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IMP1810 参数 Datasheet PDF下载

IMP1810图片预览
型号: IMP1810
PDF下载: 下载PDF文件 查看货源
内容描述: 低功耗,, 5V - Ressett- Acttiive低,,公开赛 - Draiin Outtputt [Low Power,, 5V - Ressett- Acttiive LOW,, Open--Draiin Outtputt]
分类和应用:
文件页数/大小: 36 页 / 1778 K
品牌: A1PROS [ A1 PROS CO., LTD. ]
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IMP1815  
Application Information  
Operation – Power Monitor  
Output Conditions  
The IMP1815 detects out-of-tolerance power supply conditions. It The IMP1815 active LOW reset signal is valid as long as VCC  
resets a processor during power-up, power-down and issues a remains above 1.2V. The RESET output on the IMP1815 uses a  
reset to the system processor when the monitored power supply push-pull drive stage that can maintain a valid output below 1.2V.  
voltage is below the reset threshold. When an out-of-tolerance VCC To sink current with V below 1.2V, a resistor can be connected  
CC  
voltage is detected, the RESET signal is asserted. On power-up, from the reset pin (RESET) to Ground (see Figure 1). This  
RESET is kept active (LOW) for approximately 150ms after the configuration will give a valid value on the RESET output with  
power supply voltage has reached the selected tolerance. This  
V
CC  
approaching 0V. During both power up and down, this con-  
allows the power supply and microprocessor to stabilize before figuration will draw current when RESET is in the high state. A  
RESET is released.  
value of 100kshould be adequate to maintain a valid condition.  
tR  
VCCTP (MAX)  
VCCTP  
VCCTP (MIN)  
IMP1815  
Microprocessor  
RESET  
VCC  
tRPU  
RESET  
VOH  
100k  
RESET  
1815_07.eps  
1815_06.eps  
Figure 2. Timing Diagram: Power-Up  
Figure 1. RESET Valid to 0V VCC  
tF  
VCC  
VCCTP (MAX)  
VCCTP  
VCCTP (MIN)  
tRPD  
RESET  
VOL  
1815_08.eps  
Figure 3. Timing Diagram: Power-Down  
408-432-9100/www.impweb.com  
© 1999 IMP, Inc.  
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