參數(shù)資料
型號(hào)： PCA9550D
廠商： NXP Semiconductors N.V.
元件分類： LED驅(qū)動(dòng)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(yè)數(shù)： 23/26頁(yè)
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
6 of 26
NXP Semiconductors
PCA9550
2-bit I2C-bus LED driver with programmable blink rates
6.3.4 PSC1 - Frequency Prescaler 1
PSC1 is used to program the period of the PWM output.
The period of BLINK1 = (PSC1 + 1) / 44.
6.3.5 PWM1 - Pulse Width Modulation 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 = (256
PWM1) / 256.
6.3.6 LS0 - LED selector
The LS0 LED select register determines the source of the LED data.
00 = output is set LOW (LED on)
01 = output is set high-impedance (LED off; default)
10 = output blinks at PWM0 rate
11 = output blinks at PWM1 rate
Table 8.
PSC1 - Frequency Prescaler 1 register description
Bit
7
6
5
4
3
2
1
0
Symbol
PSC1[7]
PSC1[6]
PSC1[5]
PSC1[4]
PSC1[3]
PSC1[2]
PSC1[1]
PSC1[0]
Default
11111111
Table 9.
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 10.
LS0 - LED selector register description
Bit
7
6
5
4
3
2
1
0
Symbol
LS0[7:4]
LED1
LED0
Default
11110101
相關(guān)PDF資料
PDF描述
PCA9550DP 2-bit I2C-bus LED driver with programmable blink rates
PCA9551BS 8-bit I2C-bus LED driver with programmable blink rates
PCA9551D 8-bit I2C-bus LED driver with programmable blink rates
PCA9551PW 8-bit I2C-bus LED driver with programmable blink rates
PCA9552BS 16-bit I2C-bus LED driver with programmable blink rates
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(dòng)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(dòng)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(dòng)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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