mic706pny Micrel Semiconductor, mic706pny Datasheet

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mic706pny

Manufacturer Part Number
mic706pny
Description
Mic706p/r/s/t, Mic708r/s/t ?p Supervisory Circuit
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
MIC706P/R/S/T, MIC708R/S/T
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
MIC706
V CC
+3.0 or +3.3V (Regulated)
1
Part Number
RESET
Features
• 30µA Maximum Supply Current
• Debounced manual reset input is TTL/CMOS
• Reset Pulse Width, 200ms
• Watchdog timer, 1.6s (MIC706)
• Precision supply voltage monitor
• Early power fail warning or low battery detect
Applications
• Laptop computers
• Intelligent systems
• Critical microprocessor power monitoring
• Printers
• Computers
• Controllers
WDO
PFO
WDI
Compatible
MIC706P/R/S/T, MIC708R/S/T
Pb-Free
MIC70_ _NY
MIC70_ _MY
I/O Line
RESET
NMI
Interrupt
µP Supervisory Circuit
V CC
µP
Temperature Range
–40ºC to +85ºC
–40ºC to +85ºC
MIC706P/R/S/T, MIC708R/S/T
8-Pin SOIC
8-Pin PDIP
Package
Micrel, Inc.

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mic706pny Summary of contents

Page 1

MIC706P/R/S/T, MIC708R/S/T 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 ...

Page 2

MIC706P/R/S/T, MIC708R/S/T Pin Configuration Pin Description Pin Number Pin Number Pin Name MIC705/6 MIC707 N/A N N/A N/A 8 MIC706P/R/S/T, MIC708R/S WDO ...

Page 3

MIC706P/R/S/T, MIC708R/S/T Absolute Maximum Ratings Terminal Voltage V ..........................................................–0.3V to +6.0V CC All other inputs .............................–0. Input Current V , Gnd ................................................................ 25mA CC Output Current (all outputs) ........................................ 20mA Lead Temperature (soldering, 10 sec.) ...................... 300°C Storage ...

Page 4

MIC706P/R/S/T, MIC708R/S/T Timing Diagram MIC706P/R/S/T, MIC708R/S/T Timing Diagram for Reset 4 Micrel, Inc. January 2006 ...

Page 5

MIC706P/R/S/T, MIC708R/S/T Block Diagram MR ( (2) V THR * WDI (6) PFI (4) * 2.63, 2.93, or 3.08V January 2006 V CC 250•A RESET + GENERATOR - WATCHDOG TIMER + - 1.25V MIC705/MIC706 Block diagram • V ...

Page 6

MIC706P/R/S/T, MIC708R/S/T Applications Information Power Fail Warning An additional comparator which is independent of the other functions on the MIC706P/R/S/T is provided for early warning of power failure. An external voltage divider can be used to compare unregulated DC to ...

Page 7

MIC706P/R/S/T, MIC708R/S/T Package Information 0.035 0.015 0.150 0.125 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 ...

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