AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer PowerManager SmartSwitch™™ General Description Features The AAT351x PowerManager products are members of AnalogicTech's Total Power Management IC™ (TPMIC™) product family. This family of microprocessor reset circuits provides the ultimate in versatility, allowing system designers full customization of the µP monitor and reset function without any additional components. The AAT351x family offers several combinations of threshold voltage, watchdog timeout period, reset active period, and output drive configurations, which are all factory-programmed options. All devices are available in 32 reset threshold voltages from 2.6V up to 5V, with three watchdog timeout periods from 6.3ms to 1600ms and three reset timeouts from 1ms up to 140ms. Available output configurations are active low push-pull, active low open drain, active low bi-directional, and active high push-pull. • • • • • The AAT351x family is designed to ignore fast negative transients on VDD and to ensure that reset outputs remain valid down to 1V. Applications The AAT351x family is available in the Pb-free, space-saving 5-pin SOT23 surface mount package and is specified over the -40 to +85°C temperature range. • • • • • • • • • • • Tight Voltage Tolerance: ±1.5% Low Quiescent Current: 5µA Guaranteed Reset Valid Down to 1V 32 Voltage Options from 2.6V to 5.0V Three Reset Active Period Options: — 1ms, 20ms, 140ms Three Watchdog Timeout Period Options: — 6.3ms, 102ms, 1600ms Four Output Options: — Open Drain — Inverting — Non-Inverting — Bi-Directional Low Temperature Coefficient: 100ppm/°C 5-Pin SOT23 Package Critical µP and µC Supply Monitoring Embedded Control Systems Industrial Controllers Intelligent Instruments Notebook Computers Portable Electronics Power-On Reset Circuits Typical Application V DD VDD VCC AAT351x RESET (RESET) WDI RESET INPUT µP I/O LINE GND 3510.2006.03.1.7 1 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Pin Descriptions Pin # AAT3510 AAT3512 AAT3513 AAT3511 AAT3514 AAT3517 AAT3518 AAT3515 AAT3516 AAT3519 Symbol 1 N/A 1 1 RESET 2 N/A 2 1 2 3 2 3 GND RESET 3 4 3 4 N/A 4 4 N/A MR WDI 5 5 5 5 VCC Function AAT3510/13/15: RESET output goes low whenever VDD falls below the reset threshold. CMOS push-pull output. AAT3511/14/16: RESET output goes low whenever VDD falls below the reset threshold. Bidirectional CMOS pushpull output intended to interface directly to microprocessors with bi-directional resets. AAT3517/18/19: RESET output goes low whenever VDD falls below the reset threshold. Open drain output. Connect a pull-up resistor to any supply voltage up to 5.5V. Ground connection pin. RESET active-high output. This CMOS push-pull signal is the logical inverse of RESET. Manual reset input pin. Active low. Pull low to force a reset. Watchdog input pin. Triggers a reset if it remains in a steady state for the duration of the watchdog timer period. Input voltage pin. Pin Configuration 5-lead SOT23 (Top View) 5-lead SOT23 (Top View) RESET 1 GND 2 MR 3 5 4 WDI RESET 1 GND 2 MR 3 5 VCC 4 WDI AAT3510 AAT3511 AAT3517 AAT3512 5-lead SOT23 (Top View) 5-lead SOT23 (Top View) RESET 1 GND 2 RESET 3 5 4 AAT3513 AAT3514 AAT3518 2 VCC VCC WDI RESET 1 GND 2 RESET 3 5 VCC 4 MR AAT3515 AAT3516 AAT3519 3510.2006.03.1.7 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Absolute Maximum Ratings1 TA = 25°C, unless otherwise noted. Symbol Description VCC VMR, VWDI VCC to GND MR, WDI to GND RESET to GND (Push-Pull or Bidirectional Output) RESET to GND (Open Drain Output) Maximum Continuous Input Current RESET/RESET Output Current Rate of Rise of VCC Operating Junction Temperature Range (-40°C to +150°C) VRESET IVCC, IMR, IWDI IRESET dVCC/dt TJ Max Units -0.3 to 6 -0.3 to VCC + 0.3 -0.3 to VCC + 0.3 -0.3 to 6 20 20 100 150 V V mA mA V/µs °C Value Units 190 526 °C/W mW V Thermal Information2 Symbol ΘJA PD Description Maximum Thermal Resistance Maximum Power Dissipation 1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time. 2. Mounted on an FR4 board. 3510.2006.03.1.7 3 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Electrical Characteristics VCC = 2.5V to 5.5V, TA = -40°C to +85°C1, unless otherwise noted. Typical values are at TA = 25°C. Symbol Description VCC Operating Voltage Range ICC Supply Current VTH Reset Threshold Voltage TC Reference Voltage Temperature Coefficient tRP Reset Active Timeout Period TRD VCC to RESET Delay Conditions TA = -40°C to +85°C AAT3510/1/2/3/4/7/8: MR & WDI Unconnected AAT3515/6/9: MR Unconnected TA = 25°C TA = -40 to +85°C Min Typ 1 VCC = 3.6V VCC = 5.5V VCC = 3.6V VCC = 5.5V 5 6 VTHNOM-1.5% VTH VTHNOM-2.5% VTH -40°C < TA < +85°C AAT351xIGV-xx-A-x-T1 AAT351xIGV-xx-B-x-T1 AAT351xIGV-xx-C-x-T1 VCC Falling at 1mV/µs Max Units 5.5 15 18 15 18 VTHNOM+1.5% VTHNOM+2.5% V ±40 1 20 140 1.4 28 200 40 µA V ppm/°C 2 40 280 ms µs Push/Pull RESET Output (AAT3510, 3512, 3513, 3514, 3515, 3516, 3518, 3519) VOL RESET Low Output Voltage VOH RESET High Output Voltage RESET Low Output Voltage VOH RESET High Output Voltage VCC ≥ 1.0V, ISINK = 50µA VCC ≥ 1.2V, ISINK = 100µA VCC ≥ 2.7V, ISINK = 1.2mA VCC ≥ 4.5V, ISINK = 3.2mA VCC ≥ 2.7V, ISOURCE = 500µA VCC ≥ 4.5V, ISOURCE = 800µA VCC ≥ 2.7V, ISINK = 1.2mA VCC ≥ 4.5V, ISINK = 3.2mA VCC ≥ 1.8V, ISOURCE = 150µA VCC ≥ 2.7V, ISOURCE = 500µA VCC ≥ 4.5V, ISOURCE = 800µA 0.3 0.3 0.3 0.4 0.8 x VCC VCC - 1.5 V V 0.3 0.4 0.8 x VCC 0.8 x VCC VCC - 1.5 V Bidirectional RESET Output (AAT3511, 3514, 3516) tS tR VPTH Transition Flip-Flop Setup Time2 RESET Output Rise Time3 400 VCC = 3.0V, CL = 120pF VCC = 5.0V, CL = 200pF VCC = 3.0V, CL = 250pF VCC = 5.0V, CL = 400pF Active Pull-Up Enable VCC = 5.0V Threshold RESET Active Pull-Up VCC = 5.0V Current RESET Pull-Up Resistance ns 333 333 666 666 0.4 4.2 ns 0.65 V 20 mA 4.7 5.2 kΩ 1. Over-temperature limits are guaranteed by design, not production tested. 2. This is the minimum time RESET must be held low by an external pull-down source to set the active pull-up flip-flop. 3. Measured from RESET VOL to (0.8 x VCC), open circuit output. 4 3510.2006.03.1.7 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Electrical Characteristics VCC = 2.5V to 5.5V, TA = -40°C to +85ºC1, unless otherwise noted. Typical values are at TA = 25°C. Symbol Description Conditions Min Typ Max Units Open-Drain RESET Output (AAT3517, 3518, 3519) VOL ID(OFF) RESET Low Output Voltage VCC VCC VCC VCC ≥ ≥ ≥ ≥ 1.0V, 1.2V, 2.7V, 4.5V, ISINK ISINK ISINK ISINK = = = = 50µA 100µA 1.2mA 3.2mA 0.3 0.3 0.3 0.4 1.0 Reset Leakage Current V µA Watchdog Input (AAT3510, 3511, 3512, 3513, 3514, 3517, 3518) tWD Watchdog Timeout Period tWDI VIL VIH WDI Minimum Pulse Width WDI Input Threshold3 WDI Input Threshold3 IWDI WDI Input Current4 AAT351xIGV-xx-x-A-T1 AAT351xIGV-xx-x-B-T1 AAT351xIGV-xx-x-C-T12 VIL = 0.3 x VCC, VIH = 0.7 x VCC 4.3 71 1.12 6.3 102 1.6 50 9.3 153 2.4 ms s ns 0.3 x VCC WDI = VCC, Time Average VWDI = 0, Time Average -20 120 -15 0.8 x VCC 160 V µA Manual RESET Input (AAT3510, 3511, 3512, 3515, 3516, 3517, 3519) VIL VIH MR MR MR MR MR MR Input Threshold Input Threshold Input Pulse Width Glitch Rejection Internal Pull-Up Resistance to Reset Delay 0.3 x VCC 0.7 x VCC 1 TA = 25°C VCC = 5V 35 100 52 230 75 V µs ns kΩ ns 1. Over-temperature limits are guaranteed by design, not production tested. 2. Watchdog timeout period C is not available on AAT3513, AAT3514, and AAT3518. 3. WDI is internally serviced within the watchdog period if WDI is left unconnected. 4. The WDI input current is specified as the average input current when the WDI input is driven high or low. The WDI input is designed for a three-stated-output device with a 10µA maximum leakage current and capable of driving a maximum capacitive load of 200pF. The three-state device must be able to source and sink at least 200µA when active. 3510.2006.03.1.7 5 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Typical Characteristics Unless otherwise noted, VIN = 3V, TA = 25°C. Supply Current vs. Temperature VCC Falling to RESET Propagation Delay vs. Temperature Supply Current (µA) 9 Propagation Delay (µs) 10 VCC = 5V 8 7 6 VCC = 3V 5 4 3 2 VCC = 1V 1 0 -40 -20 0 20 40 60 80 100 160 140 VCC Falling at 1mV/µs V RST - VCC = 100mV 120 100 80 60 40 20 0 -40 -20 Temperature (°C) V CC = 5V 400 350 300 250 200 -20 0 20 40 60 80 100 0.99 0.98 0.97 0.96 0.95 -40 20 40 Temperature (°C) 6 100 -20 0 20 40 60 80 100 Maximum VCC Transient Duration vs. Reset Threshold Overdrive Transient Duration (µs) Normalized Timeout Period 0 80 Temperature (°C) Normalized Watchdog Timeout Period vs. Temperature -20 60 1.05 1.04 1.03 1.02 1.01 1.00 Temperature (°C) 1.05 1.04 1.03 1.02 1.01 1.00 0.99 0.98 0.97 0.96 0.95 -40 40 Normalized Reset Timeout Period vs. Temperature Normalized Timeout Period Propagation Delay (ns) 500 -40 20 Temperature (°C) Manual Reset to RESET Propagation Delay vs. Temperature 450 0 60 80 100 80 70 60 50 40 V RST = 2.63V 30 20 10 0 10 100 1000 Reset Threshold Overdrive (mV) VRST - VCC 3510.2006.03.1.7 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Typical Characteristics Unless otherwise noted, VIN = 3V, TA = 25°C. Bidirectional Pullup Characteristic +5V PASSIVE 4.7kΩ PULLUP 2V/div 74HC05 INPUT RESET, ACTIVE PULLUP 2V/div 4.7k 100pF +5V 74HC05 RESET INPUT 100pF RESET, INPUT 5V/div VCC MR GND Time (200ns/div) 3510.2006.03.1.7 7 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Functional Block Diagram VCC Reset Generator VCC RESET3 RESET4 VREF MR1 WDI2 Watchdog Timer Detector Watchdog Timer GND 1. 2. 3. 4. 8 MR pin available on AAT3510/1/2/5/6/7/9. WDI pin avaliable on AAT3510/1/2/3/4/7/8. RESET pin available on AAT3510/1/3/4/5/6/7/8/9. RESET pin available on AAT3512/3/4/5/6/8/9. 3510.2006.03.1.7 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Factory-Trimmed Reset Thresholds1 and Ordering Information AAT351x IGV - X.XX-X- X-T1 Watchdog Timeout (if applicable) Reset Active Period Threshold Voltage Reset Active Period A: TR(MIN) = 1ms B: TR(MIN) = 20ms C: TR(MIN) = 140ms Watchdog Timeout Period A: TWD(NOM) = 6.3ms B: TWD(NOM) = 102ms C: TWD(NOM) = 1600ms1 VDD Threshold Voltage 2.63: 2.70: 2.80: 2.93: 3.00: 3.08: 3.20: 3.30: 3.40: 3.50: 3.60: 3.70: 3.80: VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) = = = = = = = = = = = = = 2.63V 2.7V 2.8V 2.93V 3.0V 3.08V 3.2V 3.3V 3.4V 3.5V 3.6V 3.7V 3.8V 3.90: 4.00: 4.10: 4.20: 4.38: 4.40: 4.50: 4.63: 4.70: 4.80: 4.90: 5.00: VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) VTH(NOM) = = = = = = = = = = = = 3.9V 4.0V 4.1V 4.2V 4.3V 4.38V 4.5V 4.63V 4.7V 4.8V 4.9V 5.0V 1. Watchdog timeout period C is not available on AAT3513, AAT3514, and AAT3518. 3510.2006.03.1.7 9 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Ordering Information Package Marking1 Part Number (Tape and Reel)2 SOT23-5 HVXYY AAT3510IGV-2.63-C-C-T1 SOT23-5 HUXYY AAT3510IGV-2.93-C-C-T1 SOT23-5 HGXYY AAT3510IGV-3.08-C-C-T1 SOT23-5 HHXYY AAT3510IGV-4.38-C-C-T1 SOT23-5 EWXYY AAT3511IGV-2.63-C-C-T1 SOT23-5 MYXYY AAT3512IGV-2.63-A-C-T1 SOT23-5 AAT3512IGV-2.63-C-C-T1 SOT23-5 HEXYY AAT3515IGV-2.63-C-T1 SOT23-5 HIXYY AAT3515IGV-2.93-B-T1 SOT23-5 KLXYY AAT3515IGV-2.93-C-T1 SOT23-5 JNXYY AAT3515IGV-3.08-C-T1 SOT23-5 KMXYY AAT3515IGV-4.38-C-T1 SOT23-5 MFXYY AAT3515IGV-4.63-C-T1 SOT23-5 INXYY AAT3517IGV-2.63-C-C-T1 SOT23-5 LZXYY AAT3517IGV-2.8-B-C-T1 SOT23-5 IQXYY AAT3517IGV-2.93-C-C-T1 All AnalogicTech products are offered in Pb-free packaging. The term “Pb-free” means semiconductor products that are in compliance with current RoHS standards, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. For more information, please visit our website at http://www.analogictech.com/pbfree. 1. XYY = date and assembly code. 2. Sample stock is generally held on part numbers listed in BOLD. 10 3510.2006.03.1.7 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Package Information SOT23-5 2.85 ± 0.15 1.90 BSC 0.40 ± 0.10 0.075 ± 0.075 0.15 ± 0.07 4° ± 4° 10° ± 5° 1.10 ± 0.20 0.60 REF 1.20 ± 0.25 2.80 ± 0.20 1.575 ± 0.125 0.95 BSC 0.60 REF 0.45 ± 0.15 GAUGE PLANE 0.10 BSC All dimensions in millimeters. © Advanced Analogic Technologies, Inc. AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. AnalogicTech reserves the right to make changes to their products or specifications or to discontinue any product or service without notice. Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. AnalogicTech warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with AnalogicTech’s standard warranty. Testing and other quality control techniques are utilized to the extent AnalogicTech deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed. Advanced Analogic Technologies, Inc. 830 E. Arques Avenue, Sunnyvale, CA 94085 Phone (408) 737-4600 Fax (408) 737-4611 3510.2006.03.1.7 11