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參數資料
| 型號： | PCA9533 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 4-bit I2C LED dimmer |
| 中文描述： | 4位I2C LED調光 |
| 文件頁數： | 5/18頁 |
| 文件大小： | 133K |
| 代理商： | PCA9533 |
Philips Semiconductors
Product data sheet
PCA9533
4-bit I
2
C LED dimmer
2004 Oct 01
5
PWM1 — PWM REGISTER 1
bit
7
default
1
6
0
5
0
4
0
3
0
2
0
1
0
0
0
The PWM1 register determines the duty cycle of BLINK1. The
outputs are LOW (LED on) when the count is less than the value in
PWM1 and HIGH (LED off) when it is greater. If PWM1 is
programmed with 00h, then the PWM1 output is always HIGH
(LED off).
The duty cycle of BLINK1 is: P256
LS0 — LED SELECTOR
LED3
LED2
LED 1
3
0
LED 0
1
0
bit
7
0
6
0
5
0
4
0
2
0
0
0
default
The LSx LED select registers determine the source of the LED data.
00 = Output is set Hi-Z (LED off – default)
01 = Output is set LOW (LED on)
10 = Output blinks at PWM0 rate
11 = Output blinks at PWM1 rate
PINS USED AS GENERAL PURPOSE I/Os
LED pins not used to control LEDs can be used as general purpose
I/Os.
For use as input: Set LEDx to high-impedance (00) and then read
the pin state via the input register.
For use as output: Connect external pull-up resistor to the pin and
size it according to the DC recommended operating characteristics.
LED output pin is HIGH when the output is programmed as
high-impedance, and LOW when the output is programmed LOW
through the “LED selector” register. The output can be pulse-width
controlled when PWM0 or PWM1 are used.
POWER-ON RESET
When power is applied to V
DD
, an internal Power-On Reset holds
the PCA9533 in a reset condition until V
DD
has reached V
POR
. At
this point, the reset condition is released and the PCA9533 registers
are initialized to their default states, with all outputs in the off state.
Thereafter, V
DD
must be lowered below 0.2 V to reset the device.
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| PCA9533DP01 | 4-bit I2C LED dimmer |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PCA9533D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit I2C LED dimmer |
| PCA9533D/01 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit I2C-bus LED dimmer |
| PCA9533D/01,112 | 功能描述:LED照明驅動器 4-BIT I2C FM OD LED DIM 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 |
| PCA9533D/01,118 | 功能描述:LED照明驅動器 4-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 |
| PCA9533D/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: |
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