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SMS47GR02 参数 Datasheet PDF下载

SMS47GR02图片预览
型号: SMS47GR02
PDF下载: 下载PDF文件 查看货源
内容描述: 四可编程精密梯级定序和监控器 [Quad Programmable Precision Cascade Sequencer and Supervisory Controller]
分类和应用: 监控
文件页数/大小: 19 页 / 915 K
品牌: SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
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SMS47  
PreliminaryInformation  
PIN DESCRIPTIONS (CONTINUED)  
A1,A2 (6, 7)  
A1 and A2 are the address inputs. When addressing the  
SMS47 configuration registers the address inputs distin-  
guish which one of four possible devices sharing the  
common bus is being addressed.  
SDA(9)  
SDA is the serial data input/output pin. It should be tied to  
VDD_CAP through a pull-up resistor.  
SCL(10)  
SCListheserialclockinput. ItshouldbetiedtoVDD_CAP  
through a pull-up resistor.  
PUP#1, PUP#2, PUP#3 (4, 5, 13)  
These are the power-up permitted (PUP) active low open  
drain outputs. The PUP pins are used when the SMS47 is  
programmed to provide the cascade sequencing of LDOs  
or DC/DC converters (see Figures 1 and 5 for illustra-  
tionsofcascading). Eachdelayisindependentlyenabled  
andprogrammableforitsduration(configurationregister  
7). If all PUP# outputs are enabled the order of events  
would be as follows: V0 above threshold then delay to  
PUP#1turningon;V1abovethresholdthendelaytoPUP#2  
turningon;V2abovethresholdthendelaytoPUP#3turning  
on. The delays are programmable.  
SUMMIT MICROELECTRONICS, Inc.  
2087 1.0 04/11/05  
7