ASM810SEURF-T

ASM809,ASM8091,ASM810 July 2005 rev 1.8 3-Pin Microcontroller Power Supply Supervisor General Description Six voltage thresholds are available to support 3V to 5V systems: The ASM809/ASM8091/ASM810 are cost effective 3.0V, 3.3V RESET THRESHOLD and 5.0V power supply supervisor circuits optimized for lowpower microprocessor (µP), microcontroller (µC) and digital systems. They provide a reset output during power-up, powerdown and brown-out conditions. They provide excellent reliability by eliminating external components and adjustments. The ASM809/ASM8091/ASM810 are improved drop-in replacements for the Maxim MAX809/810 and feature 60% lower supply current. A reset signal is issued if the power supply voltage drops below a preset reset threshold and is asserted for at least 140mS after the supply has risen above the reset threshold. The ASM809/ ASM8091 has an active-low RESET output that is guaranteed Suffix Voltage (V) L 4.63 M 4.38 J 4.00 T 3.08 S 2.93 R 2.63 Features: to be in the correct logic state for VCC down to 1.1V. The ASM810 has an active-high RESET output. The reset • Monitor 5V, 3.3V and 3V supplies comparator is designed to ignore fast transients on VCC. • 140mS minimum reset pulse width • Active-low reset valid with 1.1V supply (ASM809/ ASM8091) Low supply current makes the ASM809/ASM8091/ASM810 ideal for use in portable and battery operated equipment. The • Small 3&5-pin SOT-23 Packages ASM809/ASM8091/ASM810 are available in a compact, • No external components industry standard 3&5-pin SOT-23 Packages. • Specified over full temperature range - -40°C to 105°C Applications Typical Operating Circuit • Embedded controllers • Portable/Battery operated systems • Intelligent instruments • Wireless communication systems • PDAs and handheld equipments • Computers VCC VCC ASM809 ASM8091 (ASM810) RESET (RESET) GND VCC µP RESET (RESET) Input GND Alliance Semiconductor 2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com Notice: The information in this document is subject to change without notice ASM809,ASM8091,ASM810 July 2005 rev 1.8 Pin Diagram 3-SOT23 GND 1 RESET ASM809 (ASM810) (RESET) RESET Block Diagram 5-SOT23 3 VCC 2 VCC 1 5 NC + - 2 ASM8091 GND 3 + - VCC 4 NC RESET Generator 4.63V 4.38V 4.00V 3.08V 2.93V 2.63V RESET (RESET) ASM809/8091 (ASM810) GND Pin Description Pin # Pin Name ASM8091 5-SOT 23 ASM809 3-SOT 23 ASM810 3 1 - GND 1 2 - RESET - - 2 RESET 2 3 - VCC Function Ground. RESET is asserted LOW if VCC falls below VTH and remains LOW for atleast 140mS (TRST) after VCC exceeds the threshold. RESET is asserted HIGH if VCC falls below VTH and remains HIGH for atleast 140mS (TRST) after VCC exceeds the threshold. Power supply input voltage (3.0V, 3.3V, 5.0V). Detailed Description A proper reset input enables a microprocessor / VCC microcontroller to start in a known state. ASM809/ASM8091/ 5V VTH 0V ASM810 assert reset to prevent code execution errors during power-up, power-down and brown-out conditions. RESET 5V 0V RESET 5V 0V Reset Timing The reset signal is asserted LOW for the ASM809,ASM8091 TRST ASM809 ASM8091 ASM810 and HIGH for the ASM810 when the VCC supply voltage falls below the threshold trip voltage and remains asserted for 140mS minimum after the VCC has risen above the Figure 1: Reset TIming Diagram threshold. 3-Pin Microcontroller Power Supply Supervisor Notice: The information in this document is subject to change without notice 2 of 12 ASM809,ASM8091,ASM810 July 2005 rev 1.8 Application Information Bidirectional Reset Pin Interfacing The ASM809/ASM8091/ASM810 can interface with µP / µC Negative VCC Transients The ASM809/ASM8091/ASM810 protect µpS from brownouts and low VCC. Short duration transients of 100mV amplitude and 60µpS or less duration typically do not cause a false bi-directional reset pins by connecting a 4.7kΩ resistor in series with the ASM809/ASM8091/ASM810 reset output and the µP/µC bi-directional reset pin. RESET. BUF Valid Reset with VCC under 1.1V When VCC is under 1.1V, to ensure logic inputs connected to Buffered RESET VCC the ASM809,ASM8091 RESET pin are in a known state, a 100kΩ pull-down resistor is needed at RESET. The value of the resistor is not critical. A 100kΩ pull-up resistor to VCC at RESET is needed with the ASM810. Power supply ASM809 ASM8091 RESET VCC Power Supply µC or µP 4.7kΩ RESET Input GND GND Bi-directional I/O Pin ASM809 ASM8091 Figure 4: Bidirectional Reset Pin Interfacing RESET 100kΩ GND Figure 2: RESET valid with VCC under 1.1V VCC 100kΩ Power Supply ASM810 RESET GND Figure 3: RESET valid with VCC under 1.1V 3-Pin Microcontroller Power Supply Supervisor Notice: The information in this document is subject to change without notice 3 of 12 ASM809,ASM8091,ASM810 July 2005 rev 1.8 Absolute Maximum Ratings Table 1: Parameter Min Max Units VCC -0.3 6.0 V RESET, RESET -0.3 VCC + 0.3 V Input current at VCC 20 mA Output current: RESET, RESET 20 mA Rate of Rise at VCC 100 V/µs 2 200 KV V Pin Terminal Voltage With Respect To Ground ESD rating HBM MM Note: These are stress ratings only and the functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. Absolute Maximum Ratings Table 2: Parameter Min Power Dissipation (TA = 70°C) Max Units 320 mW Operating temperature range -40 105 °C Storage temperature range -65 160 °C 300 °C Lead temperature (Soldering, 10 sec) Note: These are stress ratings only and the functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. 3-Pin Microcontroller Power Supply Supervisor Notice: The information in this document is subject to change without notice 4 of 12 ASM809,ASM8091,ASM810 July 2005 rev 1.8 Electrical Characteristics: Unless otherwise noted, VCC is over the full voltage range, TA = -40°C to 105°C. Typical values at TA = 25°C, VCC = 5V for L/M/J devices, VCC = 3.3V for T/S devices and VCC = 3V for R devices. Symbol VCC ICC Parameter Input Voltage Range Supply Current Conditions TA = 0°C to 70°C TA= -40°C to 85°C VCC < 5.5V TA = -40°C to 85°C VCC < 3.6V TA = 85°C to 105°C VCC < 5.5V TA = 85°C to 105°C VCC < 3.6V TA = 25°C TA = -40°C to 85°C TA = 85°C to 105°C TA = 25°C M devices TA = -40°C to 85°C TA = 85°C to 105°C TA = 25°C J devices VTH TA = -40°C to 85°C TA = 85°C to 105°C Reset Threshold TA = 25°C T devices TA = -40°C to 85°C TA = 85°C to 105°C TA = 25°C S devices TA = -40°C to 85°C TA = 85°C to 105°C TA = 25°C R devices TA = -40°C to 85°C TA = 85°C to 105°C 9 6.0 Delay Max Unit 5.5 5.5 V V 15 10 25 20 µA 4.56 4.50 4.40 4.63 4.70 4.75 4.86 4.31 4.25 4.16 4.38 4.45 4.50 4.56 3.93 3.89 3.80 4.00 4.06 4.10 4.20 3.04 3.00 2.92 3.08 3.11 3.15 3.23 2.89 2.85 2.78 2.93 2.96 3.00 3.08 2.59 2.55 2.50 2.63 2.66 2.70 2.76 V Reset Threshold Temp Coefficient VCC to Reset Typ 1.1 1.2 TA = -40°C to 105°C L devices Min VCC = VTH to VTH-100mV 30 ppm/°C 20 µs Notes: 1. Production testing done at TA = 25°C. Over-temperature specifications guaranteed by design only, using six sigma design limits. 2. RESET output is active LOW for the ASM809/ASM8091 and RESET output is active HIGH for the ASM810. 3-Pin Microcontroller Power Supply Supervisor Notice: The information in this document is subject to change without notice 5 of 12 ASM809,ASM8091,ASM810 July 2005 rev 1.8 Symbol Parameter Conditions Min Typ Max TA = -40°C to 85°C 140 240 560 TA = 85°C to 105°C 100 Unit TRST Reset Active Timeout Period ASM8091S VOL Low RESET Output Voltage ASM809/ ASM8091 High RESET Output Voltage ASM809/ ASM8091 VCC > VTH max., ISOURCE = 500µA, ASM809R/S/T Low RESET Output Voltage ASM810 VCC= VTH max., ISINK = 1.2mA, ASM810R/S/T 0.3 V VOL VCC= VTH max., ISINK = 3.2mA, ASM810L/M/J 0.4 V VOH High RESET Output Voltage ASM810 VOH VCC= VTH min., ISINK = 1.2mA, ASM809R/S/T and 840 0.3 0.4 VCC= VTH min., ISINK = 3.2mA, ASM809L/M/J 0.8VCC and ASM8091S 1.8V < VCC < VTH min., ISOURCE = 150µA V 0.3 VCC > 1.1V, ISINK = 50µA VCC > VTH max., ISOURCE = 800µA, ASM809L/M/J ms V VCC - 1.5 0.8VCC V Notes: 1. Production testing done at TA = 25°C. Over-temperature specifications guaranteed by design only, using six sigma design limits. 2. RESET output is active LOW for the ASM809/ASM8091 and RESET output is active HIGH for the ASM810. 3-Pin Microcontroller Power Supply Supervisor Notice: The information in this document is subject to change without notice 6 of 12 ASM809,ASM8091,ASM810 July 2005 rev 1.8 Typical Operating Characteristics Unless otherwise noted, VCC is over the full voltage range, TA = -40°C to 105°C. Typical values at TA = 25°C, VCC = 5V for L/M/J devices, VCC = 3.3V for T/S devices and VCC = 3V for R devices. Supply Current Vs. Temperature Supply Current (µA) ASM809T ASM809R Temperature (°C) Normalized Reset Threshold Normalized Reset Threshold Vs. Temperature ASM809T ASM809R Temperature (°C) Power-up Reset Timeout Period (ms) Power-up Reset Timeout Period Vs. Temperature ASM809T ASM809R Temperature (°C) 3-Pin Microcontroller Power Supply Supervisor Notice: The information in this document is subject to change without notice 7 of 12 ASM809,ASM8091,ASM810 July 2005 rev 1.8 Package Dimensions Plastic SOT-23 (3-Pin) Inches Min Millimeters Max Min Max Plastic SOT-23 (3-Pin) A 0.030 0.046 0.75 1.17 A1 0.002 0.006 0.05 0.15 B 0.012 0.020 0.30 0.50 C 0.003 0.008 0.08 0.20 D 0.110 0.120 2.80 3.04 E 0.047 0.055 1.20 1.40 e 0.037 BSC 0.95 BSC e1 0.075 BSC 1.9 BSC H 0.083 0.104 2.10 2.64 L 0.016 0.024 0.40 0.60 a o o o o 8 S 0 8 NA 0 NA D B E H e S A a A1 e1 C 3-Pin Microcontroller Power Supply Supervisor Notice: The information in this document is subject to change without notice L 8 of 12 July 2005 ASM809,ASM8091,ASM810 rev 1.8 5L SOT- 23 Package 1. 2. 3. 4. 5. 6. NOTE: DIMENSIONS ARE IN MM. DRAWING NOT TO SCALE. DIMENSIONS ARE INCLUSIVE OF PLATING. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR. MOLD FLASH SHALL NOT EXCEED 0.254MM. JEDEC PACKAGE REFERENCE IS MO-193. 3-Pin Microcontroller Power Supply Supervisor Notice: The information in this document is subject to change without notice 9 of 12 ASM809,ASM8091,ASM810 July 2005 rev 1.8 Ordering Information: Part Number Reset Threshold (V) Temperature Range Pin-Package Package Marking (LL Lot Code) ASM809 ACTIVE LOW RESET, TIN-LEAD PLATED DEVICES ASM809LEUR 4.63 -40°C to +105°C 3-SOT23 SALL ASM809MEUR 4.38 -40°C to +105°C 3-SOT23 SBLL ASM809JEUR 4.00 -40°C to +105°C 3-SOT23 SCLL ASM809TEUR 3.08 -40°C to +105°C 3-SOT23 SDLL ASM809SEUR 2.93 -40°C to +105°C 3-SOT23 SELL ASM809REUR 2.63 -40°C to +105°C 3-SOT23 SFLL ASM8091SEUK 2.93 -40°C to +105°C 5-SOT23 LO83 ASM809 ACTIVE LOW RESET, LEAD FREE DEVICES ASM809LEURF 4.63 -40°C to +105°C 3-SOT23 NALL ASM809MEURF 4.38 -40°C to +105°C 3-SOT23 NBLL ASM809JEURF 4.00 -40°C to +105°C 3-SOT23 NCLL ASM809TEURF 3.08 -40°C to +105°C 3-SOT23 NDLL ASM809SEURF 2.93 -40°C to +105°C 3-SOT23 NELL ASM809REURF 2.63 -40°C to +105°C 3-SOT23 NFLL ASM8091SEUKF 2.93 -40°C to +105°C 5-SOT23 LO83 ASM810 ACTIVE HIGH RESET, TIN-LEAD PLATED DEVICES ASM810LEUR 4.63 -40°C to +105°C 3-SOT23 SGLL ASM810MEUR 4.38 -40°C to +105°C 3-SOT23 SHLL ASM810JEUR 4.00 -40°C to +105°C 3-SOT23 SILL ASM810TEUR 3.08 -40°C to +105°C 3-SOT23 SJLL ASM810SEUR 2.93 -40°C to +105°C 3-SOT23 SKLL 2.63 -40°C to +105°C 3-SOT23 SLLL ASM810REUR ASM810 ACTIVE HIGH RESET, LEAD FREE DEVICES ASM810LEURF 4.63 -40°C to +105°C 3-SOT23 NGLL ASM810MEURF 4.38 -40°C to +105°C 3-SOT23 NHLL ASM810JEURF 4.00 -40°C to +105°C 3-SOT23 NILL ASM810TEURF 3.08 -40°C to +105°C 3-SOT23 NJLL ASM810SEURF 2.93 -40°C to +105°C 3-SOT23 NKLL ASM810REURF 2.63 -40°C to +105°C 3-SOT23 NLLL Notes: • For parts to be packed in Tape and Reel, add “-T” at the end of the part number. • Alliance Semiconductor's lead free parts are RoHS compliant. All parts are Lead Free by default. Contact factory for Non Lead Free devices 3-Pin Microcontroller Power Supply Supervisor Notice: The information in this document is subject to change without notice 10 of 12 ASM809,ASM8091,ASM810 July 2005 rev 1.8 Related Products: Max Supply Current Package Pins ASM810 ASM811 ASM812 15µA 15µA 15µA 15µA 15µA 3 3 4 4 5 „ „ SOT-143 SOT-143 Manual RESET input Package Type SOT-23 Active-HIGH RESET Output Active-LOW RESET Output ASM8091 ASM809 SOT-23 „ „ SOT-23 „ „ 3-Pin Microcontroller Power Supply Supervisor Notice: The information in this document is subject to change without notice „ 11 of 12 ASM809,ASM8091,ASM810 July 2005 rev 1.8 Alliance Semiconductor Corporation 2575 Augustine Drive, Santa Clara, CA 95054 Tel: 408 - 855 - 4900 Fax: 408 - 855 - 4999 www.alsc.com Copyright © Alliance Semiconductor All Rights Reserved Part Number: ASM809,ASM8091,ASM810 Document Version: V.1.8 © Copyright 2003 Alliance Semiconductor Corporation. All rights reserved. Our three-point logo, our name and Intelliwatt are trademarks or registered trademarks of Alliance. All other brand and product names may be the trademarks of their respective companies. Alliance reserves the right to make changes to this document and its products at any time without notice. Alliance assumes no responsibility for any errors that may appear in this document. The data contained herein represents Alliance's best data and/or estimates at the time of issuance. Alliance reserves the right to change or correct this data at any time, without notice. If the product described herein is under development, significant changes to these specifications are possible. The information in this product data sheet is intended to be general descriptive information for potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or customer. Alliance does not assume any responsibility or liability arising out of the application or use of any product described herein, and disclaims any express or implied warranties related to the sale and/or use of Alliance products including liability or warranties related to fitness for a particular purpose, merchantability, or infringement of any intellectual property rights, except as express agreed to in Alliance's Terms and Conditions of Sale (which are available from Alliance). All sales of Alliance products are made exclusively according to Alliance's Terms and Conditions of Sale. The purchase of products from Alliance does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any other intellectual property rights of Alliance or third parties. Alliance does not authorize its products for use as critical components in life-supporting systems where a malfunction or failure may reasonably be expected to result in significant injury to the user, and the inclusion of 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. 3-Pin Microcontroller Power Supply Supervisor Notice: The information in this document is subject to change without notice 12 of 12