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參數(shù)資料
| 型號： | LP3950SL |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅動器 |
| 英文描述： | Color LED Driver with Audio Synchronizer |
| 中文描述： | LED DISPLAY DRIVER, QCC32 |
| 封裝： | 4.50 X 5.50 MM, 0.80 MM HEIGHT, 0.50 MM PITCH, CSP-32 |
| 文件頁數(shù)： | 8/31頁 |
| 文件大?。?/td> | 1085K |
| 代理商： | LP3950SL |
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Logic Interface Characteristics
(Continued)
(1.80V
≤
V
≤
V
V). Limits in standard typeface are for T
J
= +25C. Limits in
boldface
type apply over the operating
ambient temperature range (40C
≤
T
A
≤
+85C).
Symbol
Parameter
Conditions
LOGIC INPUTS DME, AMODE (Internal pull down 1 M
)
I
I
Logic Input Current
Min
Typ
Max
Units
1.0
6.0
μA
Logic Interface Characteristics, Low I/O Voltage
(1.65V
≤
V
DDIO
<
1.80V) . I
2
C compatible interface only.
Symbol
Parameter
LOGIC INPUTS SCL, PWM_LED, IF_SEL
V
IL
Input Low Level
V
IH
Input High Level
I
I
Logic Input Current
f
SCL
Clock Frequency
I
2
C Mode
LOGIC I/O SDA
V
OL
Output Low Level
I
SDA
= 3.0 mA
LOGIC INPUTS DME, AMODE (Internal pull down 1 M
)
V
IL
Input Low Level
V
IH
Input High Level
I
I
Logic Input Current
Conditions
Min
Typ
Max
Units
0.35
V
V
μA
kHz
V
DDIO
0.35
1.0
1.0
200
0.3
0.5
V
0.35
V
V
μA
V
DDIO
0.35
1.0
6.0
Logic Input NRST Characteristics
(1.65V
≤
V
DDIO
≤
V
DD1,2
V).
Symbol
Parameter
V
IL
Input Low Level
V
IH
Input High Level
I
I
Logic Input Current
t
NRST
Reset Pulse Width
Conditions
Min
Typ
Max
0.5
Units
V
V
μA
1.3
1.0
1.0
Note: Guaranteed by
design
10
μs
Control Interface
The LP3950 supports three different interface modes:
1) SPI interface (4 wire, serial)
2) I
2
C compatible interface (2 wire, serial)
3) Direct enable (2 wire, enable lines)
User can define the serial interface by the IF_SEL pin. The
following table shows the pin configuration for both interface
modes. Note that the pin configurations will be based on the
status of the IF_SEL pin.
IF_SEL
HIGH
Interface
Pin Configuration
Comment
SPI
SCK
SI
SO
SS
SCL
SDA
SI
SO
(clock)
(data in)
(data out)
(chip select)
(clock)
(data in/out)
(I
2
address)
(NC)
LOW
I
2
C Compatible
Use pull up resistor for SCL.
Use pull up resistor for SDA.
SI HIGH
→
address is 51’h;
SI LOW
→
address is 50’h;
Unused pin SO can be left unconnected.
SPI Interface
The transmission consists of 16-bit write and read cycles.
One cycle consists of seven address bits, one read/write
(R/W) bit and eight data bits. R/W 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 during
when data is sent out during a read cycle. A pull-up or
pull-down resistor may be needed for SO line if a floating
logic signal can cause unintended current consumption in
the circuitry.
The address and data are transmitted Most Significant Byte
(MSB) first. The Slave Select signal (SS) must be low during
the cycle transmission. SS resets the interface when high
L
www.national.com
8
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|---|---|
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LP3950SL/CSP1 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
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| LP3950SLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Color LED Driver with Audio Synchronizer |
| LP3950SLX/NOPB | 功能描述:IC LED DRVR WHITE BCKLGT 32-TSCP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅動器 系列:PowerWise® 標準包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓撲:PWM，切換式電容器（充電泵） 輸出數(shù):1 內部驅動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應商設備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
| LP3952 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:6-Channel Color LED Driver with Audio Synchronization |
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