asm1815-5ft Alliance Memory, Inc, asm1815-5ft Datasheet

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asm1815-5ft

Manufacturer Part Number
asm1815-5ft
Description
Power, 3.3v/3.0v Reset Active Push-pull Output
Manufacturer
Alliance Memory, Inc
Datasheet
February 2005
rev 1.4
General Description
The ASM1815 is a voltage supervisory device with low-power,
3.3V/3.0V µP Reset, active LOW, Push-Pull output. Maximum
supply current over temperature is a low 15µA (at 3.6V).
The ASM1815 generates an active LOW reset signal whenever
the monitored supply is out of tolerance. A precision reference
and comparator circuit monitor power supply (V
Tolerance level options are 5%, 10% and 20%. When an out-of-
tolerance condition is detected, an internal power-fail signal is
generated which forces an active LOW reset signal. After V
returns to an in-tolerance condition, the reset signal remains
active for 150ms to allow the power supply and system
microprocessor to stabilize.
The ASM1815 is designed with a push-pull output stage and
operates over the extended industrial temperature range.
Devices are available in TO-92 and compact surface mount
SOT-23 packages.
Other low power products in this family include the ASM1810/
11/12/16/17, ASM1233D and ASM1233M.
Key Features
Low Supply Current
•20 µA maximum (5.5 V)
•15 µA maximum (3.6 V)
Automatically restarts a microprocessor after power failure
150ms reset delay after V
dition
Active LOW power-up reset
Precision temperature-compensated voltage reference and
comparator
Eliminates external components
TO-92 and compact surface mount SOT-23 package
Push-Pull output for minimum current drain
Operating temperature -40°C to +85°C
2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com
Low Power, 3.3V/3.0V µP Reset Active LOW, Push-Pull Output
CC
Notice: The information in this document is subject to change without notice
returns to an in-tolerance con-
CC
)
level.
Alliance Semiconductor
CC
Applications
Typical Operating Circuit
Block Diagram
V
V
Set-top boxes
Cellular phones
PDAs
Energy management systems
Embedded control systems
Printers
Single board computers
Reference
Reference
Tolerance
Tolerance
CC
CC
Supply
Supply
Bias
Bias
2
ASM1815
+
+
-
-
V
GND
CC
RESET
ASM1815
Typical
Typical
150ms
150ms
Delay
Delay
GND
3
Microprocessor
RESET
ASM1815
1
RESET
RESET

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asm1815-5ft Summary of contents

Page 1

... The ASM1815 is designed with a push-pull output stage and operates over the extended industrial temperature range. Devices are available in TO-92 and compact surface mount SOT-23 packages ...

Page 2

... GND Pin Description TO-92 SOT-23 Pin # Pin # Notice: The information in this document is subject to change without notice Pin Name RESET V CC GND Low Power, 3.3V/3.0V µP Reset ASM1815 TO-92 ASM1815 Description Active LOW reset output Power supply input Ground ...

Page 3

... V CC RESET Figure 2: Timing Diagram: Power-Down V (MAX) CCTP Output Conditions The ASM1815 active LOW reset signal is valid as long as V remains below 1.2V. The RESET output on the CC ASM1815 uses a push-pull drive stage that can maintain a t valid output below 1.2V. To sink current with V RPU a resistor can be connected from the reset pin (RESET) to Ground (see Figure 3) ...

Page 4

... Output Voltage I Output Current I Output Current I Operating Current I Operating Current V Trip Point (ASM1815R- CCTP V Trip Point (ASM1815R-10 CCTP V Trip Point (ASM1815R-20 CCTP C Output Capacitance V Detect to RESET Low t CC RPD V Slew Rate CC (V (MAX (MIN) CCTP CCTP V Slew Rate ...

Page 5

... BSC e1 0.075 BSC H 0.083 0.104 L 0.016 0.024 Notice: The information in this document is subject to change without notice Plastic SOT-23 (3-Pin Millimeters Min Max 0.75 1.17 0.05 0.15 0.30 0.50 0.08 0.20 2.80 3.04 1.20 1.40 0.95 BSC 1.9 BSC 2.10 2.64 0.40 0. Low Power, 3.3V/3.0V µP Reset ASM1815 ...

Page 6

... 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 Low Power, 3.3V/3.0V µP Reset ASM1815 ...

Page 7

... Notice: The information in this document is subject to change without notice RESET Time Output Stage (ms) 150 Push-Pull 150 Open-Drain 150 Push-Pull 150 Push-Pull 150 Open-Drain 150 Push-Pull 350 Open-Drain 350 Open-Drain Low Power, 3.3V/3.0V µP Reset ASM1815 RESET Polarity LOW LOW HIGH LOW LOW HIGH LOW LOW ...

Page 8

... Low Power, 3.3V/3.0V µP Reset ASM1815 SOT-23 RESET Package Package Polarity Marking LOW RJLL LOW RKLL LOW RLLL LOW KJLL LOW KKLL LOW KLLL TO-92 RESET Package Package Polarity Marking LOW ASM1815-5 LOW ASM1815-10 LOW ASM1815-20 LOW ASM1815-5F LOW ASM1815-10F LOW ASM1815-20F ...

Page 9

... 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. ASM1815 Copyright © Alliance Semiconductor All Rights Reserved Part Number: ASM1815 Document Version: 1.4 ...

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