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參數(shù)資料
| 型號： | PCA9530DP |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | 2-bit I2C-bus LED dimmer |
| 封裝： | PCA9530D<SOT96-1 (SO8)|<<http://www.nxp.com/packages/SOT96-1.html<1<week 5, 2005,;PCA9530D<SOT96-1 (SO8)|<<http://www.nxp.com/packages/SOT96-1.html<1<week 5, 2005,; |
| 文件頁數(shù)： | 21/24頁 |
| 文件大?。?/td> | 143K |
| 代理商： | PCA9530DP |
PCA9530_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 26 February 2009
6 of 24
NXP Semiconductors
PCA9530
2-bit I2C-bus LED dimmer
6.3.5 PWM1 - Pulse Width Modulation 1
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 = PWM1 / 256.
6.3.6 LS0 - LED selector
The LS0 LED select register determines the source of the LED data.
00 = output is set high-impedance (LED off; default)
01 = output is set LOW (LED on)
10 = output blinks at PWM0 rate
11 = output blinks at PWM1 rate
6.4 Pins used as GPIOs
LEDn pins not used to control LEDs can be used as General Purpose I/Os (GPIOs).
For use as input, set LEDn 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. LEDn 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 LS0. The output can be pulse-width controlled when PWM0 or
PWM1 are used.
6.5 Power-on reset
When power is applied to VDD, an internal Power-On Reset (POR) holds the PCA9530 in
a reset condition until VDD has reached VPOR. At that point, the reset condition is released
and the PCA9530 registers are initialized to their default states, all the outputs in the
OFF state. Thereafter, VDD must be lowered below 0.2 V to reset the device.
Table 8.
PWM1 - Pulse Width Modulation 1 register description
Bit
7
6
5
4
3
2
1
0
Symbol
PWM1
[7]
PWM1
[6]
PWM1
[5]
PWM1
[4]
PWM1
[3]
PWM1
[2]
PWM1
[1]
PWM1
[0]
Default
10000000
Table 9.
LS0 - LED selector register bit description
Legend: * default value.
Register
Bit
Value
Description
LS0
7:4
1111*
reserved
3:2
00*
LED1 selected
1:0
00*
LED0 selected
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| PCA9532BS | 16-bit I2C-bus LED dimmer |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9530DP,118 | 功能描述:LED照明驅(qū)動器 I2C LED DIMMER 2BIT 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 |
| PCA9530D-T | 功能描述:LED照明驅(qū)動器 2-BIT I2C FM OD LED DIM 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 |
| PCA9531 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit I2C-bus LED dimmer |
| PCA9531BS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit I2C LED dimmer |
| PCA9531BS,118 | 功能描述:LED照明驅(qū)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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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