UNISONIC TECHNOLOGIES CO., LTD UIC813 Preliminary CMOS IC 3-PIN MICROPROCESSOR RESET CIRCUITS DESCRIPTION The UTC UIC813 series are resetting circuits which can monitor power supplies especially in microprocessor based systems. In normal operation, the UTC UIC813 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). There is an internal active high RESET output which has already been guaranteed to remain asserted for at 140ms least while VCC rises above the designed threshold level. FEATURES * Voltage monitor for 3V or 3.3V or 5V power supplies * Valid RESET remains with VCC as low as 1V * Typical supply current: 10µA * Fixed 140ms minimum reset pulse width * Push-Pull Reset Active High Optput. ORDERING INFORMATION Ordering Number Note: Package UIC813G-x-AE3-5-R SOT-23 x: Output Voltage, refer to Marking Information. www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 GND Pin Assignment 2 RESET 3 VCC Packing Tape Reel 1 of 5 QW-R119-026.a UIC813 Preliminary MARKING INFORMATION PACKAGE VOLTAGE CODE MARKING 3 SOT23 A: 2.63V B: 2.93V C: 3.08V D: 4.00V E: 4.38V F: 4.63V PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2 3 CMOS IC PIN NAME GND RESET VCC 3V Voltage Code 2 Pin Code 1 DESCRIPTION Ground Reset Output Pin Input of power supply BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R119-026.a UIC813 Preliminary CMOS IC FUNCTIONAL DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 5 QW-R119-026.a UIC813 Preliminary CMOS IC ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.3~+6.0 V RESET (push-pull) VRESET -0.3~(VCC+0.3) V Input Current, VCC ICC 20 mA Output Current, RESET IOUT 20 mA Rate of Rise VCC(RR) 100 V/µs Continuous Power Dissipation (TA=+70°C), PD 360 mW De-rate 4mW/°C Above +70°C Operating Junction Temperature Range TOPR -40~+105 °C Storage Temperature Range TSTG -65~+150 °C Note: 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. ELECTRICAL CHARACTERISTICS (TA=-40~85°C unless otherwise note. Typical values are at TA=+25°C) (Note 1) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT VCC Range VCC TA=0°C~+70°C 1.0 5.5 V Supply Current ICC VTH+0.2V 10 30 μA VCC=3V UIC813-A 2.59 2.63 2.69 UIC813-B 2.88 2.93 3.00 VCC=3.3V UIC813-C 3.02 3.08 3.15 V Reset Threshold VTH UIC813-D 3.93 4.00 4.08 VCC=5V UIC813-E 4.31 4.38 4.47 UIC813-F 4.54 4.63 4.72 Reset Threshold Tempco VTH 30 ppm/°C Set-up Time TS VCC=VTH~(VTH-100mV) 20 μs Reset Active Timeout Period tRST TA=0°C~+85°C 140 320 560 ms VCC=VTH+0.2, ISINK=1.2mA 0.3 V RESET Output Voltage-Low VOL 0.4 VCC=VTH+0.2, ISINK=3.2mA RESET Output Voltage-High VOH 1.8V<VCC<VTH-0.2, ISOURCE=150uA 0.8×VCC V Notes: 1. Production testing done at TA=+25°C; limits over temperature guaranteed by design. 2. Devices mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R119-026.a UIC813 Preliminary CMOS IC TYPICAL APPLICATION CIRCUIT UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 5 QW-R119-026.a