- 您現在的位置：買賣IC網 > PDF目錄382379 > PCA9551 (NXP Semiconductors N.V.) 8-bit I2C LED driver with programmable blink rates PDF資料下載
參數資料
| 型號： | PCA9551 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | LED驅動器 |
| 英文描述： | 8-bit I2C LED driver with programmable blink rates |
| 中文描述： | 8位I2C LED與可編程閃爍率司機 |
| 文件頁數： | 2/21頁 |
| 文件大?。?/td> | 161K |
| 代理商： | PCA9551 |
Philips Semiconductors
Product data sheet
PCA9551
8-bit I
2
C LED driver with
programmable blink rates
2
2004 Oct 01
FEATURES
8 LED drivers (on, off, flashing at a programmable rate)
2 selectable, fully programmable blink rates (frequency and duty
cycle) between 0.148 Hz and 38 Hz (6.74 and 0.026 seconds)
Input/outputs not used as LED drivers can be used as regular
GPIOs
Internal oscillator requires no external components
I
2
C-bus interface logic compatible with SMBus
Internal power-on reset
Noise filter on SCL/SDA inputs
Active-LOW reset input
8 open drain outputs directly drive LEDs to 25 mA
Edge rate control on outputs
No glitch on power-up
Supports hot insertion
Low stand-by current
Operating power supply voltage range of 2.3 V to 5.5 V
0 to 400 kHz clock frequency
ESD protection exceeds 2000 V HBM per JESD22-A114,
150 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
Latch-up testing is done to JESDEC Standard JESD78 which
exceeds 100 mA
Packages offered: SO16, TSSOP16, HVQFN16
DESCRIPTION
The PCA9551 LED Blinker blinks LEDs in I
2
C-bus and SMBus
applications where it is necessary to limit bus traffic or free up the
I
2
C Master’s (MCU, MPU, DSP, chipset, 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 traffic on
the I
2
C-bus and uses up one of the master’s timers. The PCA9551
LED Blinker instead requires only the initial set up command to
program BLINK RATE 1 and BLINK RATE 2 (i.e., 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 100 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 PCA9551 allow eight devices
to operate on the same bus.
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
ORDER CODE
TOPSIDE MARK
DRAWING NUMBER
16-pin plastic SO
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
PCA9551D
PCA9551D
SOT109-1
16-pin plastic TSSOP
PCA9551PW
PCA9551
SOT403-1
16-pin plastic HVQFN
Standard packing quantities and other packaging data are available at www.standardproducts.philips.com/packaging.
I
2
C is a trademark of Philips Semiconductors Corporation.
PCA9551BS
9551
SOT629-1
相關PDF資料 |
PDF描述 |
|---|---|
| PCA9552 | GT 10C 10#16 SKT RECP BOX RM |
| PCA9554 | 8-bit I2C and SMBus I/O port with interrupt |
| PCA9554A | 8-bit I2C and SMBus I/O port with interrupt |
| PCA9554AN | 8-bit I2C and SMBus I/O port with interrupt |
| PCA9554N | 8-bit I2C and SMBus I/O port with interrupt |
相關代理商/技術參數 |
參數描述 |
|---|---|
| PCA9551BS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit I2C-bus LED driver with programmable blink rates |
| PCA9551BS,118 | 功能描述:LED照明驅動器 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| PCA9551BS118 | 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: |
| PCA9551BSHP | 功能描述:LED照明驅動器 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 |
| PCA9551BS-T | 功能描述:LED照明驅動器 8-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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
發布緊急采購，3分鐘左右您將得到回復。