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參數(shù)資料
| 型號(hào)： | LP39542TL |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動(dòng)器 |
| 英文描述： | Advanced Lighting Management Unit |
| 中文描述： | LED DISPLAY DRIVER, PBGA36 |
| 封裝： | 3 X 3 MM, 0.60 MM HEIGHT, 0.50 MM PITCH, MICRO, SMD-36 |
| 文件頁數(shù)： | 21/58頁 |
| 文件大?。?/td> | 2547K |
| 代理商： | LP39542TL |
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RGB LED Blinking Control
LP39542 has a possibility to drive indicator LEDs with RGB1
outputs with programmable blinking time. Blinking function is
enabled with RGB_SEL[1:0] bits set as 01b in 0BH register.
R1_CYCLE_EN, G1_CYCLE_EN and B1_CYCLE_EN bits in
cycle registers (02H, 04H and 06H) enable/disable blinking
function for corresponding output. When EN_BLINK bit is
written high in register 11H, the blinking sequences for all
outputs (which has CYCLE_EN bit enabled) starts simulta-
neously. EN_BLINK bit should be written high after selecting
wanted blinking sequences and enabling CYCLE_EN bits, to
synchronize outputs to get desired lighting effect. R1SW,
G1SW and B1SW bits can be used to enable and disable
outputs when wanted.
RGB1 blinking sequence is set with R1, G1 and B1 blink reg-
isters (01H, 03H and 05H) by setting the appropriate OFF-ON
times. Blinking cycle times are set with R1_CYCLE[2:0],
G1_CYCLE[2:0] and B1_CYCLE[2:0] bits in R1, G1 and B1
CYCLE registers (02H, 04H and 06H). OFF/ON time is a per-
centage of the selected cycle time. Values for setting OFF/
ON time can be seen in following table.
R1, G1 and B1 Blink Registers (01H, 03H and 05H):
Name
Bit
Description
RGB1 ON and OFF time
Bits
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
R1_ON[3:0], R1_OFF[3:0]
G1_ON[3:0], G1_OFF[3:0]
B1_ON[3:0], B1_OFF[3:0]
7-4, 3-0
ON/OFF time
0%
1%
2.5%
5%
7.5%
10%
15%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Blinking ON/OFF cycle is defined so that there will be first
OFF-period then ON-period after which follows an off-period
for the remaining cycle time that can not be set. If OFF and
ON times are together more than 100% the first OFF time will
be as set and the ON time is cut to meet 100%. For example,
if 50% OFF time is set and ON time is set greater than 50%,
only 50% ON time is used, the exceeding ON time is ignored.
If OFF and ON times are together less than 100% the re-
maining cycle time output is OFF.
30008570
21
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP39542TLX | Advanced Lighting Management Unit |
| LP3954 | Advanced Lighting Management Unit |
| LP3954RL | Advanced Lighting Management Unit |
| LP3954RLX | Advanced Lighting Management Unit |
| LP3954TL | Advanced Lighting Management Unit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP39542TL/NOPB | 功能描述:LED照明驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP39542TLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Advanced Lighting Management Unit |
| LP39542TLX/NOPB | 功能描述:LED照明驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP3954RL | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Advanced Lighting Management Unit |
| LP3954RL/NOPB | 功能描述:LED照明驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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