mic706-ny Micrel Semiconductor, mic706-ny Datasheet

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mic706-ny

Manufacturer Part Number
mic706-ny
Description
Mic705, Mic706, Mic707, And Mic708 ?p Supervisory Circuits
Manufacturer
Micrel Semiconductor
Datasheet
General Description
The MIC705, MIC706, MIC707, and MIC708 are inexpensive
mircoprocessor supervisory circuit that monitors power sup-
plies in microprocessor based systems. The circuit functions
include a watchdog timer, microprocessor reset, backup
battery switchover, 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 and MIC707 have a nominal reset threshold level
of 4.65V while the MIC706 and MIC708 have a 4.4V nominal
threshold level. When the supply voltage drops below the
respective reset threshold level, /RESET is asserted.
Typical Application
January 2006
MIC705/06/07/08
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
(Unregulated)
DC Voltage
Manual
Reset
Ordering Information
Standard
MIC70_N
MIC70_M
MR
PFI
MIC705
MIC706
V CC
1
Part Number
RESET
Features
• Debounced manual reset input is TTL/CMOS
• Watchdog timer, 1.6s (MIC705/706)
• 4.65V or 4.40V Precision Voltage Monitor
• Early power fail warning or low battery detect
Applications
• Automotive systems
• Intelligent systems
• Critical microprocessor power monitoring
• Battery powered computers
• Computers
• Controllers
WDO
+5V (Regulated)
WDI
PFO
Compatible
Pb-Free
MIC70_NY
MIC70_MY
I/O Line
MIC705/706/707/708
RESET
NMI
Interrupt
µP Supervisory Circuit
V CC
µP
Temperature Range
–40ºC to +85ºC
–40ºC to +85ºC
MIC705/06/07/08
8-Pin SOIC
8-Pin PDIP
Package
Micrel, Inc.

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mic706-ny Summary of contents

Page 1

... Supply voltage monitor levels of 4.65V and 4.4V are available. The MIC705 and MIC707 have a nominal reset threshold level of 4.65V while the MIC706 and MIC708 have a 4.4V nominal threshold level. When the supply voltage drops below the respective reset threshold level, /RESET is asserted. ...

Page 2

... MIC707/ N/A N N/A N/A 8 MIC705/06/07/ WDO RESET MIC705 CC MIC706 GND 3 6 WDI PFO PFI 4 5 PFO RESET V 2 MIC707 7 RESET CC MIC708 GND PFI 4 5 PFO PFO 8-Pin PDIP Package 8-Pin SOIC Package ...

Page 3

... Operating Ratings (1) Operating Temperature Range MIC70_N ................................................ –40°C to +85°C MIC70_M ................................................ –40°C to +85°C + 0.3V) OUT Power Dissipation (PDIP) ........................................ 475mW Power Dissipation (SOP) ......................................... 400mW (3) = 4.5V to 5.5V for MIC706/08 Operating Temperature Range, bold values indicate A = 80µA = 3.2mA = 50µ 1.4V Sink CC = 80µA = 3.2mA = 0 ...

Page 4

MIC705/06/07/08 Timing Diagram MIC705/06/07/08 Timing Diagram for Reset 4 Micrel, Inc. January 2006 ...

Page 5

... MIC705/06/07/08 Block Diagrams January 2006 * 4.4V for MIC706 MIC705/MIC706 Block diagram µ * 4.4V for MIC708 MIC707/MIC708 Block diagram 5 Micrel, Inc. MIC705/06/07/08 ...

Page 6

MIC705/06/07/08 Applications Information Battery Switchover Section The MIC691/693 monitors the supply voltage applied to the V pin. Whenever V falls below the reset threshold voltage CC CC and V , the device enters battery-backup mode. When this BATT happens, the ...

Page 7

MIC705/06/07/08 Package Information MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by ...

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