L6482
Functional description
Doc ID 023768 Rev 1
27/73
register (
). When the external clock source is selected, the device continues
to work with the integrated oscillator for t
extosc
milliseconds and then the clock management
system switches to the OSCIN input.
Figure 12.
OSCIN and OSCOUT pin configuration
Note:
When OSCIN is UNUSED, it should be left floating.
When OSCOUT is UNUSED, it should be left floating.
6.9 Overcurrent
detection
The L6482 measures the load current of each half bridge sensing the V
DS
voltage of all the
Power MOSFETs (
). When any of the V
DS
voltages rise above the programmed
threshold, the OCD flag in the STATUS register is forced low until the event expires and a
GetStatus command is sent to the device (
and
). The
overcurrent event expires when all the Power MOSFET V
DS
voltages fall below the
programmed threshold.
The overcurrent threshold can be programmed by the OCD_TH register in one of 32
available values ranging from 31.25 mV to 1 V with steps of 31.25 mV (
,
UNU
S
ED
O
S
CIN
O
S
COUT
O
S
CIN
O
S
COUT
O
S
CIN
O
S
COUT
2/4/
8
/16 MHz
8
/16/24/
3
2 MHz
8
/16/24/
3
2 MHz
Extern
a
l o
s
cill
a
tor
config
u
r
a
tion
Extern
a
l clock
s
o
u
rce
config
u
r
a
tion
Intern
a
l o
s
cill
a
tor
config
u
r
a
tion
with clock gener
a
tion
O
S
CIN
O
S
COUT
Intern
a
l o
s
cill
a
tor
config
u
r
a
tion
witho
u
t clock
s
o
u
rce
UNU
S
ED
UNU
S
ED
O
S
C_
S
EL = "1xx"
O
S
C_
S
EL = "0xx"
C
L
C
L
EXT_CLK = "0"
EXT_CLK = "1"
AM15042v1
