參數(shù)資料
型號(hào)： PCA9552PW
廠商： NXP Semiconductors N.V.
元件分類： LED驅(qū)動(dòng)器
英文描述： 16-bit I2C-bus LED driver with programmable blink rates
封裝： PCA9552BS<SOT616-1 (HVQFN24)|<<http://www.nxp.com/packages/SOT616-1.html<1<Always Pb-free,;PCA9552D<SOT137-1 (SO24)|<<http://www.nxp.com/packages/SOT137-1.html<1<we
文件頁數(shù)： 6/28頁
文件大?。?/td> 159K
代理商： PCA9552PW
PCA9552_5
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 05 — 9 March 2006
14 of 28
Philips Semiconductors
PCA9552
16-bit I2C-bus LED driver with programmable blink rates
8.2 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. LED8 to LED15 will be set to off.
Fig 15. High value resistor in parallel with
the LED
Fig 16. 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 PCA9552
Program sequence
I2C-bus
START
S
PCA9552 address with A0 to A2 = LOW
C0h
PSC0 subaddress + Auto-Increment
12h
Set prescaler PSC0 to achieve a period of 1 second:
PSC0 = 43
2Bh
Set PWM0 duty cycle to 50 %:
PWM0 = 128
80h
Set prescaler PCS1 to achieve a period of 0.25 seconds:
PSC1 = 10
0Ah
Set PWM1 output duty cycle to 25 %:
PWM1 = 192
C0h
Set LED0 to LED3 on
00h
Set LED4 and LED5 to PWM0, and LED6 or LED7 to PWM1
FAh
Set LED8 to LED11 off
55h
Set LED12 to LED15 off
55h
STOP
P
Blink period
1
PSC0
1
+
44
-----------------------
==
256
PWM0
–
256
--------------------------------
0.5
=
Blink period
0.25
PSC1
1
+
44
-----------------------
==
256
PWM1
–
256
--------------------------------
0.25
=
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9552PW,112 功能描述:LED照明驅(qū)動(dòng)器 I2C LED BLNKER 16BIT 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
PCA9552PW,118 功能描述:LED照明驅(qū)動(dòng)器 16-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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
PCA9552PW118 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:
PCA9553 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit I2C LED driver with programmable blink rates
PCA9553D 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit I2C LED driver with programmable blink rates
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