參數(shù)資料
型號(hào)： PCA9531D
廠商： NXP Semiconductors N.V.
元件分類： LED驅(qū)動(dòng)器
英文描述： 8-bit I2C-bus LED dimmer
封裝： PCA9531BS<SOT629-1 (HVQFN16)|<<http://www.nxp.com/packages/SOT629-1.html<1<Always Pb-free,;PCA9531D<SOT109-1 (SO16)|<<http://www.nxp.com/packages/SOT109-1.html<1<we
文件頁(yè)數(shù)： 24/27頁(yè)
文件大?。?/td> 156K
代理商： PCA9531D
PCA9531_6
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 06 — 19 February 2009
6 of 27
NXP Semiconductors
PCA9531
8-bit I2C-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.
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 signicant bits are affected by the AI ag. Unused bits must be
programmed with zeroes.
6.2.1 Control register denition
6.3 Register descriptions
6.3.1 INPUT - Input register
The INPUT register reects the state of the device pins. Writes to this register will be
acknowledged but will have no effect.
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 VDD.
Reset state: 00h
Fig 6.
Control register
002aac506
0
AI
0
B2
B1
B0
register address
Auto-Increment flag
Table 3.
Register summary
B2
B1
B0
Symbol
Access
Description
0
INPUT
read only
input register
0
1
PSC0
read/write
frequency prescaler 0
0
1
0
PWM0
read/write
PWM register 0
0
1
PSC1
read/write
frequency prescaler 1
1
0
PWM1
read/write
PWM register 1
1
0
1
LS0
read/write
LED0 to LED3 selector
1
0
LS1
read/write
LED4 to LED7 selector
Table 4.
INPUT - Input register description
Bit
7
6
5
4
3
2
1
0
Symbol
LED7
LED6
LED5
LED4
LED3
LED2
LED1
LED0
Default
XXXXXXXX
相關(guān)PDF資料
PDF描述
PCA9531PW 8-bit I2C-bus LED dimmer
PCA9532BS 16-bit I2C-bus LED dimmer
PCA9532D 16-bit I2C-bus LED dimmer
PCA9532PW 16-bit I2C-bus LED dimmer
PCA9533D 4-bit I2C-bus LED dimmer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9531D,112 功能描述:LED照明驅(qū)動(dòng)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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
PCA9531D,118 功能描述:LED照明驅(qū)動(dòng)器 8-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
PCA9531D112 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:
PCA9531PW 功能描述:LED照明驅(qū)動(dòng)器 8-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
PCA9531PW,112 功能描述:LED照明驅(qū)動(dòng)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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
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