AMS803/09/10 Features z Description Precision supply-voltage monitor The AMS803/09/10 - 4.63V (AMS803/09/10L) supervisory circuits used to monitor the power supplies - 4.26V (AMS803/09/10M) in µP and digital systems. They provide excellent circuit - 3.08V (AMS803/09/10T) reliability and low cost by eliminating external - 2.93V (AMS803/09/10S) components and adjustments when used with +3.3V, - 2.63V (AMS803/09/10R) +3.0V, or 2.5V powered circuits. - 2.32V (AMS803/09/10Z) z 140ms(min) reset pulse width z Push-Pull These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines /RESET Output Configurations for RESET Output Configurations for configuration for below a preset threshold, keeping it asserted for at least AMS809 z Push-Pull 140ms after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of AMS810 z are microprocessor (µP) Open-Drain supply voltages are available. /RESET output The AMS803 has AMS803 while the AMS809/10 z 12µA Supply Current z Guaranteed Reset(/Reset) Valid to VCC = +1.0V z Power Supply Transient Immunity z No External Components open-drain output stage, have push-pull outputs. The AMS803’s open-drain /Reset output requires a pull-up resistor that can be connected to a voltage higher than VCC. The AMS803/09 have an active-low /RESET output while the AMS810 has an active-high RESET Ordering Information Part Number an output. The reset comparator is designed to ignore fast Package AMS803XTE Lead free and Green SOT23-3 AMS809XTE Lead free and Green SOT23-3 AMS810XTE Lead free and Green SOT23-3 transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V. Low supply current makes Note: “x” refers to voltage range, see below table. the AMS803/09/10 ideal for use in portable equipment. The ICs are available in 3 pin SOT23 packages. Suffix: X—Monitored Voltage X L Reset Threshold (V) 4.63 M 4.26 T 3.08 S 2.93 R 2.63 Block Diagram VCC Reset Logic and Timer + - VRST Advanced Monolithic Systems 1 http://www.ams-semitech.com RESET Z 2.32 AMS803/09/10 Pin Configuration AMS803/09/10XT 1 GND VCC 3 2 RESET SOT23-3 Pin Description Pin Type Description VCC - Supply Voltage. Reset is asserted when VCC drops below the Reset Threshold Voltage (VRST). Reset remains asserted until VCC rises above VRST and keep asserted for the duration of the Reset Timeout Period (tRS) once VCC rises above VRST. GND - Ground RESET O Active-Low Reset Output (Push-Pull). It goes low when Vcc is below the reset threshold. It remains low for about 200ms after Vcc rises above the reset threshold (VRST). Functional Description Reset Output A microprocessor (µP) reset input starts the µP in a known state. Whenever the µP is in an unknown state, it should be held in reset. The supervisory circuits assert reset during power-up and prevent code execution errors during power-down or brownout conditions. On power-up, once Vcc reaches about 1.0V, /RESET is a guaranteed logic low of 0.4V or less. As Vcc rises, /RESET stays low. When Vcc rises above the reset threshold, an internal timer releases /RESET after about 200ms. /RESET pulses low whenever Vcc drops below the reset threshold, i.e. brownout condition. If brownout occurs in the middle of a previously initiated reset pulse, guaranteed to be 0.4V or less until Vcc drops below 1.0V. Reset Timing Diagram shows the timing relationship. Advanced Monolithic Systems 2 http://www.ams-semitech.com AMS803/09/10 Typical Application Circuit Advanced Monolithic Systems 3 http://www.ams-semitech.com AMS803/09/10 Maximum Ratings Storage Temperature ............................................................-65oC to +150oC Ambient Temperature with Power Applied.......................... -40oC to +85oC Supply Voltage to Ground Potential (Vcc to GND) ..............-0.3V to +6.0V DC Input Voltage (All inputs except Vcc and GND)......-0.3V to VCC+0.3V DC Output Current (All outputs) ..........................................................20mA Power Dissipation .............................................................................. 320mW Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Recommended Operation Conditions Sym VCC TA Description Supply Voltage for 803/09/10(L/M) Supply Voltage for 803/09/10(T/S) Supply Voltage for 803/09/10(R/Z) Test Conditions - Operating Temperature Advanced Monolithic Systems - 4 Min 4.5 3.0 2.7 Typ 5.0 3.3 3.0 -40 http://www.ams-semitech.com - Max 5.5 5.5 5.5 85 Unit V V V ℃ AMS803/09/10 DC Electrical Characteristics (VCC = VRN + 5% to 5.5V, TA= -40~85ºC, unless otherwise noted.)(Note 1) Symbol VCC ICC ICC VRST （VRTH－) Description Test Conditions Operating Voltage Range Supply Current Supply Current Threshold Voltage(Fallingedge)(Note 2) 1.0 - 10 10 5.5 30 30 V V RN -1.1% VRN VRN +1.1% VRN - 1.5% VRN V RN + 1.5% TA= -40 ~ 85ºC AMS809M VRN - 1.8% VRN V RN + 2% TA= -40 ~ 85ºC All except 809M VRN - 2.5% VRN VRN + 2.5% AMS809M 4.232 VRTH Reset Threshold Hysteresis (Note 2) Vcc varies between VRN ± 5% (Only for 8xxL/M) Output Low Voltage Unit AMS809M All except 809M TA= -40 ~ 85ºC VOL Max TA= 25ºC Threshold Voltage(Risingedge) (Note 2) Output High Voltage Typ Vcc < 5.5V, AMS8xxL/M Vcc < 3.6V, AMS8xxR/S/T/Z VRTH＋ VOH Min 4.31 - µA V 4.396 50 - mV Vcc ≥ 4.5V Isource=800µA Vcc-1.5 - - Vcc ≥ 2.7V Isource=500µA 0.8×Vcc - - Vcc ≥ 1.8V Isource=150µA 0.8×Vcc - - Vcc ≥ 1.0V Isource=4µA 0.8×Vcc - - Vcc ≥ 4.5V Isink=3.2mA - - 0.4 Vcc ≥ 2.7V Isink=1.2mA - - 0.3 V V 0.3 Vcc ≥ 1.0V Isink=100µA Note: 1. Parameters of room temperature guaranteed by production test and parameters of full-temperature guaranteed by design. 2. VRST is Reset threshold voltage when VCC falls from high to low level. VRN is nominal reset threshold voltage. AC Electrical Characteristics Symbol Description Test Conditions tRS Reset Pulse Width Min Typ Max - 8xxT/S/R/Z 140 240 560 TA= 25ºC 8xxL/M 140 200 280 Reset Timing Diagram VCC VRST VRST + VRTH tRS RESET Advanced Monolithic Systems 5 http://www.ams-semitech.com Unit ms AMS803/09/10 Mechanical Information TE (Lead free and Green SOT23-3) X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS Note: 1) Controlling dimensions in millimeters. 2) Ref: JEDEC TO-236H Advanced Monolithic Systems 6 http://www.ams-semitech.com AMS803/09/10 Marking Information AA LJ DATE CODE YEAR & WORK WEEK PART NO. 2 BIT CODE (See Below Table) Example: AAPJ No. 1 2 3 4 5 6 Part No. AMS809L AMS809M AMS809T AMS809S AMS809R AMS809Z PART NO.: AMS809LT DATE CODE: YEAR 2005 WW10 Code AA AB AC AD AE AF No. 7 8 9 10 11 12 AAPJ Part No. AMS803L AMS803M AMS803T AMS803S AMS803R AMS803Z Advanced Monolithic Systems 7 Lead-Free Sign -: lead-free PART NO.: AMS809LTE DATE CODE: YEAR 2005 WW10 Lead –free package Code BC BD BE BF BG BH No. 13 14 15 16 17 18 http://www.ams-semitech.com Part No. AMS810L AMS810M AMS810T AMS810S AMS810R AMS810Z Code AH AI AJ AK AL AM AMS803/09/10 Notes Disclaimer: • AMS reserves the right to make changes to the information herein for the improvement of the design and performance without further notice! Customers should obtain the latest relevant information before placing orders and should verify that such information is complete and current. • All semiconductor products malfunction or fail with some probability under special conditions. When using AMS products in system design or complete machine manufacturing, it is the responsibility of the buyer to comply with the safety standards strictly and take essential measures to avoid situations in which a malfunction or failure of such AMS products could cause loss of body injury or damage to property. • AMS will supply the best possible product for customers! Advanced Monolithic Systems 8 http://www.ams-semitech.com