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Teilenummer | ACE809 |
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Beschreibung | 3-Pin Microprocessor Reset Circuits | |
Hersteller | ACE Technology | |
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Gesamt 6 Seiten ACE809
Technology
3-Pin Microprocessor Reset Circuits
Description
The ACE809 microprocessor supervisory circuits can be used to monitor the power supplies in
microprocessor and digital systems. They provide s reset to the microprocessor during power-up,
power-down and brown-out conditions.
The function of the ACE809 is to monitor the VCC supply voltage, and assert a reset signal whenever this
voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for
240ms after VCC rises above the threshold. The ACE809 has an active-low RESET output. The output of
the ACE809 is guaranteed valid down to VCC =1V. The device is available in a SOT-23-3L package.
The ACE809 is optimized to reject fast transient glitches on the VCC line. Low supply current of 25µA,
(VCC=3.3V) makes these devices suitable for battery powered applications.
Features
• Precision Vcc Monitor for 3.0V,3.3V and 5.0V Supplies
• 140ms Guaranteed Minimum RESET Output Duration
• RESET Output Guaranteed to Vcc=1.0V
• Low 25μA Supply Current.
• Vcc Transient Immunity.
• No External Components.
Application
• Embedded systems
• Computers
• Critical μP Power Supply Monitoring
• Battery Powered equipment
Absolute Maximum Ratings
Parameter
Supply Voltage
Output Voltage
Symbol Max Unit
VCC 5.5 V
RESET -0.3 to (Vcc+0.3) V
Input Current
20 mA
Output Current
IOUT 20 mA
Power Dissipation
PD Internally Limited
Thermal resistance junction to ambient
SOT-23-3
θJA
230 ℃/W
Operating junction temperature range TJ
0 to 125
℃
Storage temperature range
TSTG
-60 to 150 ℃
Note 1: Exceeding these rating could cause damage to the device. All voltages are with respect to Ground. Currents are positive
into, negative out of the specified terminal.
Note 2: Voltage values are with respect to the anode terminal unless otherwise noted.
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VER 1.2 1
ACE809
Technology
3-Pin Microprocessor Reset Circuits
Notes
ACE does not assume any responsibility for use as critical components in life support devices or systems
without the express written approval of the president and general counsel of ACE Electronics Co., LTD.
As sued herein:
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and shoes failure to perform when properly used in
accordance with instructions for use provided in the labeling, can be reasonably expected to result in
a significant injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can
be reasonably expected to cause the failure of the life support device or system, or to affect its safety
or effectiveness.
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ACE Technology Co., LTD.
http://www.ace-ele.com/
VER 1.2 6
6 Page | ||
Seiten | Gesamt 6 Seiten | |
PDF Download | [ ACE809 Schematic.PDF ] |
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