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參數(shù)資料
| 型號： | LP3944ISQX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | RGB/White/Blue 8-LED Fun Light Driver |
| 中文描述： | LED DISPLAY DRIVER, QCC24 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 249K |
| 代理商： | LP3944ISQX |
Application Notes
(Continued)
TABLE 1. LP3944 REGISTER TABLE
Address (Hex)
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
Note: Registers 1, 8 and 9 are empty and non-functional registers. Register 1 is read-only, with all bits hard-wired to zero. Registers 8 and 9 can be written and read,
but the content does ot have any effect on the operation of the LP3944.
Register Name
Input 1
Register 1
PSC0
PWM0
PSC1
PWM1
LS0
LS1
Register 8
Register 9
Read/Write
Register Function
Read Only
Read Only
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
LED0–7 Input Register
None
Frequency Prescaler 0
PWM Register 0
Frequency Prescaler 1
PWM Register 1
LED0–3 Selector
LED4–7 Selector
None
None
BINARY FOMAT FOR INPUT REGISTERS (READ ONLY)—ADDRESS 0x00 and 0x01
Address 0x00
Bit #
Default value
7
X
6
X
5
X
4
X
3
X
2
X
1
X
0
X
LED7
LED6
LED5
LED4
LED3
LED2
LED1
LED0
X = don’t care
BINARY FORMAT FOR FREQUENCY PRESCALER AND PWM REGISTERS — ADDRESS 0x02 to 0x05
Address 0x02 (PSC0)
Bit #
Default value
PSC0 register is used to program the period of DIM0.
DIM0 = (PSC0+1)/160
The maximum period is 1.6s when PSC0 = 255.
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
Address 0x03 (PWM0)
Bit #
Default value
PWM0 register determines the duty cycle of DIM0. The LED outputs are LOW (LED on) when the count is less than the value in PWM0 and HIGH (LED off) when
it is greater. If PWM0 is programmed with 0x00, LED output is always HIGH (LED off).
7
1
6
0
5
0
4
0
3
0
2
0
1
0
0
0
The duty cycle of DIM0 is: PWM0/256
Default value is 50% duty cycle.
Address 0x04 (PSC1)
Bit #
Default value
PSC1 register is used to program the period of DIM1.
DIM1 = (PSC1 + 1)/160
The maximum period is 1.6s when PSC1 = 255.
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
L
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| LP3944 | RGB/White/Blue 8-LED Fun Light Driver |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3944ISQX/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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP3945 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Battery Charge Management System |
| LP3945ILD | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Battery Charge Management System |
| LP3945ILDX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Battery Charge Management System |
| LP3945LD | 功能描述:IC MANAGEMENT BATT CHARGE 14-LLP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
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