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L99LD01 Datenblatt(PDF) 37 Page - STMicroelectronics

Teilenummer L99LD01
Bauteilbeschribung  High efficiency constant current LED driver for automotive applications
PDF  69 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99LD01 Datenblatt(HTML) 37 Page - STMicroelectronics

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L99LD01
SPI functional description
68
Figure 26. SPI read device information
3.4
Address mapping
T
CSN
SDO
SDI
MSB
MSB
MSB
LSB
LSB
LSB
Command Byte
Global Status Byte
(8 bit)
Data
(8 bit)
Don’t care
(8 bit)
1LSB
1
Address
MSB
Table 10. RAM memory map
Address
Name
Access
Content
00h
Reserved
Read/write
Reserved
01h
Control register 1
Read/write
Mux settings, WD period and retrigger
02h
Control register 2
Read/write
Spread spectrum settings, max input current and LED current
settings
03h
Control register 3
Read/write
SW Limp Home, OTA/driver and converter delay control
04h
Status register 1
Read
Detailed status information
05h
Status register 2
Read
WD status, operation mode and LMode error
3E
Trimming and test
Read
Trimming bus and test mode select
3F
Configuration reg.
Read/write
WD retrigger bit
Table 11. ROM memory map
Address
Name
Access
Content
00h
ID header
Read only
4300h (ASSP ST_SPI)
01h
Version
Read only
0100h
02h
Product code 1
Read only
3100h (dec. 49)
03h
Product code 2
Read only
5100h (ASCII ‘Q’)
3Eh
SPI frame ID
Read only
4200h (Watchdog available, 24 bit ST-SPI)



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