ASM1233D ALSC [Alliance Semiconductor Corporation], ASM1233D Datasheet

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ASM1233D

Manufacturer Part Number
ASM1233D
Description
Low Power, 5V/3.3V, uP Reset, Active LOW, Open-Drain Output
Manufacturer
ALSC [Alliance Semiconductor Corporation]
Datasheet
March 2005
rev 1.3
General Description
The ASM1233D-L/1233D/1233M are voltage supervisors with
low-power, 5/3.3V µP Reset, with an active LOW, open-drain
output. Maximum supply current over temperature is 15µA for
3.3V devices and 20µA for 5V devices.
The ASM1233D-L/1233D/1233M generates an active LOW
reset signal whenever the monitored supply is out of tolerance.
A precision reference and comparator circuit monitors power
supply (V
an out-of-tolerance condition is detected, an internal power-fail
signal is generated which forces an active LOW reset signal.
After V
remains active for 350ms to allow the power supply and system
microprocessor to stabilize.
The ASM1233D-L/1233D/1233M is designed with an open-
drain output stage and operates over the extended industrial
temperature range. These devices are available in compact
SOT-223, SO-8 and TO-92 packages.
Other low power products in this family include ASM1810/11/
12/15/16/17.
Key Features
Low Supply Current
• 15µA maximum (<=3.6V), 20µA maximum (5.5V)
Automatically restarts a microprocessor after power failure
350ms reset delay after V
dition
Active LOW power-up reset, 5kΩ internal pull-up
Precision temperature-compensated voltage reference and
comparator
Eliminates external components
Low-cost SOT-223/SO-8/TO-92 packages
Operating temperature: -40°C to +85°C
CC
CC
returns to an in-tolerance condition, the reset signal
) level. The tolerance are 5%,10% and 15%. When
2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com
Low Power, 5V/3.3V, µP Reset, Active LOW, Open-Drain Output
CC
Notice: The information in this document is subject to change without notice
returns to an in-tolerance con-
Alliance Semiconductor
Applications
Typical Operating Circuit
Block Diagram
Set-top boxes
Cellular phones
PDAs
Energy management systems
Embedded control systems
Printers
Single board computers
Reference
Tolerance
Supply
V
Bias
CC
ASM1233D-L,ASM1233D,ASM1233M
V
+
+
GND
-
-
CC
RESET
ASM1233D-L/D/M
Typical
Typical
350ms
Delay
Delay
GND
Microprocessor
RESET
5.0kΩ
RESET

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ASM1233D Summary of contents

Page 1

... CC remains active for 350ms to allow the power supply and system microprocessor to stabilize. The ASM1233D-L/1233D/1233M is designed with an open- drain output stage and operates over the extended industrial temperature range. These devices are available in compact SOT-223, SO-8 and TO-92 packages. ...

Page 2

... Notice: The information in this document is subject to change without notice SO-8 RESET GND 5 Pin Name SO-8 SOT-223 4 1 3,5,6,7&8 - ASM1233D-L/D/M TO-92 ASM1233D-L ASM1233D ASM1233M Description GND Ground. RESET Active LOW reset output. V Power supply input connection ...

Page 3

... March 2005 rev 1.3 Application Information Operation - Power Monitor The ASM1233D-L/1233D/1233M detects out-of-tolerance power supply conditions. It resets a processor during power- up, power-down and generates a reset to the system processor when the monitored power supply voltage is below the reset threshold. When an out-of-tolerance V detected, the RESET signal is asserted ...

Page 4

... NOTE: These are stress ratings only and functional use is not implied. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability. Low Power, 5V/3.3V, µP Reset, Active LOW, Open-Drain Output Notice: The information in this document is subject to change without notice Min -0.5 -0.5 -40 -55 HBM MM ASM1233D-L/D/M Max Unit 0 °C 260 ° ...

Page 5

... RESET output open CC ASM1233D-LZ-5 ASM1233D-LZ-10 ASM1233D-LZ-15 ASM1233DZ-5 ASM1233DZ-10 CCTP ASM1233DZ-15 ASM1233M-5 ASM1233M-55 ASM1233M-3 ASM1233D, ASM1233MS-5, ASM1233MS-55 HTL ASM1233MS-3 ASM1233D-L ASM1233D, ASM1233MS-5, ASM1233MS-55 LTL ASM1233MS-3 ASM1233D OUT RPD ASM1233D-L, ASM1233M RPU ASM1233D ASM1233D-L/D/M Min Typ Max Unit 1 -0.5V V -0. ...

Page 6

... ASM1233D 4.625, 4.375, 4.125 ASM1233M 4.625, 4.375, 2.720 ASM1233D-L 3.06, 2.880, 2.720 Low Power, 5V/3.3V, µP Reset, Active LOW, Open-Drain Output Notice: The information in this document is subject to change without notice ASM1233D-L/D/M RESET Time Output Stage (ms) 150 Push-Pull 150 Open-Drain 150 ...

Page 7

... BSC H 0.264 0.287 L 0.036 MIN L2 0.0024 MIN α 0° 6° Low Power, 5V/3.3V, µP Reset, Active LOW, Open-Drain Output Notice: The information in this document is subject to change without notice SOT-223 Dimensions in millimeters Min Max 1.55 1.80 0.02 0.10 0.60 0.80 2.90 3.10 0.24 0.32 6.30 6.70 3.30 3.70 2.30 BSC 4.60 BSC 6.70 7.30 0.91 MIN 0.06 BSC 0° 6° ASM1233D-L/D ...

Page 8

... Low Power, 5V/3.3V, µP Reset, Active LOW, Open-Drain Output Notice: The information in this document is subject to change without notice Plastic SO-8 (8-Pin θ Dimensions in Millimeters Min Max 1.35 1.75 0.10 0.25 1.25 1.50 0.31 0.51 0.18 0.25 4.90 BSC 3.91 BSC 1.27 BSC 6.00 BSC 0.41 1.27 0° 8° ASM1233D-L/D ...

Page 9

... Low Power, 5V/3.3V, µP Reset, Active LOW, Open-Drain Output Notice: The information in this document is subject to change without notice To-92 (3-Pin) Dimensions in Millimeters Min Max 4.445 4.699 0.406 0.508 0.356 0.406 4.445 4.699 3.505 3.658 2.489 2.591 1.143 1.397 4.269 4.420 12.7 14.86 2.413 2.515 ASM1233D-L/D ...

Page 10

... LOW 15% 350 ms LOW 5% 350 ms LOW 10% 350 ms LOW 15% 350 ms LOW 5% 350 ms LOW 10% 350 ms LOW 15% 350 ms LOW ASM1233D-L/D/M Package Package Marking 3L TO-92 ASM1233D-L-5 3L TO-92 ASM1233D-L-10 3L TO-92 ASM1233D-L-15 4L SOT-223 RVLL 4L SOT-223 RWLL 4L SOT-223 RXLL 3L TO-92 ASM1233D-5 3L TO-92 ASM1233D-10 3L TO-92 ASM1233D-15 4L SOT-223 RSLL 4L SOT-223 RTLL 4L SOT-223 RULL 3L TO-92 ASM1233M-55 3L TO-92 ASM1233M-5 3L TO-92 ASM1233M-3 ...

Page 11

... Alliance products in such life-supporting systems implies that the manufacturer assumes all risk of such use and agrees to indemnify Alliance against all claims arising from such use. ASM1233D-L/D/M Copyright © Alliance Semiconductor All Rights Reserved Part Number: ASM1233D-L/D/M Document Version: 1.3 ...

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