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參數(shù)資料
| 型號： | PCA9550D |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | 2-bit I2C-bus LED driver with programmable blink rates |
| 封裝： | PCA9550D<SOT96-1 (SO8)|<<http://www.nxp.com/packages/SOT96-1.html<1<week 5, 2005,;PCA9550D<SOT96-1 (SO8)|<<http://www.nxp.com/packages/SOT96-1.html<1<week 5, 2005,; |
| 文件頁數(shù)： | 4/26頁 |
| 文件大?。?/td> | 150K |
| 代理商： | PCA9550D |
PCA9550_5
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 05 — 13 October 2008
12 of 26
NXP Semiconductors
PCA9550
2-bit I2C-bus LED driver with programmable blink rates
8.2 Programming example
The following example will show how to set LED0 to blink at 1 Hz at a 50 % duty cycle.
LED1 will be set to blink at 4 Hz and at a 25 % duty cycle.
9.
Limiting values
Table 11.
Programming PCA9550
Program sequence
I2C-bus
START
S
PCA9550 address with A0 = LOW
C0h
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 to PWM0, and set LED1 to blink at PWM1
0Eh
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
=
Table 12.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
Min
Max
Unit
VDD
supply voltage
0.5
+6.0
V
VI/O
voltage on an input/output pin
VSS 0.5
5.5
V
IO(LEDn)
output current on pin LEDn
-
±25
mA
ISS
ground supply current
-
50
mA
Ptot
total power dissipation
-
400
mW
Tstg
storage temperature
65
+150
°C
Tamb
ambient temperature
operating
40
+85
°C
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9550D,112 | 功能描述:LED照明驅(qū)動器 2-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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| PCA9550D,118 | 功能描述:LED照明驅(qū)動器 2-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 |
| PCA9550D112 | 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: |
| PCA9550DP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2-bit I2C LED driver with programmable blink rates |
| PCA9550DP,118 | 功能描述:LED照明驅(qū)動器 2-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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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