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UIC811 Dataheets PDF



Part Number UIC811
Manufacturers UTC
Logo UTC
Description MICROPROCESSOR RESET
Datasheet UIC811 DatasheetUIC811 Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD UIC811 MICROPROCESSOR RESET CIRCUITS 3 CMOS IC 3  DESCRIPTION The UTC UIC811 series are resetting circuits which can monitor power supplies especially in microprocessor based systems. In normal operation, the UTC UIC811 series can assert a reset under any of the following situation: the power supply drops below a designated reset threshold level (which is available for 3V or 3.3V or 5V system) or MR is forced low. There is an internal active low RESET output .

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UNISONIC TECHNOLOGIES CO., LTD UIC811 MICROPROCESSOR RESET CIRCUITS 3 CMOS IC 3  DESCRIPTION The UTC UIC811 series are resetting circuits which can monitor power supplies especially in microprocessor based systems. In normal operation, the UTC UIC811 series can assert a reset under any of the following situation: the power supply drops below a designated reset threshold level (which is available for 3V or 3.3V or 5V system) or MR is forced low. There is an internal active low RESET output which has already been guaranteed to remain asserted for at 140ms least while VCC rises above the designed threshold level.  FEATURES 2 1 SOT-23 (EIAJ SC-59) 2 1 SOT-23-3 (JEDEC TO-236) 3 4 3 4 2 1 12 SOT-143 SOT-343 * Voltage monitor for 3V or 3.3V or 5V power supplies * Valid RESET remains with VCC as low as 1V * Typical supply current: 5µA * Fixed 140ms minimum reset pulse width * With Manual reset input  ORDERING INFORMATION Ordering Number Lead Free Halogen Free Package Pin Assignment 1 234 Packing UIC811L-x-AE2-2-R UIC811G-x-AE2-2-R SOT-23-3 RESET VCC GND - Tape Reel UIC811L-x-AE2-3-R UIC811G-x-AE2-3-R SOT-23-3 GND RESET VCC - Tape Reel UIC811L-x-AE3-2-R UIC811G-x-AE3-2-R SOT-23 RESET VCC GND - Tape Reel UIC811L-x-AE3-3-R UIC811G-x-AE3-3-R SOT-23 GND RESET VCC - Tape Reel UIC811L-x-AD4-R UIC811G-x-AD4-R SOT-143 GND RESET MR VCC Tape Reel UIC811L-x-AL4-R UIC811G-x-AL4-R SOT-343 GND RESET MR VCC Tape Reel Note: Pin Assignment : x: Output Voltage, refer to Marking Information. UIC811G-x-AE2-2-R (1) Packing Type (2) Pin Assignment (3) Package Type (4) Output Voltage Code (5) Green Package (1) R: Tape Reel (2) refer to Pin Assignment (3) AE2: SOT-23-3, AE3: SOT-23, AD4: SOT-143 (3) AL4: SOT-343 (4) x: Refer to Marking Information (5) G: Halogen Free and Lead Free, L: Lead Free www.unisonic.com.tw Copyright © 2020 Unisonic Technologies Co., Ltd 1 of 8 QW-R502-317.P UIC811  MARKING INFORMATION PACKAGE VOLTAGE CODE SOT-23 SOT-23-3 SOT-143 A : 2.63V B : 2.93V C : 3.08V D: 4.00V E: 4.38V F: 4.63V J: 5.00V CMOS IC MARKING 3 Voltage Code UX 12 43 L: Lead Free G: Halogen Free Pin Code Voltage Code UX 12 43 L: Lead Free G: Halogen Free SOT-343 Voltage Code UX L: Lead Free G: Halogen Free  PIN CONFIGURATION SOT-143 VCC MR 43 SOT-343 VCC MR 43 12 SOT-23-3/SOT-23 AE2-2/AE3-2 GND 3 AE2-3/AE3-3 VCC 3 1 GND 2 RESET 1 GND 2 RESET  PIN DESCRIPTION 1 RESET 2 VCC 1 GND 2 RESET PIN NAME GND RESET MR VCC DESCRIPTION Ground This pin will fall low after the VCC’s falling below the reset threshold voltage and it also can remain asserted for at least 140ms min after VCC’s rising upon the reset threshold. Input of manual reset. A reset can be forced by a logic low on MR . As the MR is held low, the reset will remain asserted, and until the MR rise high, the reset will remain 140ms min at least. When it is float that means it is unused. For SOT-143 and SOT-343 only. Input of power supply. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 8 QW-R502-317.P UIC811  BLOCK DIAGRAM CMOS IC VCC Reset Threshold MR RESET GENERATOR RESET GND  FUNCTIONAL DIAGRAM VCC MR RESET tRST VTH Reset Timing Diagram tRST UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 8 QW-R502-317.P UIC811 CMOS IC  ABSOLUTE MAXIMUM RATING PARAMETER Input Voltage Input Current (VCC, MR ) SYMBOL VCC IIN RATINGS -0.3~+6.0 20 UNIT V mA Output Current ( RESET ) IOUT 20 mA Rate of Rise VCC(RR) 100 V/µs Power Dissipation (TA =+70°C) SOT-143 SOT-343 SOT-23/SOT-23-3 PD 320 250 mW 300 Operating Temperature TOPR -40 ~ +105 °C Storage Temperature TSTG -65 ~ +150 °C Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. The device is not guaranteed to function outside its operating rating.  ELECTRICAL CHARACTERISTICS UIC811-A (2.63V) (VCC =3V, TA = 25°C, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS Operating Voltage Range VCC TA =-40~+85°C Supply Current ICC VCC=3.0V, no load Reset Voltage Threshold VTH Reset Timeout Period tRST VOH ISOURCE =500µA Reset Output Voltage VOL VCC = VTH min, ISINK =1.2mA VCC>1V, ISINK =50µA, TA =-40~+85°C MR Input Threshold VIH VIL MR Minimum Pulse Width MR to Reset Delay MR Pull-Up Resistance MR Glitch Immunity UIC811-B (2.93V) (VCC =3.3V, TA= 25°C, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS Operating Voltage Range VCC TA =-40~+85°C Supply Current ICC VCC=3.3V, no load Reset Voltage Threshold VTH Reset Timeout Period tRST VOH ISOURCE =500µA Reset Output Voltage VOL VCC = VTH min, ISINK =1.2mA VCC>1V, ISINK =50µA, TA =-40~+85°C MR Input Threshold VIH VIL MR Minimum Pulse Width MR to Reset Delay MR Pull-Up Resistance MR Glitch Immunity MIN TYP MAX UNIT 1 6V 5 10 µA.


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