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? 1 c 8 ??? max6581 ________________________________________________________________ _ maxim integrated products _ _ 1 19-5260; rev 0; 8/10 ? / ?? max6581 ??????? 7 ????????? ?????????? ???????????? ??? (alert overt) ?????? ???? 2 ??? smbus? ? ( ???? ???? ) ????? max6581 -40 c +125 c ?? 24 ? 4mm x 4mm qfn ??? s 8 ?? 7 ??? 1 ? s 11 0.125 c ? s + 60 c +100 c ??? 1 c ( ? ) ?? ( ?? ) s -64 c + 150 c ??? s ??? / s smbus/i 2 c ?? s ? (alert overt) s ??? ? ?? ?? ? ? smbus intel corp. ?? + ?? (pb)/ rohs ??? * ep = ?? ** ??? ? -40 c +125 c ?? ??? ??????????????? ????? maxim ? 10800 852 1249 ( ) 10800 152 1249 ( ) maxim ? china.maxim-ic.com ? part slave _ address pin-package operating _ temperature _ range measured _ temperature _ range max6581tg9a+ 0x9a 24 tqfn-ep* -40n c to +125nc -64n c to +150nc max6581tg9c+** 0x9c 24 tqfn-ep* -40n c to +125nc -64n c to +150nc max6581tg9e+** 0x9e 24 tqfn-ep* -40n c to +125nc -64n c to +150nc max6581tg98+** 0x98 24 tqfn-ep* -40n c to +125nc -64n c to +150nc
? 1 c 8 ??? max6581 2 _ _ _ ______________________________________________________________________________________ stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. (all voltages referenced to gnd) v cc , smbclk, smbdata, alert, overt, stby to gnd ..........................................-0.3v to +4v dxp_ to gnd ............................................ -0.3v to (v cc + 0.3v) dxn_ to gnd ........................................... -0.3v to (v cc + 0.3v) smbdata, alert, overt current .................. -1ma to +50ma dxn_ current .................................................................... q 1ma continuous power dissipation (t a = +70 nc) 24-pin thin qfn (derate 27.8mw/ n c above +70 n c) . . 2222mw package junction-to-ambient thermal resistance ( b ja ) (note 1) ............................................................36.0 nc/w package junction-to-case thermal resistance ( b jc ) (note 1) ..............................................................3.0 nc/w esd protection (all pins, human body model) ................... q 2kv operating temperature range ........................ -40 n c to +125nc junction temperature .....................................................+150 nc storage temperature range .......................... -65 n c to +150nc lead temperature (soldering, 10s) ...............................+300 nc soldering temperature (reflow) ......................................+260 nc electrical _ characteristics (v cc = +3.0v to +3.6v, t a = -40 n c to +125nc, unless otherwise noted. typical values are at v cc = +3.3v and t a = +25 n c.) (note 2) absolute _ maximum _ ratings note _ 1: package thermal resistances were obtained using the method described in jedec specification jesd51-7, using a four- layer board. for detailed information on package thermal considerations, refer to china.maxim-ic.com/thermal-tutorial. parameter symbol conditions min typ max units supply voltage v cc 3.0 3.6 v standby supply current i ss smbus static 4 15 fa operating current i cc1 during conversion, rc off 500 600 fa i cc2 during conversion, rc on 550 650 temperature resolution 11 bits 0.125 nc 3-sigma temperature accuracy (remote channels 1C7) v cc = 3.3v t a = +30 n c to +85nc, t rj = +60 n c to +100nc -0.85 +0.85 nc t a , t rj = -40 n c to +125nc -1.2 +1.2 t a = +30 n c to +85nc, t rj = +100 n c to +150nc -2.5 +2.5 3-sigma temperature accuracy (local) v cc = 3.3v t a = +30 n c to +85nc -1 +1 nc t a = -40 n c to +125nc -2 +2 t a = 0 n c to +150nc -3 +3 6-sigma temperature accuracy (remote channels 1C7) v cc = 3.3v t a = +30 n c to +85nc, t rj = +60 n c to +100nc -1 +1 nc t a , t rj = -40 n c to +125nc -2 +2 t a = +30 n c to +85nc, t rj = +100 n c to +125nc -2.75 +2.75 6-sigma temperature accuracy (local) v cc = 3.3v t a = +30 n c to +85nc -1.5 +1.5 nc t a = -40 n c to +125nc -2.5 +2.5 t a = 0 n c to +150nc -3.5 +3.5 supply sensitivity of temperature accuracy q0.2 nc/v
? 1 c 8 ??? max6581 _______________________________________________________________________________________ _ _ 3 electrical _ characteristics _ (continued) (v cc = +3.0v to +3.6v, t a = -40 n c to +125nc, unless otherwise noted. typical values are at v cc = +3.3v and t a = +25 n c.) (note 2) parameter symbol conditions min typ max units conversion time per channel t conv resistance cancellation mode off 95 125 156 ms resistance cancellation mode on or beta compensation on 190 250 312 remote-diode source current i rj high level resistance cancellation mode off 80 100 120 fa low level 8 10 12 high level resistance cancellation mode on or beta compensation on 160 200 240 low level 16 20 24 dxp_ and dxn_ leakage current standby mode 100 na undervoltage lockout threshold uvlo falling edge of v cc disables adc 2.25 2.80 2.95 v undervoltage lockout hysteresis 90 mv power-on-reset (por) threshold v cc falling edge 1.3 2.0 2.2 v por threshold hysteresis 90 mv alert _ and _ overt output low voltage v ol i sink = 1ma 0.01 v i sink = 6ma 0.3 input leakage current i leak -1 +1 fa smbus _ interface, _ stby logic input low voltage v il v cc = 3.6v 0.8 v logic input high voltage v ih v cc = 3.0v 2.2 v input leakage current -1 +1 fa output low voltage v ol i sink = 6ma 0.1 v input capacitance c in 5 pf smbus-compatible _ timing _ (figures _ 3 _ and _ 4) _ (note _ 3) serial-clock frequency f smbclk (note 4) 400 khz bus free time between stop and start condition t buf f smbclk = 400khz 1.6 fs start condition setup time f smbclk = 400khz 0.6 fs repeated start condition setup time t su:sta 90% of smbclk to 90% of smbdata, f smbclk = 400khz 50 ns start condition hold time t hd:sta 10% of smbdata to 90% of smbclk, f smbclk = 400khz 0.6 fs stop condition setup time t su:sto 90% of smbclk to 90% of smbdata, f smbclk = 400khz 0.6 fs clock low period t low 10% to 10%, f smbclk = 400khz 1 fs clock high period t high 90% to 90% 0.6 fs data-in hold time t hd:dat 0 0.9 us data-in setup time t su:dat (note 5) 100 ns
? 1 c 8 ??? max6581 4 _ _ _ ______________________________________________________________________________________ ? (v cc = +3.3v, v stby = v cc , t a = +25nc, unless otherwise noted.) electrical _ characteristics _ (continued) (v cc = +3.0v to +3.6v, t a = -40 n c to +125nc, unless otherwise noted. typical values are at v cc = +3.3v and t a = +25 n c.) (note 2) note _ 2: all parameters are tested at t a = +85 n c. specifications over temperature are guaranteed by design. note _ 3: timing specifications are guaranteed by design. note _ 4: the serial interface resets when smbclk is low for more than t timeout . note _ 5: a transition must internally provide at least a hold time to bridge the undefined region (300ns max) of smbclks falling edge. standby supply current vs. supply voltage max6581 toc01 supply voltage (v) standby supply current (a) 3.5 3.4 3.3 3.2 3.1 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 3.0 3.6 hardware or software standby supply current average operating supply current vs. supply voltage max6581 toc02 supply voltage (v) average operating supply current (a) 3.5 3.4 3.1 3.2 3.3 365 370 375 380 385 390 395 400 360 3.0 3.6 resistance cancellation off remote-diode temperature error vs. remode-diode temperature max6581 toc03 remote-diode temperature (c) remote-diode temperature error (c) 110 90 50 70 30 10 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 -4 -5 -6 -7 -8 -9 -10 -10 130 parameter symbol conditions min typ max units receive smbclk/smbdata rise time t r 300 ns receive smbclk/smbdata fall time t f 300 ns data-out hold time t dh 50 ns pulse width of spike suppressed t sp 0 50 ns smbus timeout t timeout smbdata low period for interface reset 25 37 45 ms
? 1 c 8 ??? max6581 _______________________________________________________________________________________ _ _ 5 ? ( ) (v cc = +3.3v, v stby = v cc , t a = +25nc, unless otherwise noted.) local temperature error vs. die temperature max6581 toc04 die temperature (c) local temperature error (c) 90 80 60 70 10 20 30 40 50 0 -4 -3 -2 -1 0 1 2 3 4 5 -5 -10 100 remote-diode temperature error vs. power-supply noise frequency max6581 toc05 power-supply noise frequency (mhz) remote-diode temperature error (c) 1 0.1 0.01 -4 -3 -2 -1 0 1 2 3 4 5 -5 0.001 10 100mv p-p t rj = +85c local temperature error vs. power-supply noise frequency max6581 toc06 power-supply noise frequency (mhz) local temperature error (c) 1 0.1 0.01 -4 -3 -2 -1 0 1 2 3 4 5 -5 0.001 10 100mv p-p remote-diode temperature error vs. capacitance max6581 toc07 capacitance (nf) remote-diode temperature error (c) 10 -4 -3 -2 -1 0 1 2 3 4 5 -5 1 100 100mv p-p t rj = +85c remote-diode temperature error vs. resistance max6581 toc08 resistance (i) remote-diode temperature error (c) 90 80 60 70 20 30 40 50 10 0 5 10 15 20 25 30 35 40 45 50 -5 0 100 t rj = +85c resistance cancellation off resistance cancellation on
? 1 c 8 ??? max6581 6 _ _ _ ______________________________________________________________________________________ ? 1 dxp2 ? 2 ????? adc ? dxp2 ??????? ????? dxp2 dxn2 ?? dxp2 dxn2 ?? 100pf ?? 2 dxn2 ? 2 ????? 2 ????? dxn2 ? 2 ?? ?? pnp ( ? cpu ) pnp ?? dxn2 ???? dxn2 dxp2 ?? dxp2 dxn2 ?? 100pf ?? 3 dxp3 ? 3 ????? adc ? dxp3 ??????? ????? dxp3 dxn3 ?? dxp3 dxn3 ?? 100pf ?? 4 dxn3 ? 3 ????? 3 ????? dxn3 ? 3 ?? ?? pnp ( ? cpu ) pnp ?? dxn3 ???? dxn3 dxp3 ?? dxp3 dxn3 ?? 100pf ?? 5 dxp4 ? 4 ????? adc ? dxp4 ??????? ???? dxp4 dxn4 ?? dxp4 dxn4 ? ? 100pf ?? 6, 22 n.c. ? n.c. ?? 23 24 22 21 8 7 9 dxn2 dxn3 dxp4 n.c. 10 dxp2 v cc i.c. stby alert dxp7 1 2 n.c. 4 5 6 1718 16 14 13 dxp1 dxn1 dxn6 dxn5 dxp5 dxn4 max6581 dxp3 overt 3 15 gnd 20 11 dxp6 smbclk 19 12 dxn7 smbdata top view *ep = exposed pad, connect to gnd *ep
? 1 c 8 ??? max6581 _______________________________________________________________________________________ _ _ 7 ? ( ) 7 dxn4 ? 4 ????? 4 ????? dxn4 ? 4 ?? ?? pnp ( ? cpu ) pnp ?? dxn4 ???? dxn4 dxp4 ?? dxp4 dxn4 ?? 100pf ?? 8 dxp5 ? 5 ????? adc ? dxp5 ??????? ????? dxp5 dxn5 ?? dxp5 dxn5 ?? 100pf ?? 9 dxn5 ? 5 ????? 5 ????? dxn5 ? 5 ?? ?? pnp ( ? cpu ) pnp ?? dxn5 ???? dxn5 dxp5 ?? dxp5 dxn5 ?? 100pf ?? 10 dxn6 ? 6 ????? 6 ????? dxn6 ? 6 ?? ?? pnp ( ? cpu ) pnp ?? dxn6 ???? dxn6 dxp6 ?? dxp6 dxn6 ?? 100pf ?? 11 dxp6 ? 6 ????? adc ? dxp6 ??????? ????? dxp6 dxn6 ?? dxp6 dxn6 ?? 100pf ?? 12 dxn7 ? 7 ????? 7 ????? dxn7 ? 7 ?? ?? pnp ( ? cpu ) pnp ?? dxn7 ???? dxn7 dxp7 ?? dxp7 dxn7 ?? 100pf ?? 13 dxp7 ? 7 ????? adc ? dxp7 ??????? ????? dxp7 dxn7 ?? dxp7 dxn7 ?? 100pf ?? 14 stby ??? stby ??? max6581 ?????? ?????????? 15 i.c. ?? i.c. ? v cc i.c. v cc ?? 16 overt ???????????? overt ?? ?? 17 v cc ???? 0.1 f ? gnd 18 alert ??? smbus ( ) ????? alert ?? alert ???? 19 smbdata smbus / smbdata ? 20 smbclk smbus ?? smbclk ?
? 1 c 8 ??? max6581 8 _ _ _ ______________________________________________________________________________________ ?? max6581 ??????? ????????? ???? 1 C 7 ??? ( ? 1) max6581 ? smbus ????? ?? (alert) ??? (overt alert) ? alert ??? alert alert ? overt ?????? adc ?? max6581 ????? 1 ???? ?? 2 ?? 3 C 7 ???? ?????? ?? ???? ? stop ? 1 ??? stby ?????? ? adc ?? 4 a ? ????? ?? smbus ?? ?? smbus ????? smbus ? start ???? smbus ?? ??????? ?????????? ????? max6581 ????? ????? (rc) ??? ?? n r av cc1 cc2 n r n r n 1 2 n i i i n 2 n 1 n 2 n 1 + = + + + + + n n = ???? n r = rc ???? i av = ??? i cc1 = ??????? i cc2 = rc ??????? ? ( ) 21 gnd ? 23 dxp1 ? 1 ????? adc ? dxp1 ??????? ???? dxp1 dxn1 ?? dxp1 dxn1 ? ? 100pf ?? 24 dxn1 ? 1 ????? 1 ????? dxn1 ? 1 ?? ?? pnp ( ? cpu ) pnp ?? dxn1 ???? dxn1 dxp1 ?? dxp1 dxn1 ?? 100pf ?? ep ?? ep gnd
? 1 c 8 ??? max6581 _______________________________________________________________________________________ _ _ 9 ? 1. ?? v cc dxn2 dxp2 dxn1 dxp1 dxn3 dxp3 dxn4 dxp4 dxn5 dxp5 dxn6 dxp6 local transistor smbclk smbdata input buffer ref counter smbus interface count + - dxn7 dxp7 i rj register bank command byte remote temperatures local temperatures stby overt alert threshold overt threshold alert response address alert alarm alu max6581
? 1 c 8 ??? max6581 10 _ _ _ _____________________________________________________________________________________ smbus ?? ?? max6581 ??? 8 ? ???????? smbus 2 ?????? ?? smbus ??? max6581 ?? smbus ????? ???? ( ? 2) ????? ?????t?? ???????? ??????t ????? 3 ? smbus ???? 4 ? smbus ???? ????? 11 (1 lsb = 0.125 c) 8 (msb) ????????? ???? 3 ?????? ??????? ???? ???? ??? smbus ??? ( ?? 37ms) ???? 1 ????? ( ? ) ?? 2 ?????? ( ? ) ?? ? 2. smbus s address wr ack ack p data ack command 7 bits 1 8 bits 8 bits slave address: equivalent to chip-select line of a 3-wire interface data byte: data goes into the register set by the command byte (to set thresholds, configuration masks, and sampling rate) write-byte format s address address wr ack ack p s rd ack /// data command 7 bits 7 bits 8 bits 8 bits read-byte format slave address: equivalent to chip select line command byte: selects which register you are reading from s p address wr ack ack command 7 bits 8 bits send-byte format command byte: sends command with no data, usually used for one-shot command s p address rd ack /// data 7 bits 8 bits receive-byte format data byte: reads data from the register commanded by the last read-byte or write-byte transmission; also used for smbus alert response return address slave address: repeated due to change in data- flow direction data byte: reads from the register set by the command byte s = start condition p = stop condition shaded = slave transmission /// = not acknowledged
? 1 c 8 ??? max6581 ______________________________________________________________________________________ _ _ 11 ? 3. smbus ?? ? 4. smbus ?? 1. ??? ( ? ) ?? smbclk a = start condition b = msb of address clocked into slave c = lsb of address clocked into slave d = r/w bit clocked into slave a b c d e f g h i j smbdata t su:sta t hd:sta t low t high t su:dat t su:sto t buf l m k e = slave pulls smbdata line low f = acknowledge bit clocked into master g = msb of data clocked into slave h = lsb of data clocked into slave i = slave pulls data line low j = acknowledge clocked into master k = acknowledge clock pulse l = stop condition m = new start condition smbclk a b c d e f g h i smbdata t su:sta t hd:sta t low t high t su:dat t hd:dat t su:sto t buf a = start condition b = msb of address clocked into slave c = lsb of address clocked into slave d = r/w bit clocked into slave e = slave pulls smbdata line low j k f = acknowledge bit clocked into master g = msb of data clocked into master h = lsb of data clocked into master i = acknowledge clock pulse j = stop condition k = new start condition temperature _ ( nc) digital _ output normal _ format extended _ format diode fault (open or short) 1111 1111 1111 1111 > +191 1111 1111 1111 1111 +191 1111 1111 1111 1111 +150 1101 0110 1100 1100 +127 1011 1111 1011 1111 +25 0101 1001 1001 1001 0 0100 0000 0100 0000 -39 0001 1001 0101 1001 -64 0000 0000 0000 0000 < -64 0000 0000 0000 0000
? 1 c 8 ??? max6581 12 _ _ _ _____________________________________________________________________________________ 2. ????? ( ? ) ?? 3. ??? x = ?? temperature _ (nc) digital _ output 0 000x xxxx +0.125 001x xxxx +0.250 010x xxxx +0.375 011x xxxx +0.500 100x xxxx +0.625 101x xxxx +0.750 110x xxxx +0.875 111x xxxx register address (hex) por _ value (hex) read/ write description remote 1 01 00 r read channel 1 remote temperature remote 2 02 00 r read channel 2 remote temperature remote 3 03 00 r read channel 3 remote temperature remote 4 04 00 r read channel 4 remote temperature remote 5 05 00 r read channel 5 remote temperature remote 6 06 00 r read channel 6 remote temperature local 07 00 r read local temperature remote 7 08 00 r read channel 7 remote temperature remote 1 extended bits* 09 00 r read channel 1 remote-diode extended temperature manufacturer id 0a 4d r read manufacturer id revision id 0f 00 r read revision id remote 1 alert high limit 11 7f r/w read/write channel 1 remote-diode alert high-temperature threshold limit remote 2 alert high limit 12 7f r/w read/write channel 2 remote-diode alert high-temperature threshold limit remote 3 alert high limit 13 64 r/w read/write channel 3 remote-diode alert high-temperature threshold limit remote 4 alert high limit 14 64 r/w read/write channel 4 remote-diode alert high-temperature threshold limit remote 5 alert high limit 15 64 r/w read/write channel 5 remote-diode alert high-temperature threshold limit remote 6 alert high limit 16 64 r/w read/write channel 6 remote-diode alert high-temperature threshold limit local alert high limit 17 5a r/w read/write local-diode alert high-temperature threshold limit remote 7 alert high limit 18 64 r/w read/write channel 7 remote-diode alert high-temperature threshold limit local overt high limit 20 50 r/w read/write channel local-diode overtemperature threshold limit
? 1 c 8 ??? max6581 ______________________________________________________________________________________ _ _ 13 3. ??? ( ) * ?? register address (hex) por _ value (hex) read/ write description remote 1 overt high limit 21 6e r/w read/write channel 1 remote-diode overtemperature threshold limit remote 2 overt high limit 22 6e r/w read/write channel 2 remote-diode overtemperature threshold limit remote 3 overt high limit 23 6e r/w read/write channel 3 remote-diode overtemperature threshold limit remote 4 overt high limit 24 7f r/w read/write channel 4 remote-diode overtemperature threshold limit remote 5 overt high limit 25 5a r/w read/write channel 5 remote-diode overtemperature threshold limit remote 6 overt high limit 26 5a r/w read/write channel 6 remote-diode overtemperature threshold limit remote 7 overt high limit 27 5a r/w read/write channel 7 remote-diode overtemperature threshold limit alert low limits (all channels) 30 00 r/w read/write all channels alert low-temperature threshold limit configuration 41 00 r/w read/write configuration alert mask 42 00 r/w read/write alert mask overt mask 43 00 r/w read/write overt mask alert high status 44 00 r read alert high status overt status 45 00 r read overt status diode fault status 46 00 r read diode fault status alert low status 47 00 r read alert low status alert low disable 48 ff r/w read/write alert low disable resistance cancellation 4a 00 r/w read/write resistance cancellation enable bits (1 = on, 0 = off) transistor ideality 4b 00 r/w read/write ideality value for remote-sense transistor ideality select 4c 00 r/w read/write ideality value selection bits (1 = selected transistor ideality, 0 = 1.008) offset 4d 00 r/w read/write temperature offset value offset select 4e 00 r/w read/write offset value selection bits (1 = value in offset select register, 0 = 0) remote 1 extended bits* 51 00 r read channel 1 remote extended temperature remote 2 extended bits 52 00 r read channel 2 remote extended temperature remote 3 extended bits 53 00 r read channel 3 remote extended temperature remote 4 extended bits 54 00 r read channel 4 remote extended temperature remote 5 extended bits 55 00 r read channel 5 remote extended temperature remote 6 extended bits 56 00 r read channel 6 remote extended temperature local extended bits 57 00 r read local channel extended temperature
? 1 c 8 ??? max6581 14 _ _ _ _____________________________________________________________________________________ ?? ? ? dxp_ dxn_ max6581 ????? alert overt ???? ?? ?? 1 ????? 1 (ffh) max6581 ??? 4ms ??? ?? max6581 ???? ? ?? 17 ?? o? alert overt ?????? ???????? ( alert ?? ) ??? ??????? ( overt ) ? smbus ?? alert ?? ????? ( ?? ) ?? alert ?????? ??????? alert ? ?????? ????? alert ?? ????? alert (42h) ? alert ? 3 ?? por ?? alert ?? smbus ??????? ??????? ???????? (19h) ??????? ????? ?????? i 2 c ? (general call) ??? ??????? ??? alert ??????? ( ?? ) ?? ???? ? max6581 ? alert ? overt max6581 ???? overt ? ?????????? ?? overt overt ? ???? 4 c ?? ???????? ?????????? por ?? 3 ??? 8 ??? ( 3) ? max6581 ? por ??? 0000 0000 (00h) ? (41h) ? ( 4) ?? 7 (msb) ? max6581 ? ? (stop) ? ? ? 6 ? por ????? 5 smbus ? 1 ?????? ??? por ??? 0000 0000 (00h) alert ? (42h) alert ??? 5 [7:0] alert 6 ??? ???????? 0000 0000 (00h) overt ? (43h) 6 overt ?? 6 ? ? overt ????? ? 0000 0000 (00h)
? 1 c 8 ??? max6581 ______________________________________________________________________________________ _ _ 15 4. ? (41h) 5. alert ? (42h) 6. overt ? (43h) bit name por _ value function 7 (msb) stop 0 standby-mode control bit. if stop is set to logic 1, the max6581 stops converting and enters standby mode. 6 por 0 reset bit. set to logic 1 to put the device into its power-on state. this bit is self- clearing. 5 timeout 0 timeout enable bit. set to logic 0 to enable smbus timeout. 4 reserved 0 reserved. must be set to 0. 3 reserved 0 reserved. must be set to 0. 2 reserved 0 reserved. must be set to 0. 1 extrange 0 extended-range enable bit. set bit 1 to logic 1 to set the temperature and limit data range to -64 n c to +191n c. set bit 1 to logic 0 to set the range to 0n c to +255nc. 0 reserved 0 reserved. must be set to 0. bit name por _ value function 7 (msb) mask alert 7 0 channel 7 alert mask. set to logic 1 to mask channel 7 alert. 6 mask local alert 0 local alert mask. set to logic 1 to mask local channel alert. 5 mask alert 6 0 channel 6 alert mask. set to logic 1 to mask channel 6 alert. 4 mask alert 5 0 channel 5 alert mask. set to logic 1 to mask channel 5 alert. 3 mask alert 4 0 channel 4 alert mask. set to logic 1 to mask channel 4 alert. 2 mask alert 3 0 channel 3 alert mask. set to logic 1 to mask channel 3 alert. 1 mask alert 2 0 channel 2 alert mask. set to logic 1 to mask channel 2 alert. 0 mask alert 1 0 channel 1 alert mask. set to logic 1 to mask channel 1 alert. bit name por _ value function 7 (msb) mask overt 7 0 channel 7 remote-diode overt mask bit. set to logic 1 to mask channel 7 overt. 6 mask local overt 0 local overt mask. set to logic 1 to mask local channel overt. 5 mask overt 6 0 channel 6 remote-diode overt mask bit. set to logic 1 to mask channel 6 overt. 4 mask overt 5 0 channel 5 remote-diode overt mask bit. set to logic 1 to mask channel 5 overt. 3 mask overt 4 0 channel 4 remote-diode overt mask bit. set to logic 1 to mask channel 4 overt. 2 mask overt 3 0 channel 3 remote-diode overt mask bit. set to logic 1 to mask channel 3 overt. 1 mask overt 2 0 channel 2 remote-diode overt mask bit. set to logic 1 to mask channel 2 overt. 0 mask overt 1 0 channel 1 remote-diode overt mask bit. set to logic 1 to mask channel 1 overt.
? 1 c 8 ??? max6581 16 _ _ _ _____________________________________________________________________________________ ??? 4 ??? ( 7 10) alert ? ????????????? alert ????? overt ????? ?????? overt ???? ???????????? ? ( ) alert ???? ????????? alert ? ?? ??????? ??? ( ????? ) ???? alert ????? alert ?? alert ?????? ???? ??????? alert ??????????? (4 c) ??????? 4 c ?? ?? overt ??? 7. alert ??? (44h) bit name por _ state function 7 (msb) remote alert high 7 0 channel 7 remote-diode high-alert bit. this bit is set to logic 1 when the channel 7 remote-diode temperature exceeds the programmed temperature threshold limit in the remote 7 alert high limit register. 6 local alert high 0 local channel high-alert bit. this bit is set to logic 1 when the local temperature exceeds the temperature threshold limit in the local alert high limit register. 5 remote alert high 6 0 channel 6 remote-diode high-alert bit. this bit is set to logic 1 when the channel 6 remote-diode temperature exceeds the programmed temperature threshold limit in the remote 6 alert high limit register. 4 remote alert high 5 0 channel 5 remote-diode high-alert bit. this bit is set to logic 1 when the channel 5 remote-diode temperature exceeds the programmed temperature threshold limit in the remote 5 alert high limit register. 3 remote alert high 4 0 channel 4 remote-diode high-alert bit. this bit is set to logic 1 when the channel 4 remote-diode temperature exceeds the programmed temperature threshold limit in the remote 4 alert high limit register. 2 remote alert high 3 0 channel 3 remote-diode high-alert bit. this bit is set to logic 1 when the channel 3 remote-diode temperature exceeds the programmed temperature threshold limit in the remote 3 alert high limit register. 1 remote alert high 2 0 channel 2 remote-diode high-alert bit. this bit is set to logic 1 when the channel 2 remote-diode temperature exceeds the programmed temperature threshold limit in the remote 2 alert high limit register. 0 remote alert high 1 0 channel 1 remote-diode high-alert bit. this bit is set to logic 1 when the channel 1 remote-diode temperature exceeds the programmed temperature threshold limit in the remote 1 alert high limit register.
? 1 c 8 ??? max6581 ______________________________________________________________________________________ _ _ 17 8. overt ??? (45h) 9. ???? (46h) bit name por _ state function 7 (msb) remote overt 7 0 channel 7 remote-diode overtemperature status bit. this bit is set to logic 1 when the channel 7 remote-diode temperature exceeds the temperature threshold limit in the remote 7 overt high limit register. 6 local overt 0 local channel overtemperature status bit. this bit is set to logic 1 when the local temperature exceeds the temperature threshold limit in the local overt high limit register. 5 remote overt 6 0 channel 6 remote-diode overtemperature status bit. this bit is set to logic 1 when the channel 6 remote-diode temperature exceeds the temperature threshold limit in the remote 6 overt high limit register. 4 remote overt 5 0 channel 5 remote-diode overtemperature status bit. this bit is set to logic 1 when the channel 5 remote-diode temperature exceeds the temperature threshold limit in the remote 5 overt high limit register. 3 remote overt 4 0 channel 4 remote-diode overtemperature status bit. this bit is set to logic 1 when the channel 4 remote-diode temperature exceeds the temperature threshold limit in the remote 4 overt high limit register. 2 remote overt 3 0 channel 3 remote-diode overtemperature status bit. this bit is set to logic 1 when the channel 3 remote-diode temperature exceeds the temperature threshold limit in the remote 3 overt high limit register. 1 remote overt 2 0 channel 2 remote-diode overtemperature status bit. this bit is set to logic 1 when the channel 2 remote-diode temperature exceeds the temperature threshold limit in the remote 2 overt high limit register. 0 remote overt 1 0 channel 1 remote-diode overtemperature status bit. this bit is set to logic 1 when the channel 1 remote-diode temperature exceeds the temperature threshold limit in the remote 1 overt high limit register. bit name por _ state function 7 (msb) reserved 0 6 diode fault 7 0 channel 7 remote-diode fault bit. this bit is set to 1 when dxp7 and dxn7 are open circuit or when dxp7 is connected to v cc . 5 diode fault 6 0 channel 6 remote-diode fault bit. this bit is set to 1 when dxp6 and dxn6 are open circuit or when dxp6 is connected to v cc . 4 diode fault 5 0 channel 5 remote-diode fault bit. this bit is set to 1 when dxp5 and dxn5 are open circuit or when dxp5 is connected to v cc . 3 diode fault 4 0 channel 4 remote-diode fault bit. this bit is set to 1 when dxp4 and dxn4 are open circuit or when dxp4 is connected to v cc . 2 diode fault 3 0 channel 3 remote-diode fault bit. this bit is set to 1 when dxp3 and dxn3 are open circuit or when dxp3 is connected to v cc . 1 diode fault 2 0 channel 2 remote-diode fault bit. this bit is set to 1 when dxp2 and dxn2 are open circuit or when dxp2 is connected to v cc . 0 diode fault 1 0 channel 1 remote-diode fault bit. this bit is set to 1 when dxp1 and dxn1 are open circuit or when dxp1 is connected to v cc .
? 1 c 8 ??? max6581 18 _ _ _ _____________________________________________________________________________________ ? ????????? ( ?? ) (n) max6581 ??? n = 1.008 ( ? 1 C 7) ic ???? ?? pnp ( ?? ) dxp_ pnp ( ) dxn_ pnp ( ) ??? 1.008 ???? ??????? ( 11) ????? ??? 1.008 ???? 10. alert ??? (47h) bit name por _ state function 7 (msb) remote alert low 7 0 channel 7 remote-diode low-alert bit. this bit is set to logic 1 when the channel 7 remote-diode temperature falls below the programmed temperature threshold limit in the remote 7 alert low limit register. 6 local alert low 0 local channel remote-diode low-alert bit. this bit is set to logic 1 when the local channel remote-diode temperature falls below the programmed temperature threshold limit in the local alert low limit register. 5 remote alert low 6 0 channel 6 remote-diode low-alert bit. this bit is set to logic 1 when the channel 6 remote-diode temperature falls below the programmed temperature threshold limit in the remote 6 alert low limit register. 4 remote alert low 5 0 channel 5 remote-diode low-alert bit. this bit is set to logic 1 when the channel 5 remote-diode temperature falls below the programmed temperature threshold limit in the remote 5 alert low limit register. 3 remote alert low 4 0 channel 4 remote-diode low-alert bit. this bit is set to logic 1 when the channel 4 remote-diode temperature falls below the programmed temperature threshold limit in the remote 4 alert low limit register. 2 remote alert low 3 0 channel 3 remote-diode low-alert bit. this bit is set to logic 1 when the channel 3 remote-diode temperature falls below the programmed temperature threshold limit in the remote 3 alert low limit register. 1 remote alert low 2 0 channel 2 remote-diode low-alert bit. this bit is set to logic 1 when the channel 2 remote-diode temperature falls below the programmed temperature threshold limit in the remote 2 alert low limit register. 0 remote alert low 1 0 channel 1 remote-diode low-alert bit. this bit is set to logic 1 when the channel 1 remote-diode temperature falls below the programmed temperature threshold limit in the remote 1 alert low limit register.
? 1 c 8 ??? max6581 ______________________________________________________________________________________ _ _ 19 11. ?? x = ?? register b7 b6 b5 b4 b3 b2 b1 b0 ideality _ factor hex 0x4b x x x 0 0 0 0 0 .999 0x00 x x x 0 0 0 0 1 1.000 0x01 x x x 0 0 0 1 0 1.001 0x02 x x x 0 0 0 1 1 1.002 0x03 x x x 0 0 1 0 0 1.003 0x04 x x x 0 0 1 0 1 1.004 0x05 x x x 0 0 1 1 0 1.005 0x06 x x x 0 0 1 1 1 1.006 0x07 x x x 0 1 0 0 0 1.007 0x08 x x x 0 1 0 0 1 1.008 0x09 x x x 0 1 0 1 0 1.009 0x0a x x x 0 1 0 1 1 1.010 0x0b x x x 0 1 1 0 0 1.011 0x0c x x x 0 1 1 0 1 1.012 0x0d x x x 0 1 1 1 0 1.013 0x0e x x x 0 1 1 1 1 1.014 0x0f x x x 1 0 0 0 0 1.015 0x10 x x x 1 0 0 0 1 1.016 0x11 x x x 1 0 0 1 0 1.017 0x12 x x x 1 0 0 1 1 1.018 0x13 x x x 1 0 1 0 0 1.019 0x14 x x x 1 0 1 0 1 1.020 0x15 x x x 1 0 1 1 0 1.021 0x16 x x x 1 0 1 1 1 1.022 0x17 x x x 1 1 0 0 0 1.023 0x18 x x x 1 1 0 0 1 1.024 0x19 x x x 1 1 0 1 0 1.025 0x1a x x x 1 1 0 1 1 1.026 0x1b x x x 1 1 1 0 0 1.027 0x1c x x x 1 1 1 0 1 1.028 0x1d x x x 1 1 1 1 0 1.029 0x1e x x x 1 1 1 1 1 1.030 0x1f
? 1 c 8 ??? max6581 20 _ _ _ _____________________________________________________________________________________ ic ???k ?????? max6581 ? 1 C 7 ( ??? [7:0] ? ) ????? ????? ? 1 ?????? 125ms ( ? ) ?????? ( ?? ) ? 0 100 ?? ??? max6581 ?? cpu ???? ? ( ?? ) ??? ???? ?? ?????? ??? 13 ? max6581 ?? ???????? ? ??? a/d ??? ? 10 a ? 0.25v ? ? 100 a ? 0.95v ?? ????? 100 ? ( 50 < < 150) ??? ???? v be ????? ??????? ????????? ?????????? ??? 2 c ?? ?????????? ????? 12. ? (4ah) x = ?? bit name por _ state function 7 (msb) x 0 6 resistance cancellation 7 0 channel 7 resistance cancellation enable bit. set this bit to logic 1 to enable resistance cancellation. set this bit to logic 0 to disable resistance cancellation. 5 resistance cancellation 6 0 channel 6 resistance cancellation enable bit. set this bit to logic 1 to enable resistance cancellation. set this bit to logic 0 to disable resistance cancellation. 4 resistance cancellation 5 0 channel 5 resistance cancellation enable bit. set this bit to logic 1 to enable resistance cancellation. set this bit to logic 0 to disable resistance cancellation. 3 resistance cancellation 4 0 channel 4 resistance cancellation enable bit. set this bit to logic 1 to enable resistance cancellation. set this bit to logic 0 to disable resistance cancellation. 2 resistance cancellation 3 0 channel 3 resistance cancellation enable bit. set this bit to logic 1 to enable resistance cancellation. set this bit to logic 0 to disable resistance cancellation. 1 resistance cancellation 2 0 channel 2 resistance cancellation enable bit. set this bit to logic 1 to enable resistance cancellation. set this bit to logic 0 to disable resistance cancellation. 0 resistance cancellation 1 0 channel 1 resistance cancellation enable bit. set this bit to logic 1 to enable resistance cancellation. set this bit to logic 0 to disable resistance cancellation.
? 1 c 8 ??? max6581 ______________________________________________________________________________________ _ _ 21 ???? ???????? ?? dxp_ dxn_ ?? dxp_ ? dxn_ ????????? ?????? alert ? overt ? ??? ?? ? ??? alert overt ??? ?? max6581 ? pcb ?? ? pcb ??????? ic ????????? ?2????? pcb ??? max6581 ?? pcb ?? ??????? cpu ?? ic ??????????? ???????? ??? ( sot23 sc70 ? ) ??? ????????? ???????? ?????????? ??????? adc ? ? adc ??? ( ? ) ? ???? emi ? dxp_ dxn_ ?? 100pf ?????y ????? ??????? pcb ? pcb ? ?? max6581 ??? 14 13. ???? ( ? 1C7) ? ????? ( ) 14. ?? device _ address a7 a6 a5 a4 a3 a2 a1 a0 1 0 0 1 1 0 1 r/ w supplier model _ no. pnp npn central semiconductor corp. (usa) cmpt3906 2n3906 cmpt3904 2n3904 fairchild semiconductor (usa) mmbt3906 2n3906 2n3904 infineon (germany) smbt3906 on semiconductor (usa) mmbt3906 2n3906 2n3904 rohm semiconductor (usa) sst3906 sst3904 samsung (korea) kst3906-tf kst3904-tf siemens (germany) smbt3906 smbt3904 zetex (england) fmmt3906ct-nd fmmt3904ct-nd
? 1 c 8 ??? max6581 22 _ _ _ _____________________________________________________________________________________ pcb 1??????? 1) max6581 ????? t?? 4 ? 8 ? ?????t?? ???? pci ? 2) ? dxp_ dxn_ ? crt ??? ?????? ?????? +30 c 3) ? dxp_ dxn_ ???? ??????? ?? +12v ? dxp_ ?? 20m ??? +1 c ??? pcb ??????? ? dxp_ dxn_ ?? gnd ( ? 5) 4) ???? / ???? 5) ?? ( ?? 5mil 10mil) ?? ???????? 6) ??? v cc ? ( 47 ) ?? ?? 8 ?????? ?????????? 6 ? 12 ?????? ???????? ??? belden #8451 ? ?? 100 ?????? dxp_ dxn_ ? gnd ?? ????????? ??????? 100pf ???????? ?? 1 ?? +0.5 c ? 5. ? dxp_ dxn_ pcb ? dxn_ dxp_ ? ??? 5C10 mils 5C10 mils 5C10 mils minimum 5C10 mils gnd dxp_ dxn_ gnd
? 1 c 8 ??? max6581 ______________________________________________________________________________________ _ _ 23 ?? ?? process: bicmos ?? ??????? china.maxim-ic.com/ packages ???? + # - ? rohs ????????????? rohs ???? dxp2 alert v cc overt stby dxp7 i.c. 24 23 22 21 20 19 18 17 16 15 14 13 12 dxn2 1 2 dxp1 n.c. gnd +3.3v smbclk smbdata cpu fpga asic 100pf 100pf dxp3 dxn3 dxn1 dxn7 3 4 5 6 100pf 100pf 100pf 100pf 10 11 dxn6 dxp6 8 7 9 dxp5 dxn4 dxn5 4.7ki 4.7ki 4.7ki 4.7ki to p to p to p to p 0.1 f dxp4 n.c. max6581 ? ? ?? 24 tqfn-ep t2444+4 21-0139 90-0022
? 1 c 8 ??? max6581 ?? maxim maxim ???????? maxim ??????????? 24 _ ___________________ _ ________ maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ? 2010 maxim integrated products maxim maxim integrated products, inc. ??? maxim 8328 100083 ? 800 810 0310 010-6211 5199 010-6211 5299 ? ? ? ?? 0 8/10

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