參數(shù)資料
型號: LP5520TLX
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 顯示驅動器
英文描述: RGB Backlight LED Driver
中文描述: LED DISPLAY DRIVER, PBGA25
封裝: 2.77 X 2.59 MM, 0.60 MM HEIGHT, SMD-25
文件頁數(shù): 28/34頁
文件大小: 790K
代理商: LP5520TLX
REGISTER BIT CONVENTIONS
Each register is shown with a key indicating the accessibility of the each individual bit, and the initial condition:
Register Bit Accessibility and Initial Condition
Key
rw
r
–0, –1
Bit Accessibility
Read/write
Read only
Condition after POR
rgb_control (00H) – RGB LEDs Control Register
7
6
5
4
3
2
1
0
seq_mode1
rw-0
seq_mode0
rw-0
en_fade
rw-0
pwm_fast
rw-1
rgb_auto
rw-0
en_b
rw-0
en_g
rw-0
en_r
rw-0
seq_mode[1:0]
Bits 6 - 7
0 0 – overlapping PWM mode
0 1 – sequential mode with 2 PWM pulses
1 0 – sequential mode with 3 PWM pulses
1 1 – sequential mode with 4 PWM pulses
0 – automatic fade disabled
1 – automatic fade enabled
0 – normal PWM frequency 1.22 kHz
1 – high PWM frequency 19.52 kHz
0 – automatic compensation disabled
1 – automatic compensation enabled
0 – blue LED output B
OUT
disabled
1 – blue LED output B
OUT
enabled
0 – green LED output G
OUT
disabled
1 – green LED output G
OUT
enabled
0 – red LED output R
OUT
disabled
1 – red LED output R
OUT
enabled
en_fade
Bit 5
pwm_fast
Bit 4
rgb_auto
Bit 3
en_b
Bit 2
en_g
Bit 1
en_r
Bit 0
current_control_R (01H) – Red LED Current Control Register
7
6
5
4
3
2
1
0
cc_r[7]
rw-0
cc_r[6]
rw-1
cc_r[5]
rw-0
cc_r[4]
rw-1
cc_r[3]
rw-0
cc_r[2]
rw-1
cc_r[1]
rw-0
cc_r[0]
rw-1
cc_r[7:0]
Bits 7 - 0
Adjustment
Typical driver current (mA)
0
0.234
0.468
0.702
...
59.202
59.436
59.670
cc_r[7:0]
0000 0000
0000 0001
0000 0010
0000 0011
...
1111 1101
1111 1110
1111 1111
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