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L9951
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
Electric
al specific
ations
L995
1 / L9951XP
16/36
Doc ID 14173
Rev 9
Figure 3.
SPI - transfer timing diagram
Figure 4.
SPI - input timing
T
able 17.
EN, CSN timing
(1)
1.
See
Figure 7
Symbol
Pa
rameter
T
est condition
Min
.
T
yp.
Max.
Unit
t
EN_CSN_LO
Minimu
m EN
high b
efore
sendin
g first SPI fra
me, i.e.
CSN going low
T
rans
fer of
SPI-c
omma
nd
to input
registe
r
20
50
µ
s
t
CSN_HI,min
Minimum CSN HI time
between two
SPI frames
T
rans
fer of
SPI-c
omma
nd
to input
registe
r
24
µ
s
0
1
0
1
tim
e
tim
e
tim
e
tim
e
tim
e
CSN
high to low
: DO enabled
actual da
ta
DI: data
will be accepted on the rising edge of CLK
signal
new data
CSN
CLK
DI
DO
e.g.OUT1
DO: data
will change on the falling edge of CLK signal
status inform
ation
fault bit
CSN low
to high: actual data
i
s
tran
sfere
d to outp
ut p
ower switche
s
old data
1
2
3
4
5
6
7
8
9
10
11
0
12
13
14
15
1
0
actual data
1
2
3
4
5
6
7
8
9
10
11
0
12
13
14
15
1
2
3
4
5
6
7
8
9
10
11
0
12
13
14
15
0.8 VCC
0.8 VCC
0.8 VCC
0.2 VCC
0.2 VCC
0.2 VCC
Va
l
i
d
Va
l
i
d
CSN
CLK
DI
t
set CSN
t
CLKH
t
set CLK
t
CLKL
t
ho
ld
DI
t
set DI
L9951 / L9
951XP
Electrica
l specifica
tions
Doc ID 1
4173 Re
v 9
17/36
Figure 5.
SP
I - DO valid data delay time and va
lid time
Figure 6.
SPI - DO enable and disable
time
0
.
8 V
CC
0
.
8
V
C
C
0
.
8
V
C
C
0
.
2
V
C
C
0
.
2
V
C
C
0
.
2 V
CC
C
L
K
DO
(
l
o
w
t
o
h
i
g
h
)
DO
(hi
g
h
to
lo
w
)
0
.
5 V
CC
t
r i
n
t
r DO
t
f
DO
t
d D
O
t
f
i
n
CSN
t
f in
r in
t
DO
DO
en
DO
tr
i L
t
t
dis
DO L
tr
i
50%
0.8 VCC
0.2 VCC
50%
50%
en
DO
tr
i H
t
t
dis
D
O H
t
ri
C = 10
0 pF
L
C = 10
0 pF
L
pu
ll
-u
p
l
oa
d
to V
C
C
pul
l-
do
wn load
t
o
GND
Electric
al specific
ations
L995
1 / L9951XP
18/36
Doc ID 14173
Rev 9
Figure 7.
SPI - driver turn-on/off timing, minimum CSN HI time
Figure 8.
SPI - timing of st
atu
s bit 0 (fault condition)
CS
N
dON
t
20%
80%
t
r i
n
f in
t
OFF
t
dOF
F
t
OF
F st
ate
ON st
ate
OFF st
ate
ON
sta
te
ON
t
out
put c
urrent
of a
driver
50%
50%
80%
20%
20%
80%
50%
out
put c
urrent
of a
driver
CSN
low to
high: dat
a from
shif
t regis
ter
is tr
ansfer
red to output
power
switch
es
t
CSN_HI,min
CSN
CLK
DI
DO
CSN high to
l
ow and CLK st
ays low
: status
infor
mation of
data b
it 0 (
fault
condit
ion) is
trans
fered to D
O
D
I: data is not accepted
DO: status
inf
ormatio
n of dat
a bit 0 (
fault
con
ditio
n) wil
l stay
as long
as CSN is low
tim
e
tim
e
tim
e
tim
e
0
-
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
L9951
Mfr. #:
Buy L9951
Manufacturer:
STMicroelectronics
Description:
Motor / Motion / Ignition Controllers & Drivers REAR DOOR ACTUATOR DRIVER
Lifecycle:
New from this manufacturer.
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