CXDR7591微处理器监控电路降低了监控电源和监视微处理器活动所需的组件的复杂性和数量。与单独的集成电路或分立元件相比，它显著提高了系统的可靠性和准确性。CXDR7591提供电源监控电路，在通电、断电和断电时产生复位输出。复位输出在VCC低至1V时保持工作。还提供独立的看门狗监控电路。如果在1.6秒内未切换看门狗输入，则会激活此功能。此外，还有一个1.25V阈值检测器，用于电源故障警告、电池电量不足检测或监测附加电源。还包括一个有效的低手动复位输入（/MR）。
[ CXDR7591 ]
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产品概述 返回TOP
The CXDR7591 microprocessor supervisory circuit reduces the complexity and number of components required to monitor power-supply and monitor microprocessor activity. It significantly improves system reliability and accuracy compared to separate ICs or discrete components.
The CXDR7591 provides power-supply monitoring circuitry that generates a reset output during power-up, power-down and brownout conditions. The reset output remains operational with VCC as low as 1V. Independent watchdog monitoring circuitry is also provided. This is activated if the watchdog input has not been toggled within 1.6 seconds.
In addition, there is a 1.25V threshold detector for power-fail warning, low-battery detection, or monitoring an additional power supply. An active-low manual-reset input (/MR) is also included.
The CXDR7591 is available in Green SOIC-8 package. The CXDR7591-S is available in both Green SOIC-8 and MSOP-8 packages. They operate over an ambient temperature range of -40℃ to +85℃.
产品特点 返回TOP
• Precision Supply-Voltage Monitor
4.65V for CXDR7591-L
4.40V for CXDR7591-M
4.0V for CXDR7591-J
3.08V for CXDR7591-T
2.93V for CXDR7591-S
2.63V for CXDR7591-R
• Guaranteed /RESET Valid at VCC = 1V
• 200ms Reset Pulse Width
• Debounced TTL/CMOS-Compatible
Manual-Reset Input
• Independent Watchdog Timer (1.6sec) Timeout
• Voltage Monitor for Power-Fail or Low-Battery Warning
• -40℃ to +85℃ Operating Temperature Range
• CXDR7591 is Available in Green SOIC-8 Package
• CXDR7591-S is Available in both Green SOIC-8 and MSOP-8 Packages
应用范围 返回TOP
Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical μP Power Monitoring
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产品封装图 返回TOP
电路原理图 返回TOP
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微处理器复位芯片 |
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|
Product |
Manual Reset |
VCC(Min) (V) |
VCC(Max) (V) |
Supply Current(μA) |
Reset Voltage Threshold (V) |
VCC to RESET/RESET Delay (μs) |
Reset Active Timeout Period (ms) |
Package |
|
Y |
1 |
5.5 |
50 |
4.65,4.4,4.00, 3.08,2.93,2.63 |
200 |
SOIC-8 MSOP-8 |
||
|
Y |
1 |
5.5 |
20 |
4.65,4.4,4.00, 3.08,2.93,2.63 |
200 |
SOIC-8 |
||
|
N |
1 |
5.5 |
3 |
2.93,2.63,2.32,1.63 |
80 |
Programmable |
SOT23-5 |
|
|
N |
1 |
5.5 |
3 |
2.93,2.63,2.32,1.63 |
80 |
Programmable |
SC70-4(R) SOT-143 |
|
|
N |
1 |
5.5 |
13 |
4.63,4.38,4.00,3.08 2.93,2.63,2.32,1.63 |
20 |
240 |
SOT-23-3 SOT-23 |
|
|
N |
1 |
5.5 |
3 |
2.93,2.63,2.32,1.63 |
80 |
Programmable |
SOT-23-5 |
|
|
N |
1 |
5.5 |
13 |
4.63,4.38,4.00,3.08 ,2.93,2.63,2.32,1.63 |
20 |
240 |
SOT-23-3 SOT-23 |
|
|
N |
1 |
5.5 |
13 |
4.63,4.38,4.00,3.08, 2.93,2.63,2.32,1.63 |
20 |
240 |
SOT-23-3 SOT-23 |
|
|
Y |
1 |
5.5 |
13 |
4.63,4.38,4.00,3.08, 2.93,2.63,2.32,1.63 |
20 |
240 |
SOT-143 SOT23-5 |
|
|
Y |
1 |
5.5 |
13 |
4.63,4.38,4.00,3.08 ,2.93,2.63,2.32 |
20 |
240 |
SOT-143 SOT23-5 |
|
◀ 上一篇:CXDR7590经济高效的系统监控集成电路数字和混合信号系统中监控VCC并在系统电源超出工作范围时提供警告信号必要时向主机处理器提供重置信号
下一篇▶:200毫秒重置脉冲宽度CXDR7592手动复位输入电源故障或电池电量低警告的电压监视器双重设输出25V阈值检测器电源故障警告电池电量不足检测或监测附加电源
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