AME8500AEFTCD27

AME, Inc. AME8500 / 8501 µProcessor Supervisory n General Description The AME8500 family allows the user to customize the CPU reset function without any external components. The user has a large choice of reset voltage thresholds, reset time intervals, and output driver configurations, all of which are preset at the factory. Each wafer is trimmed to the customer's specifications. These circuits monitor the power supply voltage of µP based systems. When the power supply voltage drops below the voltage threshold a reset is asserted immediately (within an interval TD1). The reset remains asserted after the supply voltage rises above the voltage threshold for a time interval, TD2 . The reset output may be either active high (RESET) or active low (RESETB). The reset output may be configured as either push/pull or open drain. The state of the reset output is guaranteed to be correct for supply voltages greater than 1V. The AME8501 includes all the above functionality plus an overtemperature shutdown function. When the ambient temperature exceeds 80oC a reset is asserted and remains asserted until the temperature falls below 60oC. Space saving SOT23 packages and micropower quiescent current (1.8V VDD >VTH (MAX) ISOURCE=0.15mA, 1.8V>=VDD >1.0V ISOURCE=0.5mA, VDD 1.8V ISOURCE=0.15mA, 1.8V>=VDD >1.0V VDD = V TH - 100mV, TA= -40 ~ 85oC Version A Version D Reset Timeout Period* TD2 TA= -40 ~ 85 C o o o o Typ Max 5.5 Units V 1 5.5 3.0 5.0 V THNOM + 1.5% V THNOM + 2.0% 20 30 mV ppm µA Supply Current IDD mV VTHNOM - 2.0% VHY ST VRELEASE - VTH , note1 0.5 V 0.8VDD V 40 0.5 15 80 140 300 1.5 30 150 210 440 80 20 200 5 50 230 500 600 µS mS mS mS mS mS o Version E Version F Version K Temperature Shutdown Temperature Shutdown Hysteresis TOFF THY S AME8501 only AME8501 only C C o Note1:The data based on VTH=2.7V part type. 9 AME, Inc. AME8500 / 8501 µProcessor Supervisory n Timing Diagram VRelease VTH VDD TD2 50% RESET TD1 50% TD2 50% RESETB TD1 50% n Applications Information Supply Transients These devices have a certain immunity to fast negative going transients. In the following pages the graph titled “Glitch Rejection” indicates the maximum allowable glitch amplitude and duration to avoid triggering an unintended reset. As shown in the graph shorter transients can have larger amplitudes without triggering resets. Glitch Rejection 140 120 220 Reset Time vs. Temperature 215 Glitch Duration (µ S) Reset Time (mS) 100 80 60 40 20 0 0.01 0.1 1 210 205 AME8500AEETAF26 200 195 190 -45 -5 25 55 85 115 Glitch Amplitude (V) Temperature ( oC) 10 AME, Inc. AME8500 / 8501 IDD vs. Temperature 2.35 2.650 2.648 µProcessor Supervisory Reset VTH vs. Temperature Supply Current @ 5V (uA) 2.30 2.646 2.644 Reset Vth (V) 2.25 2.642 2.640 2.638 2.636 2.634 2.632 2.20 AME8500AEETAF26 AME8500AEETAF26 2.15 2.10 -45 -5 25 55 85 115 2.630 -45 -5 25 55 85 115 Temperature (oC) Temperature (oC) IDD vs. VDD 2 43 TD1 Delay vs. Temperature 1.6 42 85OC -40OC IDD (uA) 1.2 TD2 Delay (uS) 41 0O C 0.8 40 39 0.4 38 0 0 1 2 3 4 5 37 -40 -20 0 20 40 60 80 100 VDD (V) Temperature (oC) Threshold Hysteresis vs. Temperature 0.5 0.265 0.260 0.4 Reset VOL vs. Temperature Reset VOL @ 0.8mA (V) Hysteresis (% of VTH) 0.255 0.250 0.245 0.240 0.235 0.3 0.2 AME8500AEETAF26 0.230 0.225 0.1 0 -40 -20 0 20 40 60 80 100 0.220 -45 -5 25 55 85 115 Temperature (oC) Temperature ( oC) 11 AME, Inc. AME8500 / 8501 µProcessor Supervisory n Package Dimension SOT-23 Top View D Side View SYMBOLS C MILLIMETERS MIN MAX 1.40 0.15 0.50 0.25 3.10 1.80 INCHES MIN 0.0394 0.0000 0.0138 0.0035 0.1063 0.0551 MAX 0.0551 0.0059 0.0197 0.0098 0.1220 0.0709 A A1 b E H L 1.00 0.00 0.35 0.09 2.70 1.40 C D E e £c 1 e H L è1 1.90 BSC 2.40 3.00 0.0748 BSC 0.09449 0.11811 0.0138BSC 0o 10 o Front View 0.35BSC 0o 10o SOT-23-L SYMBOLS Top View D Side View C A1 b A MILLIMETERS MIN MAX 1.30 0.50 0.25 3.10 1.80 INCHES MIN 0.0394 0.0138 0.0035 0.1063 0.0551 MAX 0.0512 0.0197 0.0098 0.1220 0.0709 A+A1 b C 1.00 0.35 0.09 2.70 1.40 L D E e H L E H 1.90 BSC 2.40 3.00 0.0748 BSC 0.09449 0.11811 0.0138BSC o 0.35BSC 0 o e £c 1 è1 10 0o 10o Front View 12 A1 b A AME, Inc. AME8500 / 8501 µProcessor Supervisory n Package Dimension SOT-89 Top View D D1 H POLISH Side View SYMBOLS A A1 E MILLIMETERS MIN 1.39 INCHES MIN MAX MAX 1.60 0.05472 0.06299 0.0315REF 0.01378 0.01732 0.17283 0.1811 0.8REF 0.35 4.39 1.35 2.28 0.44 4.60 1.83 3.60 C D D1 E C A1 0.05315 0.07205 0.08976 0.14173 0.1181REF 0.0276REF 0.0590REF S1 e Front View MATTE FINISH e H S1 3.00REF 0.70REF 1.50REF A POLISH SOT-25 Top View D L Side View SYMBOLS A A1 b D E e H L è1 A MILLIMETERS MIN 0.00 0.30 2.70 1.40 INCHES MIN 0.0000 0.0118 0.1063 0.0551 MAX 0.15 0.55 3.10 1.80 MAX 0.0059 0.0217 0.1220 0.0709 1.20REF 0.0472REF H E S1 e £c 1 1.90 BSC 2.60 3.00 0.07480 BSC 0.10236 0.11811 0.0146BSC o 0.37BSC 0 o Front View 10 0o 10o S1 0.95BSC 0.0374BSC b A1 13 www.ame.com.tw E-Mail: sales@ame.com.tw Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. © AME, Inc. , June 2003 Document: 2007-DS8500/8501-L Corporate Headquarter AME, Inc. 2F, 189 Kang-Chien Road, Nei-Hu Dist. Taipei 114 Taiwan, R.O.C. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989 U.S.A. Subsidiary Analog Microelectronics, Inc. 3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2046 Tel : (408) 988-2388 Fax: (408) 988-2489