symbol Parameter Min Max Unit
GMAC
1
Setup for GMDIO from GMDC rising 10 – ns
GMAC
2
Hold for GMDIO from GMDC rising 10 –
GMAC
3
GMDIO toggling from GMDC falling 0
(1)
10
(1)
SAM E70/S70/V70/V71 Family
Electrical Characteristics for SAM ...
© 2019 Microchip T
echnology Inc.
Datasheet
DS60001527D-page 1856