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參數(shù)資料
| 型號(hào)： | PCA9552PW |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | LED驅(qū)動(dòng)器 |
| 英文描述： | 16-bit I2C-bus LED driver with programmable blink rates |
| 封裝： | PCA9552BS<SOT616-1 (HVQFN24)|<<http://www.nxp.com/packages/SOT616-1.html<1<Always Pb-free,;PCA9552D<SOT137-1 (SO24)|<<http://www.nxp.com/packages/SOT137-1.html<1<we |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 159K |
| 代理商： | PCA9552PW |
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1.
General description
The PCA9552 LED blinker blinks LEDs in I2C-bus and SMBus applications where it is
necessary to limit bus trafc or free up the I2C-bus master's (MCU, MPU, DSP, chip set,
etc.) timer. The uniqueness of this device is the internal oscillator with two programmable
blink rates. To blink LEDs using normal I/O expanders like the PCF8574 or PCA9554, the
bus master must send repeated commands to turn the LED on and off. This greatly
increases the amount of trafc on the I2C-bus and uses up one of the master's timers. The
PCA9552 LED blinker instead requires only the initial setup command to program
BLINK RATE 1 and BLINK RATE 2 (that is, the frequency and duty cycle) for each
individual output. From then on, only one command from the bus master is required to
turn each individual open-drain output on, off, or to cycle at BLINK RATE 1 or
BLINK RATE 2. Maximum output sink current is 25 mA per bit and 200 mA per package.
Any bits not used for controlling the LEDs can be used for General Purpose Parallel
Input/Output (GPIO) expansion.
The active LOW hardware reset pin (RESET) and Power-On Reset (POR) initializes the
registers to their default state, all zeroes, causing the bits to be set HIGH (LED off).
Three hardware address pins on the PCA9552 allow eight devices to operate on the same
bus.
2.
Features
s 16 LED drivers (on, off, ashing at a programmable rate)
s 2 selectable, fully programmable blink rates (frequency and duty cycle) between
0.172 Hz and 44 Hz (5.82 seconds and 0.023 seconds)
s Input/outputs not used as LED drivers can be used as regular GPIOs
s Internal oscillator requires no external components
s I2C-bus interface logic compatible with SMBus
s Internal power-on reset
s Noise lter on SCL/SDA inputs
s Active LOW reset input
s 16 open-drain outputs directly drive LEDs to 25 mA
s Edge rate control on outputs
s No glitch on power-up
s Supports hot insertion
s Low standby current
s Operating power supply voltage range of 2.3 V to 5.5 V
s 0 Hz to 400 kHz clock frequency
PCA9552
16-bit I2C-bus LED driver with programmable blink rates
Rev. 05 — 9 March 2006
Product data sheet
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA9553D | 4-bit I2C-bus LED driver with programmable blink rates |
| PCB25 | POWER CONNECTOR |
| PCF8578T | LCD row-column driver for dot matrix graphic displays |
| PCI-36RS-SB-L | STRAIGHT TELECOM AND DATACOM CONNECTOR |
| PCI-36SS-SB-N | STRAIGHT TELECOM AND DATACOM CONNECTOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9552PW,112 | 功能描述:LED照明驅(qū)動(dòng)器 I2C LED BLNKER 16BIT 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 |
| PCA9552PW,118 | 功能描述:LED照明驅(qū)動(dòng)器 16-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 |
| PCA9552PW118 | 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: |
| PCA9553 | 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 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit I2C LED driver with programmable blink rates |
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