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L99LD01 датащи(PDF) 42 Page - STMicroelectronics

номер детали L99LD01
подробное описание детали  High efficiency constant current LED driver for automotive applications
PDF  69 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99LD01 датащи(HTML) 42 Page - STMicroelectronics

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SPI functional description
L99LD01
42/69
DocID025319 Rev 3
Status registers 2
Address:
0x05h
Type:
R
15
14
13
12
11
10
98765
43210
Reserved
LHM
WD_Status[2:0]
—R
R(1)
R
R(1)
R
R(2)
1.
“Read only”, real time bit.
2.
“Read only” bit. These bits are cleared by a WD re-trigger.
Bit [15:9] Reserved
Bit [8] Led_Ov_Rec
Once this bit is set, the device will make a single trial to recover from an LED
overvoltage.
Bit [7] Ext_Vcc: this bit reflects the signal on the Ext_Vcc pin,
Bit [6] PWM_L: this bit reflects the signal on the PWM_L pin
Bit [5] Standalone: this bit is set if the device operates in standalone mode, without
microcontroller
Bit [4] LHM: reflects the level at LHM pin
Bit [3] Lh_Sw_St: is set if the software limp home mode is activated
Bit [2:0] WD_status[2:0]: these bits indicate the status of the watchdog timer (see Table 14 and
see Figure 27)
Table 14. Watchdog timer status
WD_Status[1]
WD_Status[1]
WD_Status[0]
WD timer status
000
[0…25 %[
001
[25 % … 50 %[
011
[50 % … 75 %[
111
[75 % … 100 %[



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