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.
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[ 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 |
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