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LED7708 bảng dữ liệu(PDF) 38 Page - STMicroelectronics

tên linh kiện LED7708
Giải thích chi tiết về linh kiện  16 channels x 85 mA LED driver with boost controller and 4-wire serial interface
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LED7708 bảng dữ liệu(HTML) 38 Page - STMicroelectronics

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Recommended operating conditions
LED7708
38/53
Doc ID 022698 Rev 1
If at least one bit of the CHSTA register is asserted after the error detection sequence, the
XFLT pin is tied low. Both the CHSTA register and the XFLT pin are reset by clearing the
DEN bit of DEVCFG0 or by performing a POR.
8.5.11
Internal registers initialization
The internal registers show the following configuration after a POR.
Table 18.
CHSTA register
Bit
Position
Attribute
Meaning
CHSTA0 to CHSTA15
0
Read only
0= The channel is working properly or is not
used (the corresponding CHSEL bit is cleared)
1= The channel is open or an LED short-circuit
has been detected during the error detection
sequence
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Table 19.
Default configuration of internal registers after POR
Register
Value (binary)
DEVCFG0
0000 0000 0000 0010
DEVCFG1
0000 0000 0100 0000
GSLAT
0000 0000 0000 0000
BRTxx
0000 0000 0000 0000
CHSEL
0000 0000 0000 0000
CHSTA
0000 0000 0000 0000



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