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PDF MIC707 Data sheet ( Hoja de datos )
| Número de pieza | MIC707 | |
| Descripción | (MIC705 - MIC708) Supervisory Circuits | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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MIC705/6/7/8 µP Supervisory Circuits
MIC705/6/7/8
µP Supervisory Circuits
Description
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.
Pin Configuration
Top View
MR 1
VCC 2
GND 3
PFI 4
MIC705
MIC706
8 WDO
7 RESET
6 WDI
5 PFO
The MIC705 and MIC706 offer a watchdog timer
function while the MIC707 and MIC708 have an active
N Package - 8 Lead Plastic DIP Package
M Package - 8 Lead Plastic SOIC Package
high reset output in addition to the active low reset
output.
Supply voltage monitor levels of 4.65V and 4.4V are
MR 1
VCC 2
GND 3
MIC707
MIC708
8 RESET
7 RESET
6 NC
available. The MIC705/MIC707 have a nominal reset
PFI 4
5 PFO
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.
Features
·DataSheDeet4bUou.cnocmed Manual Reset Input is
TTL/CMOS Compatible
Typical Applications
· Automotive Systems
· Intelligent Instruments
· Critical Microprocessor Power Monitoring
· Printers
· Computers
· Controllers
· 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
Typical Operating Circuit
Ordering Information
Part
MIC70_N
MIC70_M
Package
8-Lead PDIP
8-Lead SOIC
Temp. Range
-40°C to +85°C
-40°C to +85°C
Manual
Reset
DC Voltage
(Unregulated)
+5V (Regulated)
VCC
MR RESET
MIC705
MIC706
WDI
PFI
WDO
PFO
VCC
RESET
µP
I/O Line
NMI
Interrupt
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MIC705/6/7/8 µP Supervisory Circuits
Block Diagram
MR (1)
VCC
250¥A
VCC (2)
4.65V*
+
-
et4U.com
WDI (6)
RESET
GENERATOR
WATCHDOG
TIMER
RESET (7)
WDO (8)
PFI (4)
1.25V
+
-
PFO (5)
* 4.4V for MIC706
Figure 1. MIC705/MIC706 Block Diagram
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MR (1)
VCC
250µA
VCC (2)
4.65V*
+
-
RESET
GENERATOR
RESET (8)
RESET (7)
PFI (4)
1.25V
+
-
* 4.4V for MIC708
Figure 2. MIC707/MIC708 Block Diagram
PFO (5)
5
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5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MIC707.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MIC70 | P Supervisory Circuits | Micrel Semiconductor |
| MIC705 | (MIC705 - MIC708) Supervisory Circuits | Micrel Semiconductor |
| MIC706 | (MIC705 - MIC708) Supervisory Circuits | Micrel Semiconductor |
| MIC706P | P Supervisory Circuits | Micrel Semiconductor |
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