參數(shù)資料
型號(hào)： PCA9532D
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 dimmer
封裝： PCA9532BS<SOT616-1 (HVQFN24)|<<http://www.nxp.com/packages/SOT616-1.html<1<Always Pb-free,;PCA9532D<SOT137-1 (SO24)|<<http://www.nxp.com/packages/SOT137-1.html<1<we
文件頁(yè)數(shù)： 25/29頁(yè)
文件大?。?/td> 164K
代理商： PCA9532D
PCA9532_4
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 17 March 2009
5 of 29
NXP Semiconductors
PCA9532
16-bit I2C-bus LED dimmer
6.
Functional description
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 PCA9532 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 PCA9532, which will be stored in the Control register.
The lowest 4 bits are used as a pointer to determine which register will be accessed.
If the Auto-Increment (AI) ag 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 Auto-Increment ag is set (AI = 1) and a read sequence is initiated, the sequence
must start by reading a register different from the INPUT0 register
(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.
PCA9532 slave address
002aac505
1
0
A2
A1
A0 R/W
fixed
slave address
hardware
selectable
Reset state: 00h
Fig 6.
Control register
002aae523
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
PCA9532D,112 功能描述:LED照明驅(qū)動(dòng)器 I2C LED DIMMER 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
PCA9532D,118 功能描述:LED照明驅(qū)動(dòng)器 16-BIT I2C FM OD LED DIM 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
PCA9532D118 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:
PCA9532PW 功能描述:LED照明驅(qū)動(dòng)器 I2C LED DIMMER 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
PCA9532PW,112 功能描述:LED照明驅(qū)動(dòng)器 I2C LED DIMMER 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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