SGM823-SXN5G/TR

SGM823 Microprocessor Supervisory Circuit with Watchdog Timer and Manual Reset GENERAL DESCRIPTION FEATURES The ● Ultra-Low Supply Current: < 1μA (TYP) SGM823 is an integrated microprocessor supervisory device with watchdog and manual reset ● Precision Supply-Voltage Monitor functions. Compared with the design using a single IC  4.63V for SGM823-L or discrete components, this integration design has the  3.08V for SGM823-T advantage of improving system stability and accuracy. The special design on SGM823 can ignore the fast transients on VCC. The SGM823 has four fixed reset threshold voltages of 4.63V, 3.08V, 2.93V and 2.63V. When VCC is as low as 1V, the reset output can still operate. And it also has  2.93V for SGM823-S  2.63V for SGM823-R ● Guaranteed nRESET Valid at VCC = 1V ● Push-Pull nRESET Output ● Reset Pulse Width: 200ms (TYP) ● Debounced TTL/CMOS-Compatible ● Manual Reset Input a low-level active manual reset nMR function. ● Watchdog Timer with 1.6s (TYP) Timeout The SGM823 is available in a Green SOT-23-5 package. ● Fully Specified over Temperature It operates over an ambient temperature range of -40℃ ● Power-Supply Transient Immunity to +125℃. ● Without External Components ● -40℃ to +125℃ Operating Temperature Range ● Available in a Green SOT-23-5 Package APPLICATIONS Computers Portable Equipment Automotive Equipment Intelligent Instruments Critical μP Power Monitoring TYPICAL APPLICATION VCC VCC Microprocessor VCC nRESET nRESET SGM823 nMR Manual Reset SG Micro Corp www.sg-micro.com WDI GND I/O GND JULY 2020 – REV. A. 2 Microprocessor Supervisory Circuit with Watchdog Timer and Manual Reset SGM823 PACKAGE/ORDERING INFORMATION MODEL SGM823 RESET THRESHOLD (V) PACKAGE DESCRIPTION ORDERING NUMBER PACKAGE MARKING PACKING OPTION 4.63 SOT-23-5 SGM823-LXN5G/TR MNFXX Tape and Reel, 3000 3.08 SOT-23-5 SGM823-TXN5G/TR MG6XX Tape and Reel, 3000 2.93 SOT-23-5 SGM823-SXN5G/TR MG7XX Tape and Reel, 3000 2.63 SOT-23-5 SGM823-RXN5G/TR MG8XX Tape and Reel, 3000 MARKING INFORMATION NOTE: XX = Date Code. YYY X X Date Code - Week Date Code - Year Serial Number Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If you have additional comments or questions, please contact your SGMICRO representative directly. ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with Respect to GND) VCC ................................................................ -0.3V to 6.0V All Other Inputs .................................-0.3V to (VCC + 0.3V) Input Current VCC ........................................................................... 20mA GND ......................................................................... 20mA Output Current All Outputs................................................................ 20mA Package Thermal Resistance SOT-23-5, θJA .......................................................... 234℃/W Junction Temperature ................................................ +150℃ Storage Temperature Range ....................... -65℃ to +150℃ Lead Temperature (Soldering, 10s) ........................... +260℃ ESD Susceptibility HBM ............................................................................. 4000V MM ................................................................................. 400V CDM ............................................................................ 1000V RECOMMENDED OPERATING CONDITIONS Ambient Temperature Range ........................ -40℃ to +125℃ SG Micro Corp www.sg-micro.com OVERSTRESS CAUTION Stresses beyond those listed in Absolute Maximum Ratings may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Functional operation of the device at any conditions beyond those indicated in the Recommended Operating Conditions section is not implied. ESD SENSITIVITY CAUTION This integrated circuit can be damaged if ESD protections are not considered carefully. SGMICRO recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because even small parametric changes could cause the device not to meet the published specifications. DISCLAIMER SG Micro Corp reserves the right to make any change in circuit design, or specifications without prior notice. JULY 2020 2 Microprocessor Supervisory Circuit with Watchdog Timer and Manual Reset SGM823 PIN CONFIGURATION (TOP VIEW) nRESET 1 GND 2 nMR 3 5 VCC 4 WDI SOT-23-5 PIN DESCRIPTION PIN NAME FUNCTION 1 nRESET Active-Low Reset Output Pin. It delivers a 200ms (TYP) low pulse when activated. nRESET remains low if VCC is below the reset threshold or nMR is logic low. It goes (or remains) low for 200ms after any of the following events: VCC rises above the reset threshold, a watchdog expiry triggers a reset, or the nMR input goes from low to high. 2 GND Ground. nMR Manual Reset Input Pin. nRESET keeps low when nMR is low. When nMR is high, nRESET becomes high after a 200ms timeout period. It is an active-low reset input with an internal 59kΩ pull-up resistor. nMR can be driven by a CMOS logic or by a switch shorting to GND. If not used, leave it open or connect it to VCC. 4 WDI Watchdog Input Pin. If the high or low state of WDI exceeds the watchdog timeout period, the internal watchdog timer is expired and a reset is triggered. The internal watchdog timer is clear while a reset is asserted. The timer is also cleared if the WDI input is changed (on rising or falling edges). The watchdog feature is disabled if the WDI is left open or if it is connected to a three-stated buffer output. 5 VCC Supply Voltage Pin. 3 SG Micro Corp www.sg-micro.com JULY 2020 3 Microprocessor Supervisory Circuit with Watchdog Timer and Manual Reset SGM823 ELECTRICAL CHARACTERISTICS (TA = +25℃, VCC = 4.73V to 5.5V for SGM823-L, VCC = 3.14V to 5.5V for SGM823-T, VCC = 2.99V to 5.5V for SGM823-S, VCC = 2.68V to 5.5V for SGM823-R, Full = -40℃ to +125℃, unless otherwise noted.) PARAMETER CONDITIONS Operating Voltage Range (VCC) Supply Current (ISUPPLY) MIN Full 1 TYP 1.2 VCC = 5.5V Full 0.7 1.4 SGM823-S SGM823-R +25℃ 4.55 4.63 4.70 Full 4.54 4.63 4.73 +25℃ 3.03 3.08 3.13 Full 3.02 3.08 3.14 +25℃ 2.88 2.93 2.98 Full 2.87 2.93 2.99 +25℃ 2.59 2.63 2.67 Full 2.58 2.63 2.68 SGM823-L +25℃ 20 SGM823-T +25℃ 14 SGM823-S +25℃ 13 SGM823-R +25℃ 12 nRESET Threshold Temperature Coefficient Full 20 nRESET Pulse Width (tRP) Full 140 Full VCC - 1.5 Full 0.8 × VCC VOL SGM823-L, VCC = VnRST(MAX), ISOURCE = 120μA SGM823-T/S/R, VCC = VnRST(MAX), ISOURCE = 30μA SGM823-L, VCC = VnRST(MIN), ISINK = 3.2mA SGM823-T/S/R, VCC = VnRST(MIN), ISINK = 1.2mA VCC = 1V, VCC falling, ISINK = 50μA nRESET Output Short-Circuit Current (ISOURCE) SGM823-L, nRESET = 0V, VCC = 5.5V SGM823-T/S/R, nRESET = 0V, VCC = 3.6V VCC to Reset Delay (tRD) VnRST - VCC = 100mV Watchdog Timeout Period (tWD) WDI Input Threshold nMR Input Voltage nMR Pulse Width (tMR) nMR Noise Immunity (Pulse width with no reset) mV ppm/℃ Full 0.4 V Full 0.3 Full 0.3 Full 460 Full 430 84 +25℃ VIL = 0V, VIH = VCC Full 90 Low VCC = 5V Full High VCC = 5V Full Low VnRST(MAX) < VCC < 3.6V Full High VnRST(MAX) < VCC < 3.6V Full WDI = VCC, time average Full WDI = 0V, time average Full sec ns V 0.7 × VCC 0.02 -0.5 Full 2 Full 300 0.5 -0.01 0.8 44 μA V ns 130 +25℃ Full μs 2.4 0.8 VIH Full μA 0.8 Full nMR Pull-Up Resistance (Internal) 1.6 3.5 VIL nMR to nRESET Out Delay (tMD) SG Micro Corp www.sg-micro.com V ms 1.1 WDI Input Current 200 μA 290 Full WDI Pulse Width (tWP) V 0.5 nRESET Threshold (VnRST) nRESET Output Voltage UNITS 5.5 Full SGM823-T VOH MAX VCC = 3.6V SGM823-L nRESET Threshold Hysteresis (VHYS) TEMP 59 ns 470 ns 78 kΩ JULY 2020 4 Microprocessor Supervisory Circuit with Watchdog Timer and Manual Reset SGM823 TYPICAL PERFORMANCE CHARACTERISTICS nRESET Comparator Propagation Delay vs. Temperature 140 VCC Falling 230 120 Propagation Delay (μs) nRESET Timeout Period vs. Temperature nRESET Timeout Period (ms) 240 220 210 200 190 180 100 80 60 40 -50 -25 0 25 50 75 100 125 20 150 -50 -25 0 Temperature (℃) 50 75 100 125 150 1.9 Normalized nRESET Threshold Voltage vs. Temperature 1.06 1.8 1.04 Normalized nRESET Threshold Watchdog Timeout Period vs. Temperature Watchdog Timeout Period (s) 25 Temperature (℃) 1.7 1.6 1.5 1.4 1.3 -50 -25 0 25 50 75 Temperature (℃) SG Micro Corp www.sg-micro.com 100 125 150 1.02 1.00 0.98 0.96 0.94 -50 -25 0 25 50 75 100 125 150 Temperature (℃) JULY 2020 5 Microprocessor Supervisory Circuit with Watchdog Timer and Manual Reset SGM823 FUNCTIONAL BLOCK DIAGRAM VCC + nMR _ Reset Generator nRESET + - 1.25V WDI Watchdog Transition Detector Watchdog Timer SGM823 GND SG Micro Corp www.sg-micro.com JULY 2020 6 SGM823 Microprocessor Supervisory Circuit with Watchdog Timer and Manual Reset REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. JULY 2020 ‒ REV.A.1 to REV.A.2 Page Updated Features section.................................................................................................................................................................................... 1 Changed Detailed Description section ................................................................................................................................................................. 7 JANUARY 2020 ‒ REV.A to REV.A.1 Page Changed Electrical Characteristics section .......................................................................................................................................................... 4 Changed Typical Performance Characteristics section ........................................................................................................................................ 5 Changed Figure 1 ................................................................................................................................................................................................ 7 Changes from Original (DECEMBER 2018) to REV.A Page Changed from product preview to production data ............................................................................................................................................. All SG Micro Corp www.sg-micro.com JULY 2020 7 PACKAGE INFORMATION PACKAGE OUTLINE DIMENSIONS SOT-23-5 1.90 D e1 E1 2.59 E 0.99 b e 0.69 0.95 RECOMMENDED LAND PATTERN (Unit: mm) L A A1 θ A2 Symbol Dimensions In Millimeters MIN MAX c 0.2 Dimensions In Inches MIN MAX A 1.050 1.250 0.041 0.049 A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 E1 2.650 2.950 0.104 0.116 e 0.950 BSC 0.037 BSC e1 1.900 BSC 0.075 BSC SG Micro Corp www.sg-micro.com L 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8° TX00033.000 PACKAGE INFORMATION TAPE AND REEL INFORMATION REEL DIMENSIONS TAPE DIMENSIONS P2 W P0 Q1 Q2 Q1 Q2 Q1 Q2 Q3 Q4 Q3 Q4 Q3 Q4 B0 Reel Diameter A0 P1 K0 Reel Width (W1) DIRECTION OF FEED NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF TAPE AND REEL Reel Diameter Reel Width W1 (mm) A0 (mm) B0 (mm) K0 (mm) P0 (mm) P1 (mm) P2 (mm) W (mm) Pin1 Quadrant SOT-23-5 7″ 9.5 3.20 3.20 1.40 4.0 4.0 2.0 8.0 Q3 SG Micro Corp www.sg-micro.com TX10000.000 DD0001 Package Type PACKAGE INFORMATION CARTON BOX DIMENSIONS NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF CARTON BOX Length (mm) Width (mm) Height (mm) Pizza/Carton 7″ (Option) 368 227 224 8 7″ 442 410 224 18 SG Micro Corp www.sg-micro.com DD0002 Reel Type TX20000.000