Freescale Semiconductor Evaluation Kit (EVK) for the i.MX51 Applications Processor MCIMX51EXP MCIMX51EXP Ficha De Dados
Códigos do produto
MCIMX51EXP
i.MX51 Applications Processors for Consumer and Industrial Products, Rev. 6
38
Freescale Semiconductor
Electrical Characteristics
The electrical characteristics for I
2
C I/O are listed in
to
. Characteristics are guaranteed
, unless otherwise noted.
Table 31. I
2
C Standard- and Fast-Mode Electrical Parameters
for Low/Medium Drive Strength and OVDD = 2.7 V–3.3 V
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Output fall time,
(low driver strength)
(low driver strength)
tf
from V
IHmin
to V
ILmax
with C
L
from 10 pF to 400 pF
—
—
52
ns
Output fall time,
(medium driver strength)
(medium driver strength)
tf
from V
IHmin
to V
ILmax
with C
L
from 10 pF to 400 pF
—
—
28
ns
Table 32. I
2
C Standard- and Fast-Mode Electrical Parameters
for Low/Medium Drive Strength and OVDD
=
1.65 V–1.95 V
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Output fall time,
(low driver strength)
(low driver strength)
t
of
from V
IHmin
to V
ILmax
with C
L
from 10 pF to 400 pF
—
—
70
ns
Output fall time,
(medium driver strength)
(medium driver strength)
t
of
from V
IHmin
to V
ILmax
with C
L
from 10 pF to 400 pF
—
—
35
ns
Table 33. I
2
C High-Speed Mode Electrical Parameters
for Low/Medium Drive Strength and OVDD
=
2.7 V–3.3 V
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Output rise time (current-source enabled) and
fall time at SCLH
(low driver strength)
fall time at SCLH
(low driver strength)
t
rCL
, t
fCL
with a 3mA external
pull-up current source
and C
L
= 100 pF
—
—
18/21
ns
Output rise time (current-source enabled) and
fall time at SCLH
(medium driver strength)
fall time at SCLH
(medium driver strength)
t
rCL
, t
fCL
with a 3mA external
pull-up current source
and C
L
= 100 pF
—
—
9/9
ns
Output fall time at SDAH
(low driver strength)
(low driver strength)
t
fDA
with C
L
from 10 pF to
100 pF
100 pF
—
—
14
ns
Output fall time at SDAH
(medium driver strength)
(medium driver strength)
t
fDA
with C
L
from 10 pF to
100 pF
100 pF
—
—
8
ns
Output fall time at SDAH
(low driver strength)
(low driver strength)
t
fDA
C
L
= 400 pF
—
—
52
ns
Output fall time at SDAH
(medium driver strength)
(medium driver strength)
t
fDA
C
L
= 400 pF
—
—
27
ns