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LP5562 bảng dữ liệu(PDF) 12 Page - Texas Instruments

tên linh kiện LP5562
Giải thích chi tiết về linh kiện  LP5562 Four-Channel RGB- or White-LED Driver With Internal Program Memory and Independent Channel Control
PDF  52 Pages
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nhà sản xuất  TI2 [Texas Instruments]
Trang chủ  https://www.ti.com
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LP5562 bảng dữ liệu(HTML) 12 Page - Texas Instruments

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background image
W PWM
Register
R PWM
Register
G PWM
Register
B PWM
Register
ENGINE 1
ENGINE 2
ENGINE 3
W LED
PWM
R LED
PWM
B LED
PWM
G LED
PWM
00
01
10
11
W_ENG_SEL bits
00 - 10
11
00 - 10
11
00 - 10
ENG1_MODE bits
ENG2_MODE bits
ENG3_MODE bits
00
01
10
11
00
01
10
11
R_ENG_SEL bits
00
01
10
11
G_ENG_SEL bits
B_ENG_SEL bits
11
SVA-30197406
12
LP5562
SNVS820B – APRIL 2013 – REVISED DECEMBER 2016
www.ti.com
Product Folder Links: LP5562
Submit Documentation Feedback
Copyright © 2013–2016, Texas Instruments Incorporated
Figure 14. Controlling LED Outputs
The LED driver PWM control with 8-bit I2C register is defined in Table 2.
Table 2. LED Driver PWM Control Bits Register 70h
NAME
BIT
DESCRIPTION
PWM
7:0
LED PWM value during I2C control operation mode
0000 0000 = 0% PWM
1111 1111 = 100% PWM
If the LED driver outputs are controlled with engines, the engine adjusts the PWM according to the program
code. However, when the engine mode bits are set to ‘11’, the engine is set to direct mode. In direct mode the
PWM controls of engines comes:
•
Engine 1 PWM control comes from B PWM I2C register (02h)
•
Engine 2 PWM control comes from G PWM I2C register (03h)
•
Engine 3 PWM control comes from R PWM I2C register (04h)
When the engine mode bits are set to '11' along with the LED PWM Output selection bits, it is possible to control
all LED outputs from one I2C register.



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