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參數(shù)資料
| 型號： | PCA9553D |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | 4-bit I2C-bus LED driver with programmable blink rates |
| 封裝： | PCA9553D/01<SOT96-1 (SO8)|<<http://www.nxp.com/packages/SOT96-1.html<1<week 5, 2005,;PCA9553D/01<SOT96-1 (SO8)|<<http://www.nxp.com/packages/SOT96-1.html<1<week 5, |
| 文件頁數(shù)： | 4/26頁 |
| 文件大?。?/td> | 146K |
| 代理商： | PCA9553D |
PCA9553_6
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 06 — 29 December 2008
12 of 26
NXP Semiconductors
PCA9553
4-bit I2C-bus LED driver with programmable blink rates
9.2 Programming example
The following example shows how to set LED0 and LED1 off. It will then set LED2 to blink
at 1 Hz, 50 % duty cycle. LED3 will be set to blink at 4 Hz, 25 % duty cycle. PCA9553/01
is used in this example.
Fig 16. High value resistor in parallel with
the LED
Fig 17. Device supplied by a lower voltage
002aac189
LED
VDD
LEDn
100 k
VDD
002aac190
LED
VDD
LEDn
3.3 V
5 V
Table 11.
Programming PCA9553
Program sequence
I2C-bus
START
S
PCA9553 address
C4h
PSC0 subaddress + Auto-Increment
11h
Set prescaler PSC0 to achieve a period of 1 second:
PSC0 = 43
2Bh
Set PWM0 duty cycle to 50 %:
PWM0 = 128
80h
Set prescaler PSC1 to achieve a period of 0.25 seconds:
PSC1 = 10
0Ah
Set PWM1 output duty cycle to 25 %:
PWM1 = 192
C0h
Set LED0 on, LED1 off, LED2 set to blink at PSC0, PWM0, LED3 set to blink at
PSC1, PWM1
E4h
STOP
P
Blink period
1
PSC0
1
+
44
------------------------
==
256
PWM 0
–
256
--------------------------------
0.5
=
Blink period
0.25
PSC1
1
+
44
------------------------
==
256
PWM 1
–
256
--------------------------------
0.25
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9553D/01 | 功能描述:LED照明驅(qū)動器 LED DRVR 4BIT I2C 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 |
| PCA9553D/01,112 | 功能描述:LED照明驅(qū)動器 LED DRVR 4BIT I2C 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 |
| PCA9553D/01,118 | 功能描述:LED照明驅(qū)動器 4-BIT I2C FM OD LED BLK 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 |
| PCA9553D/01112 | 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: |
| PCA9553D/02 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit I2C-bus LED driver with programmable blink rates |
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