收藏本站
NXP Semiconductors
PCA9531
8-bit I 2 C-bus LED dimmer
6.2 Control register
Following the successful acknowledgement of the slave address, the bus master will send
a byte to the PCA9531, which will be stored in the Control register.
0
0
0
AI
0
B2
B1
B0
Auto-Increment flag
register address
002aac506
Reset state: 00h
Fig 6.
Control register
The lowest 3 bits are used as a pointer to determine which register will be accessed.
If the Auto-Increment ?ag is set, the three 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 ‘000’ 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 Input register (B2 B1 B0 ≠ 0 0 0).
Only the 3 least signi?cant bits are affected by the AI ?ag. Unused bits must be
programmed with zeroes.
6.2.1 Control register de?nition
Table 3.
Register summary
B2
0
0
0
0
1
1
1
B1
0
0
1
1
0
0
1
B0
0
1
0
1
0
1
0
Symbol
INPUT
PSC0
PWM0
PSC1
PWM1
LS0
LS1
Access
read only
read/write
read/write
read/write
read/write
read/write
read/write
Description
input register
frequency prescaler 0
PWM register 0
frequency prescaler 1
PWM register 1
LED0 to LED3 selector
LED4 to LED7 selector
6.3 Register descriptions
6.3.1 INPUT - Input register
The INPUT register re?ects the state of the device pins. Writes to this register will be
acknowledged but will have no effect.
Table 4.
INPUT - Input register description
Bit
Symbol
Default
7
LED7
X
6
LED6
X
5
LED5
X
4
LED4
X
3
LED3
X
2
LED2
X
1
LED1
X
0
LED0
X
Remark: The default value ‘X’ is determined by the externally applied logic level (normally
logic 1) when used for directly driving LED with pull-up to V DD .
PCA9531_6
? NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 06 — 19 February 2009
6 of 27
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
PCA9532D,118 IC LED DRIVER RGB 24-SOIC
PCA9533DP/01,118 IC LED DRIVER RGB 8-TSSOP
PCA9550DP,118 IC LED DRIVER BLINKER 8-TSSOP
PCA9551BS,118 IC LED DRIVER BLINKER 16-HVQFN
PCA9552D,118 IC LED DRIVER BLINKER 24-SOIC
PCA9553DP/01,118 IC LED DRIVER LINEAR 8-TSSOP
PCA9624PW,118 IC LED DRIVER RGBA 24-TSSOP
PCA9625D/S911,518 IC LED DRIVER RGBA 32-SOIC
相关代理商/技术参数
PCA9532 制造商:NXP Semiconductors 功能描述:IC ((NW))
PCA9532BS 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:16-bit I2C-bus LED dimmer
PCA9532BS,118 功能描述:LED照明驱动器 I2C LED DIMMER 16BIT RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
PCA9532BS-T 功能描述:LED照明驱动器 I2C LED DIMMER 16BIT RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
PCA9532D 功能描述:LED照明驱动器 I2C LED DIMMER 16BIT RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
PCA9532D,112 功能描述:LED照明驱动器 I2C LED DIMMER 16BIT RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
PCA9532D,118 功能描述:LED照明驱动器 16-BIT I2C FM OD LED DIM RST RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体: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: