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LED2472GQTR Datasheet(PDF) 20 Page - STMicroelectronics

Part # LED2472GQTR
Description  24-channels LED driver with error detection and gain control
PDF  39 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LED2472GQTR Datasheet(HTML) 20 Page - STMicroelectronics

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Digital blocks
LED2472G
20/39
DocID024620 Rev 3
managed as described in Table 8 where a description is provided for each bit. The default
value of the configuration register (when the device is switched ON or after a reset) is all bits
set to “0”. To change anything in the configuration register, a 24-bit digital word must be sent
(CFG-0 represents the LSB, CFG-23 the MSB).
Figure 10. Configuration register
Table 8. Configuration register
BIT
Definition
Attribute
read/write
Configuration register function description
Default
CFG-0
RED
current range
R/W
”0” low current range
“1” high current range
0
CFG-1
GREEN current
range
R/W
”0” low current range
“1” high current range
0
CFG-2
BLUE
current range
R/W
”0” low current range
“1” high current range
0
CFG-3
RED
voltage det. thr.
R/W
“0” LED short-circuit detection threshold 2 V
“1” LED short-circuit detection threshold 3 V
0
CFG-4
GREEN
voltage det. thr.
R/W
“0” LED short-circuit detection threshold 2 V
“1”LE D short-circuit detection threshold 3 V
0
CFG-5
BLUE
voltage det. thr.
R/W
“0” LED short-circuit detection threshold 2 V
“1” LED short-circuit detection threshold 3 V
0
CFG-6
Auto OFF
R/W
“0” device always ON
”1” auto power shutdown active (Auto OFF)
0
CFG-7
SDO delay
R/W
“0” SDO half clock delay disabled
“1” SDO half clock delay enabled
0
CFG-8
Gradual output
delay
R/W
“0” gradual outputs delay is applied
”1” all channels switch ON and OFF
simultaneously
0



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