IC for CMOS System Reset PST81XX, 82XX Series IC for CMOS System Reset Monolithic IC PST81XX, 82XX Series Outline This IC functions in a variety of CPU systems and other logic systems, to detect supply voltage and reset the system accurately when the power is turned on or interrupted. To ±1.5% of detection voltage accuracy of the conventional models, a maximum of ±0.5% of super-high precision is realized, and it is more suitable for battery detection etc. Moreover, the mounting area signicantly contributes to space saving using the SSON package. Ultra-low current consumption Ultra-small package Operating temperature range Detecting voltage rank Output conguration Reset circuits for microcomputers, CPUs and MPUs Reset circuits for logic circuits Battery voltage check circuits Back-up power supply switching circuits Level detection circuits • Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification. • The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

IC for CMOS System Reset PST81XX, 82XX Series Block Diagram PST81XX * 1 - 3 in the circuit diagram is pin number for the SOT-25A package. : Protection Circuit PST82XX * 1 - 3 in the circuit diagram is pin number for the SOT-25A package. : Protection Circuit • Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification. • The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

IC for CMOS System Reset PST81XX, 82XX Series Reset Signal Output Pin Reset Signal Output Pin Reset Signal Output Pin • Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification. • The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

IC for CMOS System Reset PST81XX, 82XX Series Absolute Maximum Ratings PST81XX Item Supply voltage Output voltage Output current (RESET, RESET) Power Dissipation Operating temperature Storage temperature Supply voltage Output voltage Output current (RESET, RESET) Power Dissipation Operating temperature Storage temperature note : With PC board of glass epoxy. (The tab pin is not connected with PC board.) PC board size of 110×40×0.8mm Recommended Operating Conditions Item Operating temperature Supply voltage • Any products mentioned in this catalog are subject to any modification in their appearance...

IC for CMOS System Reset PST81XX, 82XX Series Electrical Characteristics (Except where noted otherwise Ta=25°C) PST81XX Item Supply current Reset threshold Reset threshold hysteresis Reset threshold temp. coefcient L transfer delay time H transfer delay time Symbol IDD VTH VTH VTH/°C tPHL tPLH IOL1 note1 : This device is tested at Ta=25°C, over temperature limits guaranteed by design only. note2 : The parameter is guaranteed by design. PST82XX Item Supply current Reset threshold Reset threshold hysteresis Reset threshold temp. coefcient L transfer delay time H transfer delay time VTH VTH/°C tPHL...

IC for CMOS System Reset PST81XX, 82XX Series Measuring Circuit PST81XX * 1 - 3 in the circuit diagram is pin number for the SOT-25A package. (1) IDD Input Voltage Output Voltage • Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification. • The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

IC for CMOS System Reset PST81XX, 82XX Series PST82XX * 1 - 3 in the circuit diagram is pin number for the SOT-25A package. (1) IDD Output Voltage • Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification. • The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

IC for CMOS System Reset PST81XX, 82XX Series Application Circuits PST81XX * 1 - 3 in the circuit diagram is pin number for the SOT-25A package. VDD Logic System • Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification. • The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.

IC for CMOS System Reset PST81XX, 82XX Series PST82XX * 1 - 3 in the circuit diagram is pin number for the SOT-25A package. System RESET We shall not be liable for any trouble or damage caused by using this circuit. In the event a problem which may affect industrial property or any other rights of us or a third party is encountered during the use of information described in these circuit, Mitsumi Electric Co., Ltd. shall not be liable for any such problem, nor grant a license therefore. • • Please note that there is any possibility of circuit oscillation when resistance put in the line VIN. Please...

IC for CMOS System Reset PST81XX, 82XX Series (Typical Performance Characteristics 2.8V) Detecting Voltage Detecting Voltage - Temperature Hysteresis Voltage - Temperature Hysteresis Voltage (mV) note : these are typical characteristics • Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification. • The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.