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MIC70 Datasheet(Hoja de datos) 1 Page - Micrel Semiconductor

No. de Pieza. MIC70
Descripción  μP Supervisory Circuits
Descarga  8 Pages
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Fabricante  MICREL [Micrel Semiconductor]
Página de inicio  http://www.micrel.com
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1
The MIC705/MIC706/MIC707/MIC708 are inexpensive
microprocessor supervisory circuits that monitor power
supplies in microprocessor based systems. The circuit
functions include a watchdog timer, microprocessor
reset, power failure warning and a debounced manual
reset input.
The MIC705 and MIC706 offer a watchdog timer
function while the MIC707 and MIC708 have an active
high reset output in addition to the active low reset
output.
Supply voltage monitor levels of 4.65V and 4.4V are
available. The MIC705/MIC707 have a nominal reset
threshold level of 4.65V while the MIC706 and MIC708
have a 4.4V nominal reset threshold level. When the
supply voltage drops below the respective reset
threshold level, RESET is asserted.
1
2
3
4
VCC
GND
PFI
8
7
6
5
WDO
RESET
WDI
PFO
MIC705
MIC706
MR
PFO
1
2
3
4
VCC
GND
PFI
8
7
6
5
RESET
RESET
NC
PFO
MIC707
MIC708
MR
PFO
Top View
N Package - 8 Lead Plastic DIP Package
M Package - 8 Lead Plastic SOIC Package
Part
Package
Temp. Range
MIC70_N
8-Lead PDIP
-40°C to +85°C
MIC70_M
8-Lead SOIC
-40°C to +85°C
· Automotive Systems
· Intelligent Instruments
· Critical Microprocessor Power Monitoring
· Printers
· Computers
· Controllers
· Debounced Manual Reset Input is
TTL/CMOS Compatible
· Reset Pulse Width, 200ms
· Watchdog Timer, 1.6s (MIC705/MIC706)
· 4.4V or 4.65V Precision Voltage Monitor
· Early Power Fail Warning or Low Battery
Detect
VCC
RESET
µP
RESET
VCC
MIC705
MIC706
+5V (Regulated)
MR
WDI
I/O Line
PFO
Interrupt
PFI
DC Voltage
(Unregulated)
Manual
Reset
WDO
NMI
Typical Operating Circuit
Features
Description
Pin Configuration
Ordering Information
Typical Applications
MIC705/6/7/8 µP Supervisory Circuits
MIC705/6/7/8
µP Supervisory Circuits




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