參數(shù)資料
型號： L9953LXPTR
廠商： STMICROELECTRONICS
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO36
封裝： ROHS COMPLAINT, SSOP-36
文件頁數(shù)： 19/35頁
文件大?。?/td> 505K
代理商： L9953LXPTR
Functional description of the SPI
L9953LXP
Doc ID 16185 Rev 1
4.8
SPI - input data and status registers
Table 18.
SPI - input data and status registers 0
Bit
Input register 0 (write)
Status register 0 (read)
Name
Comment
Name
Comment
23
Enable bit
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.
Always 1
A broken VCC-or SPI-
connection of the L9953LXP
can be detected by the
microcontroller, because all 24
bits low or high is not a valid
frame.
22
Reset bit
If reset bit is set both
status registers will be
cleared after rising edge of
CSN input.
VS overvoltage
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).
21
OC recovery
duty cycle
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.
VS undervoltage
0: 12% 1: 25%
20
Overvoltage/
undervoltage
recovery
disable
If this bit is set the
microcontroller has to
clear the status register
after
undervoltage/overvoltage
event to enable the
outputs.
Thermal
shutdown
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.
19
Current monitor
select bits
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:
Temperature
warning
This TW bit is for information
purpose only. It can be used
for a thermal management by
the microcontroller to avoid a
thermal shutdown.
18
Bit
19
Bit
18
Output
Not ready bit
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).
00
OUT8
10
OUT1
01
OUT5
11
OUT4
相關(guān)PDF資料
PDF描述
L9953LXP SPECIALTY CONSUMER CIRCUIT, PDSO36
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L9954LXP 制造商:STMicroelectronics 功能描述:
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