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™ 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 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 3 Reset active period options • 1ms, 20ms, 140ms 3 Watchdog timeout period options • 6.3ms, 102ms, 1600ms 4 output options: • Open drain • Inverting • Non-inverting • Bi-directional Low Tempco: 100ppm/°C 5-pin SOT23 package Notebook Computers Portable Electronics Industrial Controllers Intelligent Instruments Critical µP and µC Supply Monitoring Power-On reset circuits Embedded Control Systems Typical Application V DD V CC AAT351x V DD RESET (RESET) WDI RESET INPUT µP I/O LINE GND 3510.2004.08.1.4 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 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) RESET 1 GND 2 MR 3 5 4 5-lead SOT23 (Top View) VCC WDI RESET 1 GND 2 RESET 3 AAT3510 AAT3511 AAT3517 1 GND 2 RESET 3 5 4 AAT3515 AAT3516 AAT3519 2 VCC 4 WDI AAT3513 AAT3514 AAT3518 5-lead SOT23 (Top View) RESET 5 5-lead SOT23 (Top View) VCC MR RESET 1 GND 2 MR 3 5 VCC 4 WDI AAT3512 3510.2004.08.1.4 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Absolute Maximum Ratings (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° 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 V mA mA V/µs °C Note: 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. Thermal Information Symbol ΘJA PD Description Maximum Thermal Resistance1 Maximum Power Dissipation1 Value Units 190 526 °C/W mW Note 1: Mounted on FR4 board Electrical Characteristics (VCC = 2.5V to 5.5V, TA = -40 to +85°C 1 unless otherwise noted. Typical values are at TA=25°C ) Symbol Description VCC ICC VTH TC tRP TRD Conditions Operating Voltage Range TA = -40°C to +85°C AAT3510/1/2/3/4/7/8: MR & WDI unconnected Supply Current AAT3515/6/9: MR unconnected TA = 25°C Reset Threshold Voltage TA = -40 to +85°C Reference Voltage -40°C < TA < +85°C Temp Coeff AAT351xIGV-xx-A-x-T1 Reset Active Timeout AAT351xIGV-xx-B-x-T1 Period AAT351xIGV-xx-C-x-T1 VCC to RESET Delay VCC falling at 1mV/µs 3510.2004.08.1.4 Min Typ 1 VCC VCC VCC VCC = = = = 3.6V 5.5V 3.6V 5.5V 5 6 VTHNOM-1.5% VTH VTHNOM-2.5% VTH ±40 1 20 140 1.4 28 200 40 Max Units 5.5 15 18 15 18 VTHNOM+1.5% VTHNOM+2.5% V µA V ppm/°C 2 40 280 ms µs 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 to +85ºC1 unless otherwise noted. Typical values are at TA=25°C ) Symbol Description Conditions Min Push/Pull RESET Output (AAT3510, 3512, 3513, 3514, 3515, 3516, 3518, 3519) VCC ≥ 1.0V, ISINK = 50µA VCC ≥ 1.2V, ISINK = 100µA VOL RESET Low Output Voltage VCC ≥ 2.7V, ISINK = 1.2mA VCC ≥ 4.5V, ISINK = 3.2mA VCC ≥ 2.7V, ISOURCE = 500µA 0.8 x VCC VOH RESET High Output Voltage VCC ≥ 4.5V, ISOURCE = 800µA VCC - 1.5 VCC ≥ 2.7V, ISINK = 1.2mA RESET Low Output Voltage VCC ≥ 4.5V, ISINK = 3.2mA VOH VCC ≥ 1.8V, ISOURCE = 150µA 0.8 x VCC RESET High Output Voltage VCC ≥ 2.7V, ISOURCE = 500µA 0.8 x VCC VCC ≥ 4.5V, ISOURCE = 800µA VCC - 1.5 Bidirectional RESET Output (AAT3511, 3514, 3516) tS Transition Flip-Flop Setup Time2 VCC = 3.0V, CL = 120pF VCC = 5.0V, CL = 200pF tR RESET Output Rise Time3 VCC = 3.0V, CL = 250pF VCC = 5.0V, CL = 400pF VPTH Active Pullup Enable Threshold VCC = 5.0V 0.4 RESET Active Pullup Current VCC = 5.0V RESET Pullup Resistance 4.2 Open-Drain RESET Output (AAT3517, 3518, 3519) VCC ≥ 1.0V, ISINK = 50µA VCC ≥ 1.2V, ISINK = 100µA VOL RESET Low Output Voltage VCC ≥ 2.7V, ISINK = 1.2mA VCC ≥ 4.5V, ISINK = 3.2mA ID(OFF) Reset Leakage Current Watchdog Input (AAT3510, 3511, 3512, 3513, 3514, 3517, 3518) AAT351xIGV-xx-x-A-T1 4.3 tWD Watchdog Timeout Period AAT351xIGV-xx-x-B-T1 71 4 AAT351xIGV-xx-x-C-T1 1.12 tWDI WDI Minimum Pulse Width VIL = 0.3 x VCC, VIH = 0.7 x VCC VIL WDI Input Threshold 5 0.3 x VCC VIH WDI Input Threshold 5 WDI = VCC, time average IWDI WDI Input Current 6 -20 VWDI = 0, time average 4 Typ Max Units 0.3 0.3 0.3 0.4 V V 0.3 0.4 V 400 ns 333 333 666 666 0.65 20 4.7 5.2 0.3 0.3 0.3 0.4 1.0 6.3 102 1.6 50 120 -15 9.3 153 2.4 0.8 x VCC 160 ns V mA kΩ V µA ms s ns V µA 3510.2004.08.1.4 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Symbol Description Conditions Manual RESET Input (AAT3510, 3511, 3512, 3515, 3516, 3517, 3519) VIL MR Input Threshold VIH MR Input Threshold MR Input Pulse Width MR Glitch Rejection MR Internal Pullup Resistance TA = 25°C MR to Reset Delay VCC = 5V Min Typ Max 0.3 x VCC 0.7 x VCC 1 35 100 52 230 75 Units V µs ns kΩ ns Note 1: Over-temperature limits are guaranteed by design, not production tested. Note 2: This is the minimum time RESET must be held low by an external pulldown source to set the active pullup flip-flop. Note 3: Measured from RESET VOL to (0.8 x VCC), Open Circuit Output. Note 4: Watchdog timeout period C is not available on AAT3513, AAT3514, and AAT3518. Note 5: WDI is internally serviced within the watchdog period if WDI is left unconnected. Note 6: 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. 3510.2004.08.1.4 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 10 Supply Current (µA) 9 Vcc=5V 8 7 6 Vcc=3V 5 4 3 2 Vcc=1V 1 0 -40 -20 0 20 40 60 80 100 Reset Propagation Delay (µs) Vcc Falling To RESET Propagation Delay vs. Temperature 160 140 Vcc falling at 1mV/µs V RST -Vcc=100mV 120 100 80 60 40 20 0 -40 -20 Temperature (°C) 400 350 300 250 200 0 20 40 60 80 100 Normalized Timeout Period Propagation Delay (ns) V CC=5V -20 1.05 1.04 1.03 1.02 1.01 1.00 0.99 0.98 0.97 0.96 0.95 -40 -20 Temperature (°C) 0 20 40 Temperature (°C) 6 80 100 0 20 40 60 80 100 Maximum VCC Transient Duration vs. Reset Threshold Overdrive Transient Duration (µs) Normalized Timeout Period -20 60 Temperature (°C) Normalized Watchdog Timeout Period vs. Temperature 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 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 3510.2004.08.1.4 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 74HC05 4.7k 4.7kΩ INPUT 100pF PULLUP 2V/div RESET, ACTIVE PULLUP 2V/div +5V 74HC05 RESET INPUT 100pF RESET, INPUT 5V/div VCC MR GND 200ns/div 3510.2004.08.1.4 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 Note 1: MR pin available on AAT3510/1/2/5/6/7/9 Note 2: WDI pin avaliable on AAT3510/1/2/3/4/7/8 Note 3: RESET pin available on AAT3510/1/3/4/5/6/7/8/9 Note 4: RESET pin available on AAT3512/3/4/5/6/8/9 8 3510.2004.08.1.4 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer Factory Trimmed Reset Thresholds* 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) = 1600ms* 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 * Watchdog timeout period C is not avaliable on AAT3513, AAT3514 and AAT3518. 3510.2004.08.1.4 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) 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 JOXYY AAT3512IGV-2.63-C-C-T1 SOT23-5 HFXYY AAT3513IGV-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 Note: Sample stock is held on part numbers listed in bold. Note 1: XYY = date and assembly code. 10 3510.2004.08.1.4 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. 3510.2004.08.1.4 11 AAT3510/1/2/3/4/5/6/7/8/9 Micropower µP Reset with Watchdog Timer 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, and advise customers 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. 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