參數(shù)資料
型號: PCA9553D
廠商: NXP Semiconductors N.V.
元件分類: LED驅(qū)動(dòng)器
英文描述: 4-bit I2C-bus LED driver with programmable blink rates
封裝: PCA9553D/01<SOT96-1 (SO8)|<<http://www.nxp.com/packages/SOT96-1.html<1<week 5, 2005,;PCA9553D/01<SOT96-1 (SO8)|<<http://www.nxp.com/packages/SOT96-1.html<1<week 5,
文件頁數(shù): 22/26頁
文件大小: 146K
代理商: PCA9553D
PCA9553_6
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 06 — 29 December 2008
5 of 26
NXP Semiconductors
PCA9553
4-bit I2C-bus LED driver with programmable blink rates
7.
Functional description
7.1 Device address
Following a START condition the bus master must output the address of the slave it is
accessing. The address of the PCA9553/01 is shown in Figure 5 and PCA9553/02 in
PCA9553TK uses the version /01 address.
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.
7.2 Control register
Following the successful acknowledgement of the slave address, the bus master will send
a byte to the PCA9553 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 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’ (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.
Fig 5.
PCA9553/01 slave address
Fig 6.
PCA9553/02 slave address
R/W
002aad742
1
0
1
0
slave address
R/W
002aad743
1
0
1
slave address
Reset state: 00h
Fig 7.
Control register
B0
002aad744
0
AI
0
B2
B1
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
PCA9553D/01 功能描述:LED照明驅(qū)動(dòng)器 LED DRVR 4BIT I2C 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
PCA9553D/01,112 功能描述:LED照明驅(qū)動(dòng)器 LED DRVR 4BIT I2C 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
PCA9553D/01,118 功能描述:LED照明驅(qū)動(dòng)器 4-BIT I2C FM OD LED BLK 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
PCA9553D/01112 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:
PCA9553D/02 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit I2C-bus LED driver with programmable blink rates