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參數資料
| 型號： | PCA9551 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | LED驅動器 |
| 英文描述： | 8-bit I2C LED driver with programmable blink rates |
| 中文描述： | 8位I2C LED與可編程閃爍率司機 |
| 文件頁數： | 11/21頁 |
| 文件大小： | 161K |
| 代理商： | PCA9551 |
Philips Semiconductors
Product data sheet
PCA9551
8-bit I
2
C LED driver with programmable blink rates
2004 Oct 01
11
Programming example
The following example will show how to set LED0 to LED3 on. It will
then set LED4 and LED5 to blink at 1 Hz at a 50% duty cycle. LED6
and LED7 will be set to blink at 4 Hz and at a 25% duty cycle.
Table 1.
I
2
C-bus
Start
S
PCA9551 address with A0–A2 = LOW
C0h
PSC0 subaddress + auto-increment
11h
Set prescaler PSC0 to achieve a period of 1 second:
Blink period
1
PSC0
1
38
PSC0 = 37
25h
Set PWM0 duty cycle to 50%:
256 – PWM0
256
0.5
PWM0 = 128
80h
Set prescaler PCS1 to achieve a period of 0.25
seconds:
Blink period
0.25
PSC1
1
38
PSC1 = 9
09h
Set PWM1 output duty cycle to 25%:
256 – PWM1
256
0.25
PWM1 = 192
C0h
Set LED0 to LED3 on
00h
Set LED4 and 5 to PWM0, and LED6 or 7 to PWM1
FAh
Stop
P
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PCA9551BS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit I2C-bus LED driver with programmable blink rates |
| PCA9551BS,118 | 功能描述:LED照明驅動器 8-BIT I2C FM OD LED 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 |
| PCA9551BS118 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
| PCA9551BSHP | 功能描述:LED照明驅動器 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 |
| PCA9551BS-T | 功能描述:LED照明驅動器 8-BIT I2C FM OD LED BLK RST 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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