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參數(shù)資料
| 型號(hào)： | PCA9553 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | RD-9ASJS ; 9 PIN FEMALE RoHS Compliant: Yes |
| 中文描述： | 4位I2C LED與可編程閃爍率司機(jī) |
| 文件頁(yè)數(shù)： | 5/18頁(yè) |
| 文件大?。?/td> | 130K |
| 代理商： | PCA9553 |
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Philips Semiconductors
Product data sheet
PCA9553
4-bit I
2
C LED driver with programmable blink rates
2004 Oct 01
5
PWM1 — PWM REGISTER 1
bit
7
default
1
The PWM1 register determines the duty cycle of BLINK1. The
outputs are LOW (LED off) when the count is less than the value in
PWM1 and HIGH when it is greater. If PWM1 is programmed with
00h, then the PWM1 output is always LOW.
The duty cycle of BLINK1 is: 256 256
6
0
5
0
4
0
3
0
2
0
1
0
0
0
LS0 — LED SELECTOR
LED3
LED2
LED 1
3
0
LED 0
1
0
bit
7
0
6
1
5
0
4
1
2
1
0
1
default
The LSx LED select registers determine the source of the LED data.
00 = Output is set LOW (LED on)
01 = Output is set Hi-Z (LED off – default)
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 (01) 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 PCA9553 in a reset condition until V
DD
has reached V
POR
. At
this point, the reset condition is released and the PCA9553 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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| PCA9553D/01 | 功能描述:LED照明驅(qū)動(dòng)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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| PCA9553D/01,112 | 功能描述:LED照明驅(qū)動(dòng)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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| PCA9553D/01,118 | 功能描述:LED照明驅(qū)動(dòng)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(fēng)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: |
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