For a time period exceeding t, Plus i – Rainbow Electronics ATA6664 User Manual
Page 7
7
9146E–AUTO–03/11
Atmel ATA6663/ATA6664
Figure 3-3.
Floating LIN Bus During Sleep Mode
If the Atmel
®
ATA6663/ATA6664 is in sleep mode and the voltage level at the LIN is in domi-
nant state (V
LIN
< V
BUSdom
) for a time period exceeding t
mon
(during a short circuit at LIN, for
example), the IC switches back to sleep mode. The VS current consumption then consists of
I
VSsleep
plus I
LINWAKE
. After a positive edge at pin LIN the IC switches directly to fail-safe mode
(see
Figure 3-4.
Short Circuit to GND on the LIN Bus During Sleep Mode
I
V
Ss
leep
I
V
Ss
leep
I
V
S
f
a
il
+ I
LINw
a
ke
I
V
Ss
leep
V
BU
S
dom
V
LINL
I
V
S
t
mon
LIN Pre-w
a
ke
LIN domin
a
nt
s
t
a
te
LIN BU
S
Mode of
oper
a
tion
Int. P
u
ll-
u
p
Re
s
i
s
tor
RLIN
W
a
ke-
u
p Detection Ph
as
e
off (di
sab
led)
S
leep Mode
S
leep Mode
S
leep Mode
I
V
Ss
leep
I
V
S
f
a
il
+ I
LINw
a
ke
I
V
Ss
leep
V
BU
S
dom
V
LINL
LIN Pre-w
a
ke
LIN domin
a
nt
s
t
a
te
LIN BU
S
I
V
S
Mode of
oper
a
tion
Int. P
u
ll-
u
p
Re
s
i
s
tor
RLIN
off (di
sab
led)
on (en
ab
led)
W
a
ke-
u
p Detection Ph
as
e
S
leep Mode
F
a
il-
Sa
fe Mode
t
mon
t
mon