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PDF MIC810 Data sheet ( Hoja de datos )
| Número de pieza | MIC810 | |
| Descripción | Microprocessor Reset Circuits | |
| Fabricantes | Micrel Semiconductor | |
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MIC809/810
Microprocessor Reset Circuits
General Description
The MIC809 and MIC810 are inexpensive microprocessor
supervisory circuits that monitor power supplies in
microprocessor-based systems.
The function of these devices is to assert a reset if the
power supply drops below a designated reset threshold
level. Several different reset threshold levels are available
to accommodate 3V, 3.3V or 5V powered systems.
The MIC809 has an active-low /RESET output, while the
MIC810 offers an active-high RESET output. The reset
output is guaranteed to remain asserted for a minimum of
140ms after VCC has risen above the designated reset
threshold level. Having a push-pull output stage, the
MIC809/810 does not require a pull-up resistor at the
output. The MIC809/810 comes in a 3-pin SOT-23 and
SC-70 package.
The MIC809 is also available with a shorter reset timeout
(30ms, minimum).
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
Features
• Precision voltage monitor for 3V, 3.3V, or 5V power
supplies
• /RESET remains valid with VCC as low as 1.4V for
SOT-23 packaged part
• /RESET remains valid with VCC as low as 1V for
SC70-packaged part
• Typically less than 15μA supply current for SOT-23
packaged part
• 5µA (typical) supply current for SC70-packaged part
• 140ms (minimum) reset pulse widths available
• Available in 3-pin SOT-23 and SC-70 package
Applications
• Portable equipment
• Intelligent instruments
• Critical microprocessor power monitoring
• Printers/computers
• Controllers
Typical Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
July 6, 2015
Revision 3.0
1 page  
Micrel, Inc.
Electrical Characteristics(6) (Continued)
For typical values, VCC = 5V for MIC8_L/M/J, VCC = 3.3V for MIC8_S/T, VCC = 3V for MIC8_R; TA = 25°C.
Bold values indicate –40°C to ≤ TA ≤ +85°C; unless otherwise noted.
Symbol Parameter
Condition
Min.
VCC = VTH (minimum), ISINK = 3.2mA,
MIC809L/M/J
VCC = VTH (minimum)., ISINK = 1.2mA,
MIC809R/S/T
VOL
/RESET Output Voltage (MIC809)
VCC >1.4V, ISINK = 50µA,
TA = 0°C to +70°C
VCC = 1V, ISINK = 50µA,
TA = –40°C to +85°C (SC-70)
VCC >1.6V, ISINK = 50µA,
TA = –40°C to +85°C
VOH
RESET Output Voltage (MIC810)
1.8V < VCC < VTH (minimum),
ISOURCE = 150µA
0.8 × VCC
ISINK = 3.2mA, MIC810L/M/J
VOL RESET Output Voltage (MIC810)
ISINK = 1.2mA, MIC810R/S/T
Typ.
MIC809/810
Max.
0.4
Units
0.3
0.3 V
0.3
0.3
V
0.4
V
0.3
Timing Diagram
Reset Timing Diagram
July 6, 2015
5 Revision 3.0
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet MIC810.PDF ] | |
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