MIC6315-26D2U MICREL [Micrel Semiconductor], MIC6315-26D2U Datasheet

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MIC6315-26D2U

Manufacturer Part Number
MIC6315-26D2U
Description
Open-Drain ?P Reset Circuit
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet

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General Description
The MIC6315 is an inexpensive reset generator circuit that
monitors power supplies in microprocessor based sys-
tems.
The function of this device is to assert a reset if either the
power supply drops below a designated reset threshold
level or /MR is forced low. Several different reset threshold
levels are available to accommodate 3V, 3.3V or 5V powered
systems.
The MIC6315 has an active low, open-drain /RESET output.
The reset output is guaranteed to remain asserted for a
minimum of either 20ms, 140ms, or 1100ms after V
risen above the designed reset threshold level. The MIC6315
comes in a 4-pin SOT-143 package.
Typical Application
October 2005
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
MR
MIC6315
V CC
RESET
CC
has
V CC
1
Features
• Precision voltage monitor for 3V, 3.3V or 5V power sup-
• /RESET remains valid with V
• 5µA supply current
• 20ms, 140ms, or 1100ms minimum reset pulse widths
• Manual reset input
• 4-pin SOT-143 package
Applications
• Portable equipment
• Intelligent instruments
• Critical microprocessor power monitoring
• Printers/computers
• Embedded controllers
10k
plies
available
RESET
Open-Drain µP Reset Circuit
V CC
µP
MIC6315
CC
as low as 1V
M9999-102005

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MIC6315-26D2U Summary of contents

Page 1

... General Description The MIC6315 is an inexpensive reset generator circuit that monitors power supplies in microprocessor based sys- tems. The function of this device is to assert a reset if either the power supply drops below a designated reset threshold level or /MR is forced low. Several different reset threshold levels are available to accommodate 3V, 3 ...

Page 2

... Ordering Information (1, 2) Standard Pb-Free Part Number Marking Part Number MIC6315-26D2U NY MIC6315-26D2UY MIC6315-29D2U NM MIC6315-29D2UY MIC6315-30D2U N2 MIC6315-30D2UY MIC6315-31D2U NF MIC6315-31D2UY MIC6315-40D2U NW MIC6315-40D2UY MIC6315-41D2U N6 MIC6315-41D2UY MIC6315-44D2U NG MIC6315-44D2UY MIC6315-46D2U NQ MIC6315-46D2UY MIC6315-26D3U NR MIC6315-26D3UY MIC6315-29D3U NP MIC6315-29D3UY MIC6315-30D3U N3 MIC6315-30D3UY MIC6315-31D3U NU MIC6315-31D3UY MIC6315-40D3U N8 MIC6315-40D3UY MIC6315-41D3U N5 MIC6315-41D3UY MIC6315-44D3U NH MIC6315-44D3UY MIC6315-46D3U ...

Page 3

Absolute Maximum Ratings Terminal Voltage (V , /RESET) ........................................–0.3V to 6.0V CC (/MR) ..........................................–0. Rate of Rise (V ) .................................................. 100V/µs CC Input Current (V , /MR) ............................................ 20mA CC Output Current (/RESET) ........................................... 20mA Lead Temperature (soldering, ...

Page 4

Timing Diagram V CC /MR /RESET Functional Diagram V CC (4) MR (3) M9999-102005 RST Reset Timing Diagram + - Reset RESET Threshold (V) GENERATOR 4 t RST RESET (2) GND (1) October 2005 ...

Page 5

... For most applications, this volt- age will be the same power supply that supplies V MIC6315 possible, however, to tie this resistor to some other voltage. This will allow the MIC6315 to monitor one voltage while level-shifting the /RESET output to some other voltage ...

Page 6

Package Information 0.950 (0.0374) TYP 3.05 (0.120) 2.67 (0.105) 0.800 (0.031) TYP 0.400 (0.016) TYP 3 PLACES MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this datasheet ...

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