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IMP1232LPS-2 参数 Datasheet PDF下载

IMP1232LPS-2图片预览
型号: IMP1232LPS-2
PDF下载: 下载PDF文件 查看货源
内容描述: 5V微处理器电源Supplly Moniittor和Ressett Ciircuiitt [5V μP Power Supplly Moniittor and Ressett Ciircuiitt]
分类和应用: 电源电路电源管理电路微处理器
文件页数/大小: 36 页 / 1778 K
品牌: A1PROS [ A1 PROS CO., LTD. ]
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IMP1233M  
Application Information  
Operation – Power Monitor  
The IMP1233M detects out-of-tolerance power supply conditions.  
It resets a processor during power-up and issues a reset to the  
system processor when the monitored power supply voltage  
is below the reset threshold (power-down). When an out-of-  
tolerance VCC voltage is detected, the RESET signal is asserted. On  
power-up, RESET is kept active (LOW) for approximately 350ms  
after the power supply voltage has reached the selected tolerance.  
This allows the power supply and microprocessor to stabilize  
before RESET is released.  
tR  
VHTL  
VCCTP  
VLTL  
VCC  
tRPU  
VOH  
RESET  
1233M_05.eps  
Figure 1. Timing Diagram: Power-Up  
tF  
VCC  
VHTL  
VCCTP  
VLTL  
tRPD  
RESET  
VOL  
1233M_06.eps  
Figure 2. Timing Diagram: Power-Down  
408-432-9100/www.impweb.com  
© 1999 IMP, Inc.  
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