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ds04-27400-9e fujitsu semiconductor data sheet assp for power supply applications bipolar power supply monitor mb3771 n description the fujitsu mb3771 is designed to monitor the voltage level of one or two power supplies (+5 v and an arbitrary voltage) in a microprocessor circuit, memory board in large-size computer, for example. if the circuits power supply deviates more than a specified amount, then the mb3771 generates a reset signal to the microprocessor. thus, the computer data is protected from accidental erasure. using the mb3771 requires few external components. to monitor only a +5 v supply, the mb3771 requires the connection of one external capacitor. the level of an arbitrary detection voltage is determined by two external resistors. the mb3771 is available in an 8-pin dual in-line, single in-line package or space saving flat package. n features ? precision voltage detection ( v sa = 4.2 v 2.5 % ) ? user selectable threshold level with hysterisis (v sb = 1.23 v 1.5 % ) ? monitors the voltage of one or two power supplies (5 v and an arbitrary voltage, > 1.23 v) ? usable as over voltage detector ? low voltage output for reset signal (v cc = 0.8 v typ) ? minimal number of external components (one capacitor min) ? low power dissipation (i cc = 0.35 ma typ, v cc = 5 v) ? detection threshold voltage has hysteresis function ? reference voltage is connectable. n packages 8-pin plastic dip 8-pin plastic sip 8-pin plastic sop (dip-8p-m01) (sip-8p-m03) (fpt-8p-m01)
mb3771 2 n n n n pin assignment n n n n block diagram c t v sc out c gnd reset v sa v sb /resin v cc 1 2 3 4 8 7 6 5 (top view) (dip-8p-m01) (fpt-8p-m01) reset v sa v sb / resin v cc gnd out c v sc c t 8 7 6 5 4 2 3 1 (front view) (sip-8p-m03) v sa v sb / resin reset @ 1.24 v @ 12 m a @ 10 m a @ 1.24 v reference voltage @ 40 k w - + comp. a comp. b r s q v cc v sc gnd c t out c 7 6 5 2 4 3 8 1 comp. c + - - + + + - - @ 100 k w
mb3771 3 n n n n functional descriptions comparators comp.a and comp.b apply a hysteresis to the detected voltage, so that when the voltage at either the v sa or v sb pin falls below 1.23 v the reset output signal goes to low level. comp. b may be used to detect any given voltage(sample application 3), and can also be used as a forced reset pin (with reset hold time) with ttl input (sample application 6). note that if comp.b is not used, the v sb pin should be connected to the v cc pin (sample application 1). instantaneous breaks or drops in the power supply can be detected as abnormal conditions by the mb3771 within a 2 m s interval. however because momentary breaks or drops of this duration do not cause problems in actual systems in some cases, a delayed trigger function can be created by connecting capacitors to the v sa or v sb pin (sample application 8). because the reset output has built-in pull-up resistance, there is no need to connect to external pull-up resistance when connected to a high impedance load such as a cmos logic ic. comparator comp. c is an open-collector output comparator without hysteresis, in which the polarity of input/ output characteristics is reversed. thus comp. c is useful for over-voltage detection (sample application 11) and positive logic reset signal output (sample application 7), as well as for creating a reference voltage (sample application 10). note that if comp. c is not used, the v sc pin should be connected to the gnd pin (sample application 1). n n n n function explanation ( 1 ) when v cc rises to about 0.8v, reset goes low. ( 2 ) when v cc reaches v s + v hys , c t then begins charging. reset remains low during this time ( 3 ) reset goes high when ct begins charging. t po : = c t 10 5 (refer to c t pin capacitance vs. hold time ) (4) when v cc level dropps lower then v s , then reset goes low and c t starts discharging. (5) when v cc level reaches v s + v hys , then c t starts charging. in the case of voltage sagging, if the period from the time v cc goes lower than or equal to v s to the time v cc reaches v s +v hys again, is longer than t pi , (as specified in the ac characteristics), c t is discharged and charged successively. (6) after t po passes, and v cc level exceeds v s + v hys , then reset goes high. (7) same as point 4. (8) reset remains low until v cc drops below 0.8v. v cc c t reset 1 2 3 4 8 7 6 5 reset v cc v s 0.8 v v hys (1) (2) (3) (4) (5) (6) (7) (8) t po t po t t
mb3771 4 n n n n absolute maximum ratings warning: semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.) in excess of absolute maximum ratings. do not exceed these ratings. n n n n recommended operating conditions warning: the recommended operating conditions are required in order to ensure the normal operation of the semiconductor device. all of the devices electrical characteristics are warranted when the device is operated within these ranges. always use semiconductor devices within their recommended operating condition ranges. operation outside these ranges may adversely affect reliability and could result in device failure. no warranty is made with respect to uses, operating conditions, or combinations not represented on the data sheet. users considering application outside the listed conditions are advised to contact their fujitsu representatives beforehand. parameter symbol rating unit min max power supply voltage v cc - 0.3 + 20 v input voltage v sa - 0.3 v cc + 0.3 ( < + 20 ) v v sb - 0.3 + 20 v v sc - 0.3 + 20 v power dissipation p d ? 200 ( ta 85 c ) mw storage temperature tstg - 55 + 125 c parameter symbol value unit min max power supply voltage v cc 3.5 18 v output current i reset 020ma i outc 06ma operating ambient temperature top - 40 + 85 c
mb3771 5 n n n n electrical characteristics 1. dc characteristics ( v cc = 5 v, ta = + 25 c ) parameter symbol conditions value unit min typ max power supply current i cc1 v sb = 5 v, v sc = 0 v ? 350 500 m a i cc2 v sb = 0 v, v sc = 0 v ? 400 600 m a detection voltage v sal (down) v cc 4.10 4.20 4.30 v ta = - 40 c to + 85 c 4.05 4.20 4.35 v v sah (up) v cc 4.20 4.30 4.40 v ta = - 40 c to + 85 c 4.15 4.30 4.45 v hysterisis width v hysa ? 50 100 150 mv detection voltage v sb v sb 1.212 1.230 1.248 v ta = - 40 c to + 85 c 1.200 1.230 1.260 v deviation of detection voltage d v sb v cc = 3.5 v to 18 v ? 310mv hysterisis width v hysb ? 14 28 42 mv input current i ihb v sb = 5 v ? 0 250 na i ilb v sb = 0 v ? 20 250 na output voltage v ohr i reset = - 5 m a, v sb = 5 v 4.5 4.9 ? v v olr i reset = 3ma, v sb = 0 v ? 0.28 0.4 v i reset = 10ma, v sb = 0 v ? 0.38 0.5 v output sink current i reset v olr = 1.0 v, v sb = 0 v 20 40 ? ma ct charge current i ct v sb = 5 v, v ct = 0.5 v 9 12 16 m a input current i ihc v sc = 5 v ? 0 500 na i ilc v sc = 0 v ? 50 500 na detection voltage v sc ? 1.225 1.245 1.265 v ta = - 40 c to + 85 c 1.205 1.245 1.285 v deviation of detection voltage d v sc v cc = 3.5 v to 18 v ? 310mv output leakage current i ohc v ohc = 18 v ? 01 m a output voltage v olc i outc = 4 ma, v sc = 5 v ? 0.15 0.4 v output sink current i outc v olc = 1.0 v, v sc = 5 v 6 15 ? ma reset operation minimum supply voltage v ccl v olr = 0.4 v, i reset = 200 m a ? 0.8 1.2 v
mb3771 6 2. ac characteristics (v cc = 5 v, ta = + 25 c, c t = 0.01 m f) *1: in case of v sb termination. *2: in case of v sc termination. parameter symbol conditions value unit min typ max v sa , v sb input pulse width t pi ? 5.0 ??m s reset hold time t po ? 0.5 1.0 1.5 ms reset rise time t r r l = 2.2 k w , c l = 100 pf ? 1.0 1.5 m s reset fall time t f ? 0.1 0.5 m s propagation delay time t pd * 1 ?? 210 m s t phl * 2 r l = 2.2 k w , c l = 100 pf ? 0.5 ? m s t plh * 2 ? 1.0 ? m s
mb3771 7 n n n n application circuit 1. 5v power supply monitor monitored by v sa . detection threshold voltage is v sal and v sah 2. 5v power supply voltage monitor (externally fine-tuned type) the v sa detection voltage can be adjusted externally. resistance r 1 and r 2 are set sufficiently lower than the ic internal partial voltage resistance, so that the detection voltage can be set using the ratio between resistance r 1 and r 2 . (see the table below). ?r 1 , r 2 calculation formula (when r 1 << 100 k w , r 2 <<40 k w ) v sal : = (r 1 + r 2 ) v sb /r 2 [v], v sah : = (r 1 + r 2 ) (v sb + v hysb ) / r 2 [v] r 1 (k w )r 2 (k w ) detection voltage : v sal (v) detection voltage : v sah (v) 10 3.9 4.37 4.47 9.1 3.9 4.11 4.20 v cc c t reset mb3771 1 2 3 4 8 7 6 5 logic circuit v cc c t reset mb3771 1 2 3 4 8 7 6 5 r 1 r 2 logic circuit
mb3771 8 3. arbitrary voltage supply monitor (1) case: v cc 18 v ? detection voltage can be set by r 1 and r 2 . detection voltage = (r 1 + r 2 ) v sb /r 2 ? connect pin 7 to v cc when v cc less than 4.45 v. ? pin 7 can be opened when v cc greater than 4.45 v power dissipation can be reduced. note : hysteresis of 28 mv at v sb at termination is available. hysteresis width dose not depend on (r 1 + r 2 ). (2) monitoring v cc > 18 v ? detection voltage can be set by r 1 and r 2 detection voltage = (r 1 + r 2 ) v sb /r 2 ? the reset signal output is : = 0v (low level) and : = 5 v (high level). v cc voltage cannot be output. do not pull up reset to v cc . ? changing the resistance ratio between r 4 and r 5 changes the constant voltage output, thereby changing the voltage of the high level reset output. note that the constant voltage output should not exceed 18 v. ? the 5 v output can be used as a power supply for control circuits with low current consumption. ? in setting the r 3 resistance level, caution should be given to the power consumption in the resistor. the table below lists sample resistance values for reference (using 1/4 w resistance). ? values are actual measured values (using i outc = 100 m a, v olc = 0.4 v). lowering the resistance value of r 3 reduces the minimum supply voltage of the reset output, but requires resistance with higher allowable loss. v cc (v) detection voltage (v) reset output min. power supply voltage (v) r 1 (m w w w w ) r 2 (k w w w w ) r 3 (k w w w w ) output current (ma) 140 100 6.7 1.6 20 110 < 0.2 100 81 3.8 1.3 20 56 < 0.5 40 33 1.4 0.51 20 11 < 1.6 v cc c t reset mb3771 1 2 3 4 8 7 6 5 r 1 r 2 v cc c t reset 1 2 3 4 8 7 6 5 r 3 r 1 r 2 r 4 : r 5 : 33 k w 0.47 m f 100 k w 5 v output(stablized)
mb3771 9 4. 5 v and 12 v power supply monitor (2 types of power supply monitor v cc1 = 5 v, v cc2 =12 v) ? 5 v is monitored by v sa . detection voltage is about 4.2 v ? 12 v is monitored by v sb . when r 1 = 390 k w and r 2 = 62 k w , detection voltage is about 9.0 v.generally the detection voltage is determined by the following equation. detection voltage = (r 1 + r 2 ) v sb /r 2 5. 5 v and 12 v power supply monitor (reset signal is generated by 5 v, v cc1 = 5 v, v cc2 = 12 v) ? 5 v is monitored by v sa , and generates reset signal when vsa detects voltage sagging. ? 12 v is monitored by v sc , and generates its detection signal at out c . ? the detection voltage of 12 v monitoring and its hysterisis is determined by the following equations. detection voltage = r 1 + r 2 + r 3 v sc (8.95 v in the circuit above) r 2 + r 3 hysterisis width = r 1 (r 3 - r 3 // r 4 ) v sc (200 mv in the circuit above) (r 2 + r 3 ) (r 2 + r 3 // r 4 ) v cc2 c t mb3771 1 2 3 4 8 7 6 5 r 1 : 390 k w r 2 : 62 k w reset v cc1 logic circuit v cc2 c t mb3771 1 2 3 4 8 7 6 5 r 1 : 390 k w r 2 : 33 k w reset v cc1 irq r l : 10 k w r 5 : 100 k w r 3 : 30 k w r 4 : 510 k w or port logic circuit
mb3771 10 6. 5 v power supply monitor with forced reset input (v cc = 5 v) resin is an ttl compatible input. 7. 5 v power supply monitor with non-inverted reset in this case, comparator c is used to invert reset signal. outc is an open-collector output. rl is used an a pull-up resistor. 8. supply voltage monitoring with delayed trigger when the voltage shown in the diagram below is applied at v cc , the minimum value of the input pulse width is increased to 40 m s (when c 1 = 1000 pf). the formula for calculating the minimum value of the input pulse width [t pi ] is: t pi [ m s] : = 4 10 -2 c 1 [pf] resin c t mb3771 1 2 3 4 8 7 6 5 reset v cc logic circuit c t mb3771 1 2 3 4 8 7 6 5 r l : 10 k w v cc reset c t mb3771 1 2 3 4 8 7 6 5 v cc t p reset c 1 5 v 4 v
mb3771 11 9. dual (positive/negative) power supply voltage monitoring (v cc = 5 v, v ee = negative power supply) monitors a 5 v and a negative (any given level) power supply. r 1 , r 2 , and r 3 should be the same value. detection voltage = v sb - v sb r 4 /r 3 example if v ee = - 5 v, r 4 = 91 k w then the detected voltage = - 4.37 v in cases where v ee may be output when v cc is not output, it is necessary to use a schottky barrier diode (sbd). 10. reference voltage generation and voltage sagging detection (1) 9v reference voltage generation and 5v/9v monitoring detection voltage = 7.2 v in the above examples, the output voltage and the detection voltage are determined by the following equations: detection voltage = (r 1 + r 2 ) v sb /r 2 c t mb3771 1 2 3 4 8 7 6 5 reset v cc v ee 0.22 m f r 4 r 5 : 5.1 k w r 3 : 20 k w r 1 : 20 k w r 2 : 20 k w sbd c t mb3771 1 2 3 4 8 7 6 5 reset v cc : 5 v 0.47 m f r 5 : 3 k w r 3 : 7.5 k w r 1 : 300 k w r 2 : 62 k w r 4 : 1.2 k w 15 v 9 v ( @ 50 ma)
mb3771 12 (2) 5 v reference voltage generation and 5v monitoring (no.1) detection voltage = 4.2 v in the above examples, the output voltage and the detection voltage are determined by the following equations: output voltage = (r 3 + r 4 ) v sc /r 4 (3) 5 v reference voltage generation and 5 v monitoring (no. 2) the value of r 1 should be calculated from the current consumption of the mb3771, the current flowing at r 2 and r 3 , and the 5 v output current. the table below provides sample resistance values for reference. (4) 1.245 v reference voltage generation and 5 v monitoring resistor r 1 determines reference current. using 1.2 k w as r 1 , reference current is about 2 ma. v cc (v) r 1 (k w ) output current (ma) 40 11 < 1.6 24 6.2 < 1.4 15 4.7 < 0.6 c t mb3771 1 2 3 4 8 7 6 5 reset 0.47 m f r 5 : 3 k w r 3 : 3.6 k w r 4 : 1.2 k w 15 v 5 v( @ 50 ma) c t 1 2 3 4 8 7 6 5 reset v cc 0.47 m f r 3 : 33 k w r 1 r 2 : 100 k w 5 v gnd c t 1 2 3 4 8 7 6 5 reset v cc (5 v) 0.47 m f r 1 : 10 k w gnd reference voltage 1.245 v typ
mb3771 13 11. low voltage and over voltage detection (v cc = 5 v) v sh has no hysteresis. when over voltage is detected, reset is held in the constant time as well as when low voltage is detected. v sl = (r 1 + r 2 ) v sb /r 2 v sh = (r 3 + r 4 ) v sc /r 4 12. detection of abnormal state of power supply system (v cc = 5 v) ? this example circuit detects abnormal low/over voltage of power supply voltage and is indicated by led indicator. led is reset by the clear key. ? the detection levels of low/over voltages are determined by v sa , and r 1 and r 2 respectively. c t 1 2 3 4 8 7 6 5 reset v cc r 1 mb3771 r 2 r 3 r 4 reset v cc v sl v sh 1 2 3 4 8 7 6 5 v cc r 1 mb3771 r 3 : 620 w r 4 : 1 k w to 100 k w clear r 2 led
mb3771 14 13. back-up power supply system (v cc = 5 v) ? use cmos logic and connect v dd of cmos logic with v cco . ? the back-up battery works after cs goes high as v 2 < v 1 . ? during t po , memory access is prohibited. ? css threshold voltage v 1 is determined by the following equation: v 1 = v f + (r 1 + r 2 + r 3 ) v sb /r 3 when v 1 is 4.45 v or less, connect 7 pin with v cc . when v 1 is 4.45 v or more, 7 pin can be used to open. ? the voltage to change v 2 is provided as the following equation: v 2 = v f + (r 1 + r 2 + r 3 ) v sc / (r 2 + r 3 ) however, please set v 2 to 3.5 v or more. v cc v 1 v 2 cs v cco t po t t t 1 2 3 4 8 7 6 5 v cc mb3771 r 3 : 56 k w c t r 2 : 6.2 k w r 1 : 100 k w r 4 >1 k w r 5 : 100 k w r 6 : 100 k w v cco cs d 1 v f 0.6 v *: diode has been added to prevent comp.c from malfunctionig when v cc voltage is low. set v 1 and v 2 with care given to v f temperature characteristics (typically negative temperature characteristics).
mb3771 15 n n n n typical characteristics (continued) 700 600 500 400 300 200 100 0 0 5 10 15 20 85 c 25 c - 40 c 85 c - 40 c 25 c 700 600 500 400 300 200 100 0 0 5 10 15 20 85 c 25 c - 40 c 85 c 5 4 3 2 1 0 0123 45 ta = 25 c - 40 c 85 c 4.0 - 50 - 25 0 25 50 75 100 4.1 4.2 4.3 4.4 4.5 v sah v sal 1.20 - 50 - 25 0 25 50 75 100 1.25 1.30 v sbh v sbl 1.20 - 50 - 25 0 25 50 75 100 1.25 1.30 - 40 c 25 c ta = ta = power supply current i cc1 ( m a) power supply current vs. power supply voltage detection voltage (v sc ) vs. anbient temperature power supply current vs. power supply voltage output (reset ) voltage vs. power supply voltage power supply voltage v cc (v) power supply voltage v cc (v) power supply voltage v cc (v) detection voltage v sc (v) detection voltage v sbh ,v sbl (v) power supply current i cc2 ( m a) output voltage v reset (v) detection voltage v sah ,v sal (v) anbient temperature ta ( c) detection voltage (v sb ) vs. anbient temperature anbient temperature ta ( c) detection voltage (v sa ) vs. anbient temperature anbient temperature ta ( c)
mb3771 16 (continued) 1.27 1.26 1.25 1.24 1.23 1.22 1.21 1.20 0 5 10 15 20 0 5 10 15 20 0102030 50 40 0 - 5 - 10 - 15 5.0 4.5 4.0 1.5 1.0 0.5 0 2.0 1.0 0 1.0 0.5 0 10 1 100 m 10 m 1 m 100 m 10 m 1 m 10 p 100 p 1000 p 0.01 m 1 p 0.1 m 1 m 10 m 100 m 0 5 10 15 20 v sbh v sc v sbl ta = 85 c 25 c ta = - 40 c ta = 85 c 25 c 85 c 25 c - 40 c ta = 85 c - 40 c - 40 c - 40 c 25 c 85 c ta = 25 c power supply voltage v cc (v) power supply voltage v cc (v) output current i reset ( m a) reset voltage (reset ) vs. output current detection voltage (v sb , v sc ) vs. power supply voltage output (reset ) voltage vs. output current output sink current i reset (ma) output sink current i outc (ma) output voltage (out c ) vs. output current output voltage v ohr (v) output voltage v olr (v) output voltage v olc (v) detection voltage v sc , v sbl ,v sbh (v) reset hold time vs. power supply voltage (c t = 0.01 m f) c t pin capacitance vs. reset hold time reset hold time t po (ms) reset hold time t po (s) ct pin capacitance c t (f)
mb3771 17 n n n n notes on use ? take account of common impedance when designing the earth line on a printed wiring board. ? take measures against static electricity. - for semiconductors, use antistatic or conductive containers. - when storing or carrying a printed circuit board after chip mounting, put it in a conductive bag or container. - the work table, tools and measuring instruments must be grounded. - the worker must put on a grounding device containing 250 k w to 1 m w resistors in series. ? do not apply a negative voltage - applying a negative voltage of - 0.3 v or less to an lsi may generate a parasitic transistor, resulting in malfunction. n n n n ordering information part number package remarks mb3771p 8-pin plastic dip (dip-8p-m01) mb3771ps 8-pin plastic sip (sip-8p-m03) mb3771pf 8-pin plastic sop (fpt-8p-m01)
mb3771 18 n n n n package dimensions (continued) 8-pin plastic dip (dip-8p-m01) c 1994 fujitsu limited d08006s-2c-3 0.89 +0.35 ?.30 ?.30 +0.40 9.40 ? 0.99 1.52 +0.30 ? +.014 ?012 .035 .370 ?012 +.016 .060 ? +.012 +.012 ? .039 4.36(.172)max 3.00(.118)min 2.54(.100) typ 0.46?.08 (.018?003) 0.25?.05 (.010?002) 0.51(.020)min 7.62(.300) typ 15?ax 1 pin index 6.20?.25 (.244?010) +0.30 dimensions in mm (inches) . note : the values in parentheses are reference values.
mb3771 19 (continued) (continued) 8-pin plastic sip (sip-8p-m03) c 1994 fujitsu limited s08010s-3c-2 1.52 +0.30 ? index-1 index-2 ?.35 +0.15 19.65 ? +0.30 0.99 +.006 ?014 .774 .039 ? +.012 +.012 ? .060 2.54(.100) typ 0.50?.08 (.020?003) 4.00?.30 (.157?012) 8.20?.30 (.323?012) 6.20?.25 (.244?010) (.128?010) 3.26?.25 0.25?.05 (.010?002) dimensions in mm (inches) . note : the values in parentheses are reference values.
mb3771 20 (continued) 8-pin plastic sop (fpt-8p-m01) note 1) *1 : these dimensions include resin protrusion. note 2) *2 : these dimensions do not include resin protrusion. note 3) pins width and pins thickness include plating thickness. note 4) pins width do not include tie bar cutting remainder. c 2002 fujitsu limited f08002s-c-6-7 0.13(.005) m details of "a" part 7.800.40 5.300.30 (.209.012) (.307.016) .250 C.008 +.010 C0.20 +0.25 6.35 index 1.27(.050) 0.10(.004) 14 5 8 0.470.08 (.019.003) C0.04 +0.03 0.17 .007 +.001 C.002 "a" 0.25(.010) (stand off) 0~8 ? (mounting height) 2.00 +0.25 C0.15 .079 +.010 C.006 0.500.20 (.020.008) 0.600.15 (.024.006) 0.10 +0.10 C0.05 C.002 +.004 .004 * 1 0.10(.004) * 2 dimensions in mm (inches) . note : the values in parentheses are reference values.
mb3771 fujitsu limited all rights reserved. the contents of this document are subject to change without notice. customers are advised to consult with fujitsu sales representatives before ordering. the information, such as descriptions of function and application circuit examples, in this document are presented solely for the purpose of reference to show examples of operations and uses of fujitsu semiconductor device; fujitsu does not warrant proper operation of the device with respect to use based on such information. when you develop equipment incorporating the device based on such information, you must assume any responsibility arising out of such use of the information. fujitsu assumes no liability for any damages whatsoever arising out of the use of the information. any information in this document, including descriptions of function and schematic diagrams, shall not be construed as license of the use or exercise of any intellectual property right, such as patent right or copyright, or any other right of fujitsu or any third party or does fujitsu warrant non-infringement of any third-partys intellectual property right or other right by using such information. fujitsu assumes no liability for any infringement of the intellectual property rights or other rights of third parties which would result from the use of information contained herein. the products described in this document are designed, developed and manufactured as contemplated for general use, including without limitation, ordinary industrial use, general office use, personal use, and household use, but are not designed, developed and manufactured as contemplated (1) for use accompanying fatal risks or dangers that, unless extremely high safety is secured, could have a serious effect to the public, and could lead directly to death, personal injury, severe physical damage or other loss (i.e., nuclear reaction control in nuclear facility, aircraft flight control, air traffic control, mass transport control, medical life support system, missile launch control in weapon system), or (2) for use requiring extremely high reliability (i.e., submersible repeater and artificial satellite). please note that fujitsu will not be liable against you and/or any third party for any claims or damages arising in connection with above-mentioned uses of the products. any semiconductor devices have an inherent chance of failure. you must protect against injury, damage or loss from such failures by incorporating safety design measures into your facility and equipment such as redundancy, fire protection, and prevention of over-current levels and other abnormal operating conditions. if any products described in this document represent goods or technologies subject to certain restrictions on export under the foreign exchange and foreign trade law of japan, the prior authorization by japanese government will be required for export of those products from japan. f0308 ? fujitsu limited printed in japan

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