L9953 STMicroelectronics, L9953 Datasheet - Page 26

• Manufacturer Part Number: L9953
• Description: IC DVR DOOR ACTUATOR POWERSO-36
• Manufacturer: STMicroelectronics

Specifications of L9953

• Applications: Door Actuator
• Current - Supply: 7mA
• Voltage - Supply: 7 V ~ 28 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: PowerSO-36 Exposed Bottom Pad
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Functional description of the SPI
4.10
26/38
SPI - input data and Status registers
Table 19.
Bit
23
22
21
20
19
18
0: 12% 1: 25%
Overvoltage/Un
Current monitor
OC recovery
dervoltage
Enable bit
duty cycle
select bits
Reset bit
recovery
disable
Name
SPI - input data and Status registers 0
Input register 0 (write)
If Enable Bit is set the
device will be switched in
active mode. If Enable Bit
is cleared the device go
into standby mode and all
bits are cleared. After
power-on reset device
starts in standby mode.
If Reset Bit is set both
status registers will be
cleared after rising edge of
CSN input.
This bit defines in
combination with the over-
current recovery bit (Input
Register 1) the duty cycle
in over-current condition of
an activated driver.
If this bit is set the
microcontroller has to
clear the status register
after
undervoltage/overvoltage
event to enable the
outputs.
Depending on
combination of bit 18 and
19 the current image
(1/10.000) of the selected
HS-output will be multi-
plexed to the CM output:
Bit
19
0
1
0
1
Comment
Bit
18
0
0
1
1
Doc ID 14278 Rev 3
Output
OUT8
OUT1
OUT5
OUT4
V
V
S
Temperature
Not ready bit
S
undervoltage
shutdown
Always 1
overvoltage
Thermal
warning
Name
Status register 0 (read)
A broken VCC-or SPI-
connection of the L9953 can
be detected by the
microcontroller, because all 24
bits low or high is not a valid
frame.
In case of an overvoltage or
undervoltage event the
corresponding bit is set and
the outputs are deactivated. If
VS voltage recovers to normal
operating conditions outputs
are reactivated automatically
(if Bit 20 of status register 0 is
not set).
In case of a thermal shutdown
all outputs are switched off.
The microcontroller has to
clear the TSD bit by setting the
Reset Bit to reactivate the
outputs.
This TW bit is for information
purpose only. It can be used
for a thermal management by
the microcontroller to avoid a
thermal shutdown.
After switching the device from
standby mode to active mode
an internal timer is started to
allow charge pump to settle
before the outputs can be
activated. This bit is cleared
automatically after start up
time has finished. Since this bit
is controlled by internal clock it
can be used for synchronizing
testing events (e.g. measuring
filter times).
Comment
L9953 / L9953XP