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參數(shù)資料
| 型號： | PCA9552BS |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | LED驅(qū)動器 |
| 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)： | 24/28頁 |
| 文件大?。?/td> | 159K |
| 代理商： | PCA9552BS |
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PCA9552_5
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 05 — 9 March 2006
5 of 28
Philips Semiconductors
PCA9552
16-bit I2C-bus LED driver with programmable blink rates
6.
Functional description
Refer to Figure 1 “Block diagram of PCA9552”.
6.1 Device address
Following a START condition, the bus master must output the address of the slave it is
accessing. The address of the PCA9552 is shown in Figure 5. To conserve power, no
internal pull-up resistors are incorporated on the hardware selectable address pins and
they must be pulled HIGH or LOW.
The last bit of the address byte denes the operation to be performed. When set to logic 1
a read is selected, while a logic 0 selects a write operation.
6.2 Control Register
Following the successful acknowledgement of the slave address, the bus master will send
a byte to the PCA9552, which will be stored in the Control Register. This register can be
read and written via the I2C-bus.
The lowest 3 bits are used as a pointer to determine which register will be accessed.
If the Auto-Increment ag (AI) is set, the four low order bits of the Control Register are
automatically incremented after a read or write. This allows the user to program the
registers sequentially. The contents of these bits will rollover to ‘0000’ after the last
register is accessed.
When the Auto-Increment ag is set (AI = 1) and a read sequence is initiated, the
sequence must start by reading a register different from ‘0' (B3 B2 B1 B0
≠ 0000).
Only the 4 least signicant bits are affected by the AI ag. Unused bits must be
programmed with zeroes.
Fig 5.
PCA9552 address
002aac169
1
0
A2
A1
A0 R/W
fixed
slave address
programmable
Reset state: 00h
Fig 6.
Control Register
002aac170
0
AI
B3
B2
B1
B0
register address
Auto-Increment flag
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9552BS,118 | 功能描述:LED照明驅(qū)動器 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 |
| PCA9552D | 功能描述:LED照明驅(qū)動器 I2C LED BLINKR 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 |
| PCA9552D,112 | 功能描述:LED照明驅(qū)動器 I2C LED BLINKR 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 |
| PCA9552D,118 | 功能描述:LED照明驅(qū)動器 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 |
| PCA9552PW | 功能描述:LED照明驅(qū)動器 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 |
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