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參數(shù)資料
| 型號： | LP3954RL |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | Advanced Lighting Management Unit |
| 中文描述： | LED DISPLAY DRIVER, PBGA36 |
| 封裝： | 3 X 3 MM, 0.65 MM HEIGHT, 0.50 MM PITCH, MICRO, SMD-36 |
| 文件頁數(shù)： | 30/56頁 |
| 文件大?。?/td> | 5801K |
| 代理商： | LP3954RL |
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Logic Interface Characteristics
(1.65V
≤
V
DDIO
≤
V
DD1,2
V) (Unless otherwise noted).
Symbol
Parameter
LOGIC INPUTS SS, SI, SCK/SCL, SYNC/PWM, IF_SEL, EN_FLASH
V
IL
Input Low Level
V
IH
Input High Level
I
I
Logic Input Current
Conditions
Min
Typ
Max
Units
0.2×V
DDIO
1.0
400
V
0.8×V
DDIO
1.0
V
μA
f
SCL
Clock Frequency
I
2
C Mode
kHz
SPI Mode,
V
DDIO
> 1.8V
SPI Mode,
1.65V
≤
V
DDIO
< 1.8V
13
MHz
5
MHz
LOGIC OUTPUT SO
V
OL
Output Low Level
I
SO
= 3 mA
V
DDIO
> 1.8V
I
SO
= 2 mA
1.65V
≤
V
DDIO
< 1.8V
I
SO
= 3 mA
V
DDIO
> 1.8V
I
SO
= -2 mA
1.65V
≤
V
DDIO
< 1.8V
0.3
0.5
V
0.3
0.5
V
OH
Output High Level
V
DDIO
0.5
V
DDIO
0.3
V
V
DDIO
0.5
V
DDIO
0.3
I
L
LOGIC OUTPUT SDA
V
OL
Output Leakage Current V
SO
= 2.8V
1.0
μA
Output Low Level
I
SDA
= 3 mA
0.3
0.5
V
Control Interface
The LP3954 supports two different interface modes:
SPI interface (4 wire, serial)
I
2
C compatible interface (2 wire, serial)
User can define the serial interface by IF_SEL pin. IF_SEL=0
selects the I
2
C mode.
SPI INTERFACE
LP3954 is compatible with SPI serial bus specification and it operates as a slave. The transmission consists of 16-bit Write and
Read Cycles. One cycle consists of 7 Address bits, 1 Read/Write (RW) bit and 8 Data bits. RW bit high state defines a Write Cycle
and low defines a Read Cycle. SO output is normally in high-impedance state and it is active only when Data is sent out during a
Read Cycle. A pull-up resistor may be needed in SO line if a floating logic signal can cause unintended current consumption in the
input circuits where SO is connected.The Address and Data are transmitted MSB first. The Slave Select signal SS must be low
during the Cycle transmission. SS resets the interface when high and it has to be taken high between successive Cycles. Data is
clocked in on the rising edge of the SCK clock signal, while data is clocked out on the falling edge of SCK.
20132246
SPI Write Cycle
www.national.com
30
L
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP3954RLX | Advanced Lighting Management Unit |
| LP3954TL | Advanced Lighting Management Unit |
| LP3954TLX | Advanced Lighting Management Unit |
| LP3958 | Lighting Management Unit with High Voltage Boost Converter |
| LP3958TL | Lighting Management Unit with High Voltage Boost Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3954RL/NOPB | 功能描述:LED照明驅(qū)動器 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP3954RLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Advanced Lighting Management Unit |
| LP3954RLX/NOPB | 功能描述:LED照明驅(qū)動器 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP3954TL | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Advanced Lighting Management Unit |
| LP3954TL/NOPB | 功能描述:LED照明驅(qū)動器 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
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