MIC1832NY Micrel Inc, MIC1832NY Datasheet

P Supervisor, 2.88V Or 2.55V VTH, PDIP-08 (Lead-Free)

MIC1832NY

Manufacturer Part Number
MIC1832NY
Description
P Supervisor, 2.88V Or 2.55V VTH, PDIP-08 (Lead-Free)
Manufacturer
Micrel Inc
Type
Simple Reset/Power-On Resetr
Datasheet

Specifications of MIC1832NY

Number Of Voltages Monitored
1
Output
Open Drain or Open Collector
Reset
Active High/Active Low
Reset Timeout
250 ms Minimum
Voltage - Threshold
2.55V, 2.88V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
General Description
The MIC1832 is a multifunction circuit which monitors mi-
croprocessor activity, external reset and power supplies in
microprocessor based systems. The circuit functions include
a watchdog time, power supply monitor, microprocessor reset,
and manual pushbutton reset input.
The power supply line is monitored with a comparator and
an internal voltage reference. /RST is forced low when an
out-of-tolerance condition exists and remains asserted for
at least 250ms after V
(2.55V or 2.88V). The /RST pin will remain logic low with
V
The Watchdog input (/ST) monitors µP activity and will as-
sert /RST if no µP activity has occurred with in the watchdog
timeout period. The watchdog timeout period is selectable
with nominal period of 150, 600, 1200 milliseconds.
Typical Application
January 2006
MIC1832
CC
as low as 1.4V.
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
CC
rises above the threshold voltage
PBRST
TOL GND
V CC
Ordering Information
MIC1832
Standard
MIC1832N
MIC1832M
TD
RST
1
ST
Part Number
Features
• Power OK/Resettime delay, 250ms min.
• Watchdog timer, 150ms, 600ms, or 1.2s typical
• Precision supply voltage monitor, select between 5% or
• Avaiable in 8-pin surface mount (SO)
• Debounced External reset input
• Low supply current, <18µA typical
Applications
• Autimotive systems
• Intelligent systems
• Critical microprocessor power monitoring
• Battery powered computers
• Controllers
V CC
10% of supply voltage
Pb-Free
MIC1832NY
MIC1832MY
RESET
I/O
V CC
µP
µP Supervisory Circuit
Temperature Range
MIC1832
–40ºC to +85ºC
–40ºC to +85ºC
8-Pin SOIC
8-Pin PDIP
Package
Micrel, Inc.
MIC1832

Related parts for MIC1832NY

MIC1832NY Summary of contents

Page 1

... Low supply current, <18µA typical Applications • Autimotive systems • Intelligent systems • Critical microprocessor power monitoring • Battery powered computers • Controllers Ordering Information Part Number Temperature Range Standard Pb-Free MIC1832N MIC1832NY MIC1832M MIC1832MY MIC1832 µP PBRST ST I/O RST ...

Page 2

MIC1832 Pin Configuration Pin Description Pin Number Pin Name 1 /PBRST TOL 4 GND 5 RST 6 /RST 7 / MIC1832 1 8 PBRST MIC1832 TD ST TOL 3 6 RST GND ...

Page 3

MIC1832 Absolute Maximum Ratings Terminal Voltage V ...............................................................–0. All other inputs ...............................–0. Input Current VCC ...................................................................... 250mA GND, all other inputs .............................................. 25mA Lead Temperature (soldering, 10 sec.) ...................... 300°C Storage Temperature .................................. –65°C to ...

Page 4

MIC1832 Note 1. Exceeding the absolute maximum rating may damage the device. Note 2. The device is not guaranteed to function outside its operating rating. Note 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series ...

Page 5

MIC1832 Timing Diagrams V CC RST RST PBRST RST RST January 2006 V V CCTP t RPD Figure 1. Power-Up/Power-Down Sequence Figure 2. Watchdog Input PDLY Figure 3. Pushbutton Reset 5 CCTP ...

Page 6

MIC1832 Applications Information Power Monitor The /RST and RST pins are asserted whenever V below the reset threshold voltage as determined by the TOL pin tolerance level (4.62V reset threshold voltage) can be selected by connecting the TOL ...

Page 7

... MIC1832 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 Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. ...

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