-- ---- -- .,.,'. MC34164 Mti33164 1 MOTOROLA SEMICONDUCTOR TECHNICAL DATA Advance ., .. Information MICROPOWER UNDERVOLTAGE SENSING CIRCUITS The MC341~ cally designed cessor based These devices voltage series are undervoltage for use as reset systems where with tion, in portable battery an economical micropro- life is required. solution a single external resistor. The series features a bandgap thresholds extended offer the designer detection sensing circuits specifi- controllers reference, and built-in-hysteresis a comparator to prevent for low M~4164 with precise erratic reset opera- an open collector reset output capable of sinking in excess of 6.0 mA, and guaranteed extremely low standby operation current. These down to 1.0 V input devices are packaged with in 3-pin TO-226AA and 8-pin surface mount packages. Applications include direct monitoring of the 3.0 or 5.0 Volt MPU/logic power supply used in appliance, automotive, consumer, and industria( equipment. ~\~11 ?t\\, >,J ~ `!A,l\)i$~" Monitors 3.0 Volt (MC341W3} or 5.0 Volt (MC341U-5) PoA~$ "'Z<} ;(,. Supplies .!..,>*~FL* ~:;~ "`` `:\.' PreciseComparator Thresholds Guaranteed Over , :*: m:,.i,~.';. f\,\+ .,t . ,l.:$tl. .,<(E* ~ , .. Temperature .~>y.$:!-:$:,.$.?., . `, ."+~. Comparator HysteresisPrevents ErraticReset TemperatureCompensated Reference Reset Output &pable Pin 1. Reset 2. Input 3. Ground 1 3 of Sinking in =cess,~,6.O"&A InternalCiamp Diode for Discharging Dala$:*acitor Guaranteed ResetOperation with l.O,y'f~*' Extremely Low Standby Current: ~~~~~~;s 9.0@ Economical TO-226AA and Su~X~~@b'unt ` .-, . ..... ...-. .-,,-. ----------'--~ HGURE 14 -- LOW VOLTAGE Ml~OPRMESSOR RESET ~ (MUXl~ shown) + 3 Power HY_ESIS ADDrnONAL TE= I -- (:V) DATA AVth RH (mV) (n) \ (%) 1 ------ -- 103 1.0 100 123 1.0 100 155 u Microprocessor supply Grcuit I L = = 199 i 280 + 0.06 I , z.$a~,$o 262<$ ..,:~7 I Mn~1=5%=)---d `Vth(lower) =`0 4.3 ` 470 10 X74- `H x 10-6 y ,, 470 6.8 470 5.6 470 4.3 ,>~1: . Comparator hysteresissan be increased with the addition of resistor RH. The *~%@s equationhas b=n simplified and does not account for the change of input current Iin as Vcc crossesthe cow~$tO@khreshold (Hgure 8). An increaseof the lower threshold AVthflower) willbe obsewed due to Ii" which is typically3@~~Aa~$!~V. The equations are acsurateto = TWA .,.,\..\" with RH lessthan 1.0 U] and RL beween 4.3 Ml and 43 k!l. , `,,+$ ,,. .,$,. k~ \, `Z,}*.,,, .,. & Solar Cells 17 -- MOSFET LOW VOLTAGE GATE DRIVE PROTECTION USING THE MC3X1M-5 Vcc a 1 MTP3055EL -- -- ------ -- I t!ng !nsuficient ] 1 a~ve circuit, volt Ihreshold the 3 (4) of Ihe gate ga[e of the logic level voltage can power be MOSFET prevented due with IO the When [he input signal is be,ow the 4.3 of the MC3X164.5, its output grounds L2 MOSFET. MC3X16U-5 -- -- MOTOROLA c MQ164 MC33164 SERIES ` .. . . .__-----_--. __-------- .......... . . .. . .. . OU~NE -. DIMENSIONS P sumx PWSTIC PACUGE CASE 29-04 ., I mSE 751%3 NOB {S0-8) 1. DIMENSIONS .'N AND "8 ARE DATUMS AND IS A DATUM T SURFAm. NOTES: 1 CONTOUR OF PACWGE BEYONO ZONE "V IS UNCONTROLLED. 2 DIM .'~ APPLIES BEWEEN "W AND "r. DIM `"Y & "Y APPLIES BEWEN"~ & 12.?km DIM S !0 5-1 FROM SEATNG PLANE. HO UNCONTROUED IN "H" & EEVONO 12.7tim (0.5-1 FROM SEAnNG PLANE. 3 CONTROLLING DIM: INCH. I Motorola reSerVeS does not assume utlder its patent intended where"po" trademark MWIW the right any fiability rights for surgical Motorola arising nor the rights implant changes I"C. Moto:cda. without funher out of the application of others. into the body shall determine Of. Motorola. o M~31w [o make Motorola or intended &JailabilitV products to suppon and suitabil"ti Inc. is an Equal notice to any produas or use of anv product are not authorized or sustain of its product Employment herein 10 improve or circuit de%ribed reliability, herein; for use as components life. BuVer agrees to notify or produas OpponunitV/Afirmative for the u= Action EmploVer. SERIES or design. it dces in life suppon Motorola intended. function r.either Motorola CO"VeY anv devices or systems of any such i"te"ded Motorola and @ ticen~e end "se are registered MOTOROW ,. 7- " . . .... . . -. . . ... .. .. . .. .. -----.. . .. - . .. .. ----- .. ..... . ---. .. Literature Ustribution Centers: USA: Motorola Literature Distribution; P.0. Box 20912; Phoenix, Arizona 85036. EUROPE: Motorola Ltd.; European Literature Center; 88 Tanne~ Drive. Blakelands, Milton Keynes, MK14 SBP. England. ASIA PACIFIC: Motorola Semiconductors H.K. Ltd.: P.O. Box 80300; Cheung Sha Wan Post Office; Kowloon Hong Kong JAPAN: Nippon Motorola Ltd.; 3-20-1 Minamiazabu. Minato-ku, Tokyo 106 Japan.