NXP Semiconductors
START
PCA9550
2-bit I 2 C-bus LED driver with programmable blink rates
ACK or read cycle
SCL
SDA
30 %
t rst
RESET
50 %
t rec(rst)
50 %
t w(rst)
50 %
t rst
LEDn
50 %
LED off
002aac193
Fig 19. De?nition of RESET timing
SDA
t BUF
t r
t f
t HD;STA
t SP
t LOW
SCL
t HD;STA
t SU;STA
t SU;STO
P
S
t HD;DAT
t HIGH
t SU;DAT
Sr
P
002aaa986
Fig 20. De?nition of timing
PCA9550_5
? NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 05 — 13 October 2008
16 of 26
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相关代理商/技术参数
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PCA9551BS,118 功能描述:LED照明驱动器 8-BIT I2C FM OD LED 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
PCA9551BS118 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: