AME µProcessor Supervisory AME8570 n General Description The AME8570 family allows the user to customize the CPU reset function without any external components. The user has serveral choice of reset voltage thresholds, reset time intervals, and output driver configurations, all of which are preset at the factory. 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 only when supply voltage is greater than 1V. n Functional Block Diagram AME8570 Push-Pull RESET/ RESETB VIN R1 n Features l Small Packages : SC-70, SOT-23, SOT-143 R2 V REF N1 GND AME8570 Open-Drain RESETB VIN R1 I1 RESET/ RESETB Delay R2 VREF N1 GND AME8570 Push-Pull RESET/ RESETB with MRB MRB VIN l Tight Voltage Threshold Tolerance : R1 ± 1.50% I1 l Wide Temperature Range : -40OC to +85OC P1 RESET/ RESETB Delay l Low Quiescent Current < 3.0 µA R2 l Manual Reset Input Option l Green Products Meet RoHS Standards RESET/ RESETB Delay The AME8570 also provide a reset manually by pulling the MRB input to ground. Space saving SC-70 package and micropower quiescent current ( < 3.0µA ) make this family a natural for portable battery powered equipment. P1 I1 V REF N1 GND AME8570 Open-Drain RESETB with MRB MRB n Applications VIN l Portable Electronics R1 I1 l Power Supplies l Computer Peripherals l Data Acquisition Systems l Applications using CPUs l Consumer Electronics Rev.C.02 RESET/ RESETB Delay R2 V REF N1 GND 1 AME µProcessor Supervisory AME8570 n Typical Operating Circuit VIN R*PULL-UP V IN µP PUSH BUTTON RESET / RESETB SWITCH MRB GND RESET INPUT GND Note: * External pull-up resistor is required if open-drain output is used. 10KΩ is recommended. n Pin Configuration SOT-23/TSOT-23 Top View SC-70-4 Top View AME8570AEET 3 4 3 1. GND 1. GND 2. RESET/RESETB AME8570 3. IN AME8570AEIU 2. RESET/RESETB AME8570 3. MRB 4. IN 1 1 2 2 * Die Attach: Non-Conductive Epoxy SOT-23/TSOT-23 Top View * Die Attach: Non-Conductive Epoxy SOT-23/TSOT-23 Top View 3 AME8570BEET 3 AME8570CEET 1. RESET/RESETB 1. RESET/RESETB 2. GND AME8570 1 2 2 3. IN * Die Attach: Non-Conductive Epoxy 2. IN AME8570 1 2 3. GND * Die Attach: Conductive Epoxy Rev. C.02 AME µProcessor Supervisory AME8570 n Pin Configuration SOT-143 Top View 3 4 AME8570AE4U 1. GND 2. RESET/RESETB AME8570 3. MRB 4. IN 1 2 * Die Attach: Conductive Epoxy n Pin Description AME8570AEET/AME8570BEET/AME8570CEET Pin Name GND RESET/RESETB IN Rev.C.02 Pin Description Ground This pin can be ordered as RESET or RESETB. Reset is active high. RESETB is active low. It is also available with an open-drain or push-pull output. Positive power supply. A reset is asserted after this voltage drops below a predetermined level. After VIN rises above that level the reset output remains asserted until the end of the reset timeout period. 3 AME µProcessor Supervisory AME8570 n Pin Description AME8570AEIU / AME8570AE4U Pin Name GND Ground RESET/RESETB This pin can be ordered as RESET or RESETB. Reset is active high. RESETB is active low. It is also available with an open-drain or push-pull output. MRB Manual RESET. Active low. Pulling this pin low forces a reset. After a low to high transition reset, remains asserted for exactly one reset timeout period. This pin is internally pulled high. The pin is floating or tied to VIN , if it is unused. IN 4 Pin Description Positive power supply. A reset is asserted after this voltage drops below a predetermined level. After VIN rises above that level the reset output remains asserted until the end of the reset timeout period. Rev. C.02 AME µProcessor Supervisory AME8570 n Ordering Information AME8570 x x x x x x xx x Special Feature VIN Threshold Voltage (V TH) Reset Time (TD2NOM ) Output Driver Option Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration Pin Configuration Operating Ambient Temperature Range A E : -40O C to +85 OC (SOT-23) (TSOT-23) B (SOT-23) (TSOT-23) C (SOT-23) (TSOT-23) 1. GND 2. RESET/ RESETB 3. IN Package Type E: SOT-2X I: SC-70 4: SOT-143 Number of Pins T: 3 U: 4 Output Options A: RESETB/PP B: RESETB/OD C: RESET/PP 1. Reset/ ResetB 2. GND 3. IN 1. Reset/ ResetB 2. IN 3. GND (RESET=Active High) (RESETB=Active Low) (PP=Push-pull out) (OD=Open-Drain output) A (SC-70-4) A (SOT-143) Reset Time (TD2NOM ) A: 1.5ms E: 150ms F: 210ms VIN Threshold Voltage (V TH ) 16: 18: 20: 21: 23: 26: 27: 28: 29: 30: 31: 40: 44: 45: 46: VTH = 1.60V VTH = 1.80V VTH = 2.00V VTH = 2.10V VTH = 2.32V VTH = 2.63V VTH = 2.70V VTH = 2.80V VTH = 2.93V VTH = 3.00V VTH = 3.08V VTH = 4.00V VTH = 4.38V VTH = 4.50V VTH = 4.63V Special Feature Y: Lead free & Low profile Z: Lead free 1. GND 2. RESET/ RESETB 3. MRB 4. IN 1. GND 2. RESET/ RESETB 3. MRB 4. IN Rev.C.02 5 AME µProcessor Supervisory AME8570 n Ordering Information Part Number Marking* Detect Voltage Package Operating Ambient Temperature Range AME8570AEETAA16Z BMCww 1.60V SOT-23 -40oC to +85oC AME8570AEETAA16Y BMCww 1.60V TSOT-23 -40oC to +85oC AME8570BEETAA16Z BMDww 1.60V SOT-23 -40oC to +85oC AME8570BEETAA16Y BMDww 1.60V TSOT-23 -40oC to +85oC AME8570CEETAA16Z BMEww 1.60V SOT-23 -40oC to +85oC AME8570CEETAA16Y BMEww 1.60V TSOT-23 -40oC to +85oC AME8570AEIUAA16Z BMGw 1.60V SC-70-4 -40oC to +85oC AME8570AEETBE20Z BMHww 2.00V SOT-23 -40oC to +85oC AME8570AEETBE20Y BMHww 2.00V TSOT-23 -40oC to +85oC AME8570BEETBE20Z BMIww 2.00V SOT-23 -40oC to +85oC AME8570BEETBE20Y BMIww 2.00V TSOT-23 -40oC to +85oC AME8570CEETBE20Z BMJww 2.00V SOT-23 -40oC to +85oC AME8570CEETBE20Y BMJww 2.00V TSOT-23 -40oC to +85oC AME8570AEIUBE20Z BMLw 2.00V SC-70-4 -40oC to +85oC AME8570AEETAE21Z BMMww 2.10V SOT-23 -40oC to +85oC AME8570AEETAE21Y BMMww 2.10V TSOT-23 -40oC to +85oC AME8570BEETAE21Z BMNww 2.10V SOT-23 -40oC to +85oC AME8570BEETAE21Y BMNww 2.10V TSOT-23 -40oC to +85oC AME8570CEETAE21Z BMOww 2.10V SOT-23 -40oC to +85oC AME8570CEETAE21Y BMOww 2.10V TSOT-23 -40oC to +85oC AME8570AEIUAE21Z BMQw 2.10V SC-70-4 -40oC to +85oC Note: ww & w represents the date code and pls refer to the Date Code Rule on Package Dimension. * A line on top of the first letter represents lead free plating such as BMCww. Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage or package type. 6 Rev. C.02 AME µProcessor Supervisory AME8570 n Ordering Information (Contd.) Part Number Marking* Detect Voltage Package Operating Ambient Temperature Range AME8570AEETAF23Z BJOww 2.32V SOT-23 -40oC to +85oC AME8570AEETAF23Y BJOww 2.32V TSOT-23 -40oC to +85oC AME8570BEETAF23Z BMRww 2.32V SOT-23 -40oC to +85oC AME8570BEETAF23Y BMRww 2.32V TSOT-23 -40oC to +85oC AME8570CEETAF23Z BMSww 2.32V SOT-23 -40oC to +85oC AME8570CEETAF23Y BMSww 2.32V TSOT-23 -40oC to +85oC AME8570AEIUAF23Z BJQw 2.32V SC-70-4 -40oC to +85oC AME8570AEETAE26Z BLYww 2.63V SOT-23 -40oC to +85oC AME8570AEETAE26Y BLYww 2.63V TSOT-23 -40oC to +85oC AME8570BEETAE26Z BMTww 2.63V SOT-23 -40oC to +85oC AME8570BEETAE26Y BMTww 2.63V TSOT-23 -40oC to +85oC AME8570CEETAE26Z BMUww 2.63V SOT-23 -40oC to +85oC AME8570CEETAE26Y BMUww 2.63V TSOT-23 -40oC to +85oC AME8570AEIUAE26Z BMWw 2.63V SC-70-4 -40oC to +85oC AME8570AEETAF26Z BJRww 2.63V SOT-23 -40oC to +85oC AME8570AEETAF26Y BJRww 2.63V TSOT-23 -40oC to +85oC AME8570BEETAF26Z BMXww 2.63V SOT-23 -40oC to +85oC AME8570BEETAF26Y BMXww 2.63V TSOT-23 -40oC to +85oC AME8570CEETAF26Z BMYww 2.63V SOT-23 -40oC to +85oC AME8570CEETAF26Y BMYww 2.63V TSOT-23 -40oC to +85oC AME8570AEIUAF26Z BJTw 2.63V SC-70-4 -40oC to +85oC Rev.C.02 7 AME µProcessor Supervisory AME8570 n Ordering Information (Contd.) 8 Part Number Marking* Detect Voltage Package Operating Ambient Temperature Range AME8570AEETAA27Z BMZww 2.70V SOT-23 -40oC to +85oC AME8570AEETAA27Y BMZww 2.70V TSOT-23 -40oC to +85oC AME8570BEETAA27Z BLZww 2.70V SOT-23 -40oC to +85oC AME8570BEETAA27Y BLZww 2.70V TSOT-23 -40oC to +85oC AME8570CEETAA27Z BNAww 2.70V SOT-23 -40oC to +85oC AME8570CEETAA27Y BNAww 2.70V TSOT-23 -40oC to +85oC AME8570AEIUAA27Z BNCw 2.70V SC-70-4 -40oC to +85oC AME8570AEETAF27Z BNDww 2.70V SOT-23 -40oC to +85oC AME8570AEETAF27Y BNDww 2.70V TSOT-23 -40oC to +85oC AME8570BEETAF27Z BNEww 2.70V SOT-23 -40oC to +85oC AME8570BEETAF27Y BNEww 2.70V TSOT-23 -40oC to +85oC AME8570CEETAF27Z BNFww 2.70V SOT-23 -40oC to +85oC AME8570CEETAF27Y BNFww 2.70V TSOT-23 -40oC to +85oC AME8570AEIUAF27Z BNHw 2.70V SC-70-4 -40oC to +85oC AME8570AEETBA28Z BNIww 2.80V SOT-23 -40oC to +85oC AME8570AEETBA28Y BNIww 2.80V TSOT-23 -40oC to +85oC AME8570BEETBA28Z BMAww 2.80V SOT-23 -40oC to +85oC AME8570BEETBA28Y BMAww 2.80V TSOT-23 -40oC to +85oC AME8570CEETBA28Z BNJww 2.80V SOT-23 -40oC to +85oC AME8570CEETBA28Y BNJww 2.80V TSOT-23 -40oC to +85oC AME8570AEIUBA28Z BNLw 2.80V SC-70-4 -40oC to +85oC Rev. C.02 AME µProcessor Supervisory AME8570 n Ordering Information (Contd.) Part Number Marking* Detect Voltage Package Operating Ambient Temperature Range AME8570AEETAE29Z BNMww 2.93V SOT-23 -40oC to +85oC AME8570AEETAE29Y BNMww 2.93V TSOT-23 -40oC to +85oC AME8570BEETAE29Z BNNww 2.93V SOT-23 -40oC to +85oC AME8570BEETAE29Y BNNww 2.93V TSOT-23 -40oC to +85oC AME8570CEETAE29Z BNOww 2.93V SOT-23 -40oC to +85oC AME8570CEETAE29Y BNOww 2.93V TSOT-23 -40oC to +85oC AME8570AEIUAE29Z BNQw 2.93V SC-70-4 -40oC to +85oC AME8570AEETAF29Z BJUww 2.93V SOT-23 -40oC to +85oC AME8570AEETAF29Y BJUww 2.93V TSOT-23 -40oC to +85oC AME8570BEETAF29Z BNRww 2.93V SOT-23 -40oC to +85oC AME8570BEETAF29Y BNRww 2.93V TSOT-23 -40oC to +85oC AME8570CEETAF29Z BNSww 2.93V SOT-23 -40oC to +85oC AME8570CEETAF29Y BNSww 2.93V TSOT-23 -40oC to +85oC AME8570AEIUAF29Z BJWw 2.93V SC-70-4 -40oC to +85oC AME8570AEETBF29Z BNTww 2.93V SOT-23 -40oC to +85oC AME8570AEETBF29Y BNTww 2.93V TSOT-23 -40oC to +85oC AME8570BEETBF29Z BNUww 2.93V SOT-23 -40oC to +85oC AME8570BEETBF29Y BNUww 2.93V TSOT-23 -40oC to +85oC AME8570CEETBF29Z BMBww 2.93V SOT-23 -40oC to +85oC AME8570CEETBF29Y BMBww 2.93V TSOT-23 -40oC to +85oC AME8570AEIUBF29Z BKZw 2.93V SC-70-4 -40oC to +85oC Rev.C.02 9 AME µProcessor Supervisory AME8570 n Ordering Information (Contd.) 10 Part Number Marking* Detect Voltage Package Operating Ambient Temperature Range AME8570AEETCF29Z BJXww 2.93V SOT-23 -40oC to +85oC AME8570AEETCF29Y BJXww 2.93V TSOT-23 -40oC to +85oC AME8570BEETCF29Z BNWww 2.93V SOT-23 -40oC to +85oC AME8570BEETCF29Y BNWww 2.93V TSOT-23 -40oC to +85oC AME8570CEETCF29Z BNXww 2.93V SOT-23 -40oC to +85oC AME8570CEETCF29Y BNXww 2.93V TSOT-23 -40oC to +85oC AME8570AEIUCF29Z BJZw 2.93V SC-70-4 -40oC to +85oC AME8570AEETAF31Z BKAww 3.08V SOT-23 -40oC to +85oC AME8570AEETAF31Y BKAww 3.08V TSOT-23 -40oC to +85oC AME8570BEETAF31Z BNYww 3.08V SOT-23 -40oC to +85oC AME8570BEETAF31Y BNYww 3.08V TSOT-23 -40oC to +85oC AME8570CEETAF31Z BNZww 3.08V SOT-23 -40oC to +85oC AME8570CEETAF31Y BNZww 3.08V TSOT-23 -40oC to +85oC AME8570AEIUAF31Z BKCw 3.08V SC-70-4 -40oC to +85oC AME8570AEETBF31Z BKDww 3.08V SOT-23 -40oC to +85oC AME8570AEETBF31Y BKDww 3.08V TSOT-23 -40oC to +85oC AME8570BEETBF31Z BOAww 3.08V SOT-23 -40oC to +85oC AME8570BEETBF31Y BOAww 3.08V TSOT-23 -40oC to +85oC AME8570CEETBF31Z BOBww 3.08V SOT-23 -40oC to +85oC AME8570CEETBF31Y BOBww 3.08V TSOT-23 -40oC to +85oC AME8570AEIUBF31Z BKFw 3.08V SC-70-4 -40oC to +85oC Rev. C.02 AME µProcessor Supervisory AME8570 n Ordering Information (Contd.) Part Number Marking* Detect Voltage Package Operating Ambient Temperature Range AME8570AEETBE31Z BOCww 3.08V SOT-23 -40oC to +85oC AME8570AEETBE31Y BOCww 3.08V TSOT-23 -40oC to +85oC AME8570BEETBE31Z BODww 3.08V SOT-23 -40oC to +85oC AME8570BEETBE31Y BODww 3.08V TSOT-23 -40oC to +85oC AME8570CEETBE31Z BOEww 3.08V SOT-23 -40oC to +85oC AME8570CEETBE31Y BOEww 3.08V TSOT-23 -40oC to +85oC AME8570AEIUBE31Z BOGw 3.08V SC-70-4 -40oC to +85oC AME8570AEETCF31Z BOHww 3.08V SOT-23 -40oC to +85oC AME8570AEETCF31Y BOHww 3.08V TSOT-23 -40oC to +85oC AME8570BEETCF31Z BOIww 3.08V SOT-23 -40oC to +85oC AME8570BEETCF31Y BOIww 3.08V TSOT-23 -40oC to +85oC AME8570CEETCF31Z BOJww 3.08V SOT-23 -40oC to +85oC AME8570CEETCF31Y BOJww 3.08V TSOT-23 -40oC to +85oC AME8570AEIUCF31Z BOLw 3.08V SC-70-4 -40oC to +85oC AME8570AEETAF40Z BOMww 4.00V SOT-23 -40oC to +85oC AME8570AEETAF40Y BOMww 4.00V TSOT-23 -40oC to +85oC AME8570BEETAF40Z BONww 4.00V SOT-23 -40oC to +85oC AME8570BEETAF40Y BONww 4.00V TSOT-23 -40oC to +85oC AME8570CEETAF40Z BOOww 4.00V SOT-23 -40oC to +85oC AME8570CEETAF40Y BOOww 4.00V TSOT-23 -40oC to +85oC AME8570AEIUAF40Z BOQw 4.00V SC-70-4 -40oC to +85oC Rev.C.02 11 AME µProcessor Supervisory AME8570 n Ordering Information (Contd.) 12 Part Number Marking* Detect Voltage Package Operating Ambient Temperature Range AME8570AEETAF44Z BORww 4.38V SOT-23 -40oC to +85oC AME8570AEETAF44Y BORww 4.38V TSOT-23 -40oC to +85oC AME8570BEETAF44Z BOSww 4.38V SOT-23 -40oC to +85oC AME8570BEETAF44Y BOSww 4.38V TSOT-23 -40oC to +85oC AME8570CEETAF44Z BOTww 4.38V SOT-23 -40oC to +85oC AME8570CEETAF44Y BOTww 4.38V TSOT-23 -40oC to +85oC AME8570AEIUAF44Z BOVw 4.38V SC-70-4 -40oC to +85oC AME8570AEETBF44Z BOWww 4.38V SOT-23 -40oC to +85oC AME8570AEETBF44Y BOWww 4.38V TSOT-23 -40oC to +85oC AME8570BEETBF44Z BOXww 4.38V SOT-23 -40oC to +85oC AME8570BEETBF44Y BOXww 4.38V TSOT-23 -40oC to +85oC AME8570CEETBF44Z BOYww 4.38V SOT-23 -40oC to +85oC AME8570CEETBF44Y BOYww 4.38V TSOT-23 -40oC to +85oC AME8570AEIUBF44Z BPAw 4.38V SC-70-4 -40oC to +85oC AME8570AEETAF46Z BKGww 4.63V SOT-23 -40oC to +85oC AME8570AEETAF46Y BKGww 4.63V TSOT-23 -40oC to +85oC AME8570BEETAF46Z BPBww 4.63V SOT-23 -40oC to +85oC AME8570BEETAF46Y BPBww 4.63V TSOT-23 -40oC to +85oC AME8570CEETAF46Z BPCww 4.63V SOT-23 -40oC to +85oC AME8570CEETAF46Y BPCww 4.63V TSOT-23 -40oC to +85oC AME8570AEIUAF46Z BKIw 4.63V SC-70-4 -40oC to +85oC Rev. C.02 AME µProcessor Supervisory AME8570 n Ordering Information (Contd.) Part Number Marking* Detect Voltage Package Operating Ambient Temperature Range AME8570AEETCF46Z BKJww 4.63V SOT-23 -40oC to +85oC AME8570AEETCF46Y BKJww 4.63V TSOT-23 -40oC to +85oC AME8570BEETCF46Z BPDww 4.63V SOT-23 -40oC to +85oC AME8570BEETCF46Y BPDww 4.63V TSOT-23 -40oC to +85oC AME8570CEETCF46Z BPEww 4.63V SOT-23 -40oC to +85oC AME8570CEETCF46Y BPEww 4.63V TSOT-23 -40oC to +85oC AME8570AEIUCF46Z BKLw 4.63V SC-70-4 -40oC to +85oC AME8570BEETBF27Z BTSww 2.70V SOT-23 -40oC to +85oC AME8570AEETAE18Z BUAww 1.80V SOT-23 -40oC to +85oC AME8570AEIUBA27Z BVOw 2.70V SC-70-4 -40oC to +85oC AME8570BEETBF30Z CARww 3.00V SOT-23 -40oC to +85oC AME8570AE4UAF29Z CBBww 2.93V SOT-143 -40oC to +85oC Rev.C.02 13 AME µProcessor Supervisory AME8570 n Absolute Maximum Ratings Parameter Maximum Unit 6 V 20 mA Supply Voltage Input Current, VIN Output Current, RESET, RESETB B* ESD Classification Caution: Stress above the listed in absolute maximum ratings may cause permanent damage to the device. * HBM B: 2000V ~ 3999V n Recommended Operating conditions Parameter Symbol Rating Unit Ambient Temperature Range TA - 40 to +85 Junction Temperature Range TJ - 40 to +125 Storage Temperature Range TSTG - 65 to +150 O C n Thermal Information Parameter Thermal Resistance* (Junction to Case) Package Die Attach Symbol Maximum Conductive Epoxy SOT-23 TSOT-23 Non-Conductive Epoxy 81 θJC SOT-23 TSOT-23 Internal Power Dissipation SOT-23 TSOT-23 Non-Conductive Epoxy Solder Iron (10 Sec) ** C/W o C/W 260 θJA 280 Conductive Epoxy Non-Conductive Epoxy o 140 Conductive Epoxy Thermal Resistance (Junction to Ambient) Unit 400 PD mW 400 350 o C * Measure θJC on center of molding compound if IC has no tab. ** MIL-STD-202G 210F 14 Rev. C.02 AME µProcessor Supervisory AME8570 n Electrical Specifications TA = 25OC unless otherwise noted. Parameter VIN Range Supply Current RESET Threshold Symbol Test Condition Min VRANGE T A = -40 o C to +85o C 1 VIN = VTH*1.10 MRB unconnected IIN o RESETB Output Voltage High RESET Output Voltage Low VIN to RESET Delay RESET Timeout Period MRB Input Threshold MRB Pulse Width µA 5 T A = -40 C to +85 C VTH -2% VTH +2% VRelease - V TH 10 ISOURCE = 0.15mA, 1.8V >= VIN > 1.0V ISOURCE = 0.5mA, VIN > 1.8V T D2 I SINK = 1.2mA, V IN > VTH (MAX) T J = -40 C to +85 C o o T A = -40 C to +85 C IL MRB IH 60 V mV V ISOURCE = 0.15mA, 1.8V >= VIN > 1.0V VIN < VTH (MIN) o 30 0.8VI N 0.2 o VIN = V TH -100mV; TA = -40oC to +85oC T D1 MRB o ISOURCE = 0.5mA, VIN > 1.8V V IN < VTH (MIN) VOL V VTH +1.5% VOH RESETB Output Voltage Low 5.5 VTH -1.5% V IN > VTH (MAX) RESET Output Voltage High Units o VTH VHYST Max 3 V IN = VTH*1.10, TA=-40 C~+85 C MRB unconnected o Hysteresis Range Typ V µS 40 Version A 0.5 1.5 5 mS Version E 80 150 230 mS Version F 140 210 500 mS VI N = VTH x 1.2 0.7 0.8VI N V µS 1 MRB Noise Immunity (pulse width with no reset) 100 nS MRB to RESET Delay 500 nS MRB Pull Up Resistance Rev.C.02 80 120 KΩ 15 AME µProcessor Supervisory AME8570 n Timing Diagram VRelease VT H V IN TD2 50% TD1 50% TD1 50% RESET TD2 50% RESETB 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 Reset Time vs. Temperature 600 140 550 500 Reset Time (ms) Glitch Duration (µS) 120 100 80 60 40 400 350 300 250 20 200 0 0.01 0.1 Glitch Amplitude (V) 16 450 1 150 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 95 105 115 Temperature ( oC) Rev. C.02 AME AME8570 µProcessor Supervisory n Detailed Description The AME8570 are designed to interface with the reset input of a microprocessor and to prevent code-execution errors due to power up, power down, and other power supply errors. Reset Output Each output pin in the family can be configured to be either push-pull or open-drain. In addition each output may be either active high or active low. Active high reset outputs are denoted as RESET. Active low reset outputs are denoted as RESETB. The selection guide on this data sheet shows all possible combinations of output driver configuration. A reset will be asserted if any of two things happen: 1) VIN drops below the threshold (V TH) 2) The MRB pin is pulled low. The reset will remain asserted for the prescribed reset interval after: 1) VIN rises above the threshold (V TH) 2) MRB goes high Manual Reset Input The AME8570 feature a manual reset feature (MRB). A logic low on the MRB pin asserts a reset. The reset remains asserted as long as the MRB pin remains low. After the MRB pin transitions to a high state the reset remains asserted for the prescribed reset interval (TD2). The MRB pin is internally pulled up to VIN by a 100K resistor. It is internally debounced to reject switching transients. The MRB pin is ESD protected by diodes connected to VIN and GND. So the MRB pin should never be driven higher than VIN or lower than GND. Glitch Rejection The AME8570 family will reject negative going transients on the VIN line to some extent. The smaller the duration of the transient the larger its amplitude may be without triggering a reset. The "Glitch Rejection" chart in the graphs section of this datasheet shows the relation between glitch amplitude and allowable glitch duration to avoid unintended resets. Accurate Output State at Low VIN With VIN voltage on the order of the MOS transistor threshold (<1.0V) the outputs of the AME8570 may become undefined. For parts with active low output (RESETB) a resistor placed between RESETB and GND on the order of 100K will ensure that the RESETB output stays low when VIN is lower than the threshold voltage of the part. In a like manner a resistor on the order of 100K when placed between RESET and VIN will ensure parts with active high output (RESET) will remain high when VIN is lower than the threshold voltage of the part. Rev.C.02 17 AME µProcessor Supervisory AME8570 n Characterization Curve Reset VTH vs. Temperature IIN vs. Temperature 2.70 2.69 3.0 2.68 AME8570AEETAF26 Reset Vth (V) Supply Current @ 5V (µA) 3.5 2.5 2.0 1.5 2.66 2.65 2.64 2.63 2.62 2.61 1.0 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 2.60 -45 -35 -25 -15 -5 95 105 115 Temperature (oC) Threshold Hysteresis vs. Temperature 0.030 2.8 2.4 0.025 85oC 1.6 Hysteresis (V) 2.0 0oC 1.2 -40oC 0.8 0.020 0.015 0.010 0.005 0.4 0.0 0.0 5 15 25 35 45 55 65 75 85 95 105 115 Temperature (oC) IIN vs. VIN IIN (µA) AME8570AEETAF26 2.67 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VIN (V) 0.000 -40 -20 0 20 40 60 80 Temperature (oC) Reset VOL vs. Temperature 0.034 Reset VOL @ 0.8mA (V) 0.032 0.030 0.028 AME8570AEETAF26 0.026 0.024 0.022 0.020 0.018 0.016 0.014 0.012 0.010 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 95 105115 Temperature (oC) 18 Rev. C.02 AME µProcessor Supervisory AME8570 n Date Code Rule For SOT-23 / SOT-143 Package Marking Date Code Year A A A W W xxx0 A A A W W xxx1 A A A W W xxx2 A A A W W xxx3 A A A W W xxx4 A A A W W xxx5 A A A W W xxx6 A A A W W xxx7 A A A W W xxx8 A A A W W xxx9 Date Code Year For SC-70 Package Only Marking w: Work Week Code A A A W xxx0 A: 01&02 K: 21&22 U: 41&42 A A A W xxx1 B: 03&04 L: 23&24 V: 43&44 A A A W xxx2 C: 05&06 M: 25&26 W: 45&46 A A A W xxx3 D: 07&08 N: 27&28 X: 47&48 A A A W xxx4 E: 09&10 O: 29&30 Y: 49&50 A A A W xxx5 F: 11&12 P: 31&32 Z: 51&52 A A A W xxx6 G: 13&14 Q: 33&34 A A A W xxx7 H: 15&16 R: 35&36 A A A W xxx8 I: 17&18 S: 37&38 A A A W xxx9 J: 19&20 T: 39&40 Rev.C.02 19 AME µProcessor Supervisory AME8570 n Tape and Reel Dimension SOT-23 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size SOT-23 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm TSOT-23 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size 20 Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size TSOT-23 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm Rev. C.02 AME µProcessor Supervisory AME8570 n Tape and Reel Dimension SC-70-4 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size SC-70-4 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm SOT-143 P W AME AME PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Rev.C.02 Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size SOT-143 8.0±0.1 mm 4.0±0.1 mm 3000pcs 180±1 mm 21 AME µProcessor Supervisory AME8570 n Package Dimension SOT-23 Top View Side View SYMBOLS D E H θ1 L PIN 1 MAX MIN MAX A 1.00 1.40 0.0394 0.0551 A1 0.00 0.15 0.0000 0.0059 b 0.35 0.50 0.0138 0.0197 D 2.70 3.10 0.1063 0.1220 E 1.40 1.80 0.0551 0.0709 e 1.90 BSC 2.40 θ1 0.0748 BSC 3.00 0.35BSC L o 0 0.09449 0.11811 0.0138BSC o 10 o 0 o 10 A Front View INCHES MIN H e MILLIMETERS A1 b TSOT-23 Top View Side View D θ1 E H SYMBOLS L PIN 1 MAX MIN MAX A+A1 0.80 1.30 0.0315 0.0512 b 0.35 0.50 0.0138 0.0197 D 2.70 3.10 0.1063 0.1220 E 1.20 1.80 0.0472 0.0709 1.90 BSC e 2.40 0.0748 BSC 3.00 0.35BSC L θ1 0 o 0.0945 0.1181 0.0138BSC o 10 0 o 10 o b 22 A1 A Front View INCHES MIN H e MILLIMETERS Rev. C.02 AME µProcessor Supervisory AME8570 n Package Dimension (Contd.) SC-70-4 Top View Side View D e1 θ SYMBOLS E E1 PIN 1 L1 d b 0.20 c b1 Front View MAX MIN MAX A 0.900 1.100 0.035 0.043 A1 0.000 0.100 0.000 0.004 A2 0.900 1.000 0.035 0.039 b 0.250 0.400 0.010 0.016 b1 0.350 0.500 0.014 0.020 c 0.080 0.150 0.003 0.006 d A A2 0.002 TYP 2.000 2.200 0.079 0.087 E 1.150 1.350 0.045 0.053 E1 2.150 2.450 0.085 0.096 e1 L A1 0.050 TYP D e Rev.C.02 INCHES MIN e L MILLIMETERS L1 θ 0.650 TYP 1.200 0.026TYP 1.400 0.525 REF 0.260 0 o 0.460 8 o 0.047 0.055 0.021 REF 0.010 o 0 0.018 8 o 23 AME µProcessor Supervisory AME8570 n Package Dimension (Contd.) SOT-143 e1 θ e L E E1 d L1 c b1 1 place 0.250 b x3 place PIN 1 D TOP VIEW SIDE VIEW SYMBOLS A A2 A1 FRONT VIEW MILLIMETERS MIN MAX MIN MAX A 0.900 1.150 0.035 0.045 A1 0.000 0.100 0.000 0.004 A2 0.900 1.050 0.035 0.041 b 0.300 0.500 0.012 0.020 b1 0.750 0.900 0.030 0.035 c 0.080 0.150 0.003 0.006 D 2.800 3.000 0.110 0.118 0.200 TYP d 0.008 TYP E 1.200 1.400 0.047 0.055 E1 2.250 2.550 0.089 0.100 0.950 TYP e e1 1.800 L1 θ 0.037 TYP 2.000 0.071 0.550 REF. L 24 INCHES 0.300 0 o 0.022 REF 0.500 8 0.079 o 0.012 0 o 0.020 8 o Rev. C.02 www.ame.com.tw E-Mail: [email protected] 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. , March 2012 Document: 1221-DS8570-C.02 Corporate Headquarter AME, Inc. 8F, 12, WenHu St., Nei Hu Taipei, Taiwan. 114 Tel: 886 2 2627-8687 Fax: 886 2 2659-2989