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W83L761G winbond h/w monitoring ic

W83L761G preliminary publication release date: april 18, 2005 - i - revision 1.0 table of contents- 1. general description ......................................................................................................... 1 2. features ....................................................................................................................... .......... 1 3. key specifications ............................................................................................................. .2 4. block diagram .................................................................................................................. .... 2 5. pin configuration .............................................................................................................. .3 6. pin description................................................................................................................ ..... 3 7. functional description.................................................................................................... 4 7.1 general description ........................................................................................................... 4 7.2 access interface ............................................................................................................... .4 7.3 temperature measurement machine ................................................................................ 5 8. control and status register ....................................................................................... 6 8.1 configuration register (write only)................................................................................... 6 8.2 temperature register return format (read at normal mode, read only) ..................... 6 8.3 manufacturer?s / device id register return format ( read at power-down mode, read only) .. 6 9. electrical characteristic ............................................................................................. 7 9.1 absolute maximum ratings ............................................................................................... 7 9.2 dc characteristics............................................................................................................. 7 9.3 ac characteristics ............................................................................................................. 7 10. the top marking................................................................................................................ ... 9 11. package specification .................................................................................................... 10 12. application circuits ........................................................................................................ 11

W83L761G preliminary publication release date: april 18, 2005 - 1 - revision 1.0 1. general description W83L761G is a hardware monitoring ic with high temperature accuracy, low-power consumption, and spi (serial peripheral interface) interface. W83L761G has an on-chip thermal sensor and an 8?bits adc (analog to digital converter) to convert the monitored temperature values. the temperature resolution and accuracy is 0.5 c and 3 c, respectively, and the operation temperature is from -20c to + 120c. W83L761G is available in sot23-5 package. the working voltage ranges from 3v to 5.5v. small package dimension, 2.9mm 2.8mm (including the pin length), low power consumption and simple spi interface make W83L761G easy to use in every application filed. 2. features monitoring items - temperature ? measure the temperature with high accuracy. ? one on-chip thermal sensor. general ? interface: spi control. ? 3v~5.5v v cc operation. package ? 5-pin sot-23-5. ? dimension: 2.9mm 2.8mm.
W83L761G preliminary - 2 - 3. key specifications ? monitoring temperature range and accuracy: -20 c ~ +120 c 3 c(@70 c) ? supply voltage 3v~5.5v ? operating supply current 3v: 2 ma typ. 5v: 2.8 ma typ. ? power down supply current 3v: 300 ua typ. 5v: 900 ua typ. ? adc resolution 8 bits 4. block diagram serial peripheral interface control logic temperature register 8-bit adc gnd vcc W83L761G si/o sc cs#
W83L761G preliminary publication release date: april 18, 2005 - 3 - revision 1.0 5. pin configuration 761g 54 123 vcc sc cs# gnd si/o 6. pin description i/o 12ts ttl level and schmitt trigger wi th 12 ma source -sink capability in ts ttl level input pin and schmitt trigger pin name no pin type description cs# 1 in ts chip select inpu t from controller. gnd 2 - system ground. si/o 3 i/o 12ts slave input/output ? serial bus bidirectional data line ? from and to controller. sc 4 in ts slave clock from controller. v cc 5 power 3.0v ~ 5.5 v power supply. bypass with 0.1 f ceramic capacitors.
W83L761G preliminary - 4 - 7. functional description 7.1 general description W83L761G is a hardware monitoring ic with high temperature accuracy. W83L761G will be accessed by spi (serial peripheral interface) interface. an 8-bit analog-to-digital converter (adc) is built inside W83L761G for monitored temperature converting. shutdown mode is enabled by writing xxff to W83L761G, and will always output 800fh. 7.2 access interface W83L761G acts as a slave device on spi compatible bus. cs# acts as the trigger of the W83L761G. W83L761G would not response to the serial interface bus unless cs# acts low. sc is the serial clock issued by the host. the data is received at the ris ing edge of the sc, and transmitted at the falling edge of the sc. there are three kinds of access types. figure 1 shows the first access type, continuous reading 8-bit frame from 761g. here, ?continuous? means the cs# does not de-asserted while reading out data. at the end of last bit, host must output high on cs# to terminate the cycle. this access type is used to readout W83L761G 8-bit temperature. figure 1 continuous reading 8 bit frame the second access type is continuous reading 16- bit frame from W83L761G, and is illustrated in figure 2. after first byte readout, host will not de-assert cs#, but will continue to send sc until next byte is read out and then de-assert cs#. figure 2 continuous reading 16 bit frame 18 sc #cs so si/o 181 8 sc #cs so driver tri-state si/o sc #cs
W83L761G preliminary publication release date: april 18, 2005 - 5 - revision 1.0 the last access type, used for host to issue shut-down command, is shown in figure 3. after reading 2 bytes temperature from W83L761G, host continues to send clock and 2 more bytes command. during all 4 bytes, the cs# never de-asserts. figure 3 shutdown control 7.3 temperature measurement machine W83L761G temperature data format is 8-bit/10-bit complement. the 8-bit/10-bit temperature data can be obtained by reading the temperature register return format (section 8.2). the format of temperature data is shown in table 1. 8-bit digital output 10-bit digital output temperature 8-bit binary 8-bit hex 10-bit binary 10-bit hex +125 c 0011,1110 3eh 00,1111,1010 0fah +25 c 0000,1100 0ch 00,0011,0010 032h +1 c 0000,0000 00h 00,0000,0010 002h +0.5 c - - 00,0000,0001 001h +0 c 0000,0000 00h 00,0000,0000 000h -0.5 c - - 11,1111,1111 3ffh -1 c 1111,1111 ffh 11,1111,1110 3ffh -25 c 1111,0011 f3h 11,1100,1110 3ceh -55 c 1110,0100 e4h 11,1001,0010 392h table 1 tem p erature readout from 761g host writes in commands sc #cs so si/o #cs sc
W83L761G preliminary - 6 - 8. control and status register 8.1 configuration register (write only) (selects shutdown or continuous conversion mode) d15 d14 d13 d12 d11 d10 d9 d8 x x x x x x x x d7 d6 d5 d4 d3 d2 d1 d0 command d15-d0 set to xx ff hexes enables shutdown mode. d15-d0 set to xx 00 hexes enables continuous conversion mode. note: setting d15-d0 to any other values may place the W83L761G into a manufacturer?s test mode. these test modes are used for winbond production testing only. 8.2 temperature register return format (read at normal mode, read only) d15 d14 d13 d12 d11 d10 d9 d8 msb bit8 bit7 bit6 bit5 bit4 bit3 bit2 d7 d6 d5 d4 d3 d2 d1 d0 bit1 bit0 0 0 0 0 1 1 d15-d6: temperature data. one lsb=0.5 oc. two`s complement format d5-d2: logic 0 will be output on si/o. d1-d0: logic 1 will be output on si/o. 8.3 manufacturer?s / device id register return format (read at power-down mode, read only) d15 d14 d13 d12 d11 d10 d9 d8 1 0 0 0 0 0 0 0 d7 d6 d5 d4 d3 d2 d1 d0 0 0 0 0 1 1 1 1 d15-d2: manufacturer?s / device id data. this register accessed whenever the W83L761G is in shutdown mode. d1-d0: logic 1 will be output on si/o.
W83L761G preliminary publication release date: april 18, 2005 - 7 - revision 1.0 9. electrical characteristic 9.1 absolute maximum ratings parameter rating unit power supply voltage -0.5 to 7.0 v input voltage 3 to 5.5 v operating temperature -20 to + 125 c storage temperature -50 to +150 c note: exposure to conditions beyond those listed under absolute maximum ratings may adversely affect the life and reliability of the device. 9.2 dc characteristics (ta = 0 c to 70 c, vdd = 3.3v 10%, vss = 0v) parameter sym. min. typ. max. unit conditions i/o 12ts ? ttl level bi-directional pin with source-sin k capability of 12 ma a nd schmitt-trigger level input input low threshold voltage vt- 0.5 0.8 1.1 v vdd = 3.3 v input high threshold voltage vt+ 1.6 2.0 2.4 v vdd = 3.3 v hysteresis vth 0.5 1.2 v vdd = 3.3 v output low voltage vol 0.4 v iol = 12 ma output high voltage voh 2.4 v ioh = - 12 ma input high leakage ilih +10 a vin = vdd input low leakage ilil -10 a vin = 0v in ts - ttl level schmitt-triggered input pin input low threshold voltage vt- 0.5 0.8 1.1 v vdd = 3.3 v input high threshold voltage vt+ 1.6 2.0 2.4 v vdd = 3.3 v hysteresis vth 0.5 1.2 v vdd = 3.3 v input high leakage ilih +10 a vin = vdd input low leakage ilil -10 a vin = 0 v 9.3 ac characteristics parameter symbol typ. units sc (clock) period t1 0.16 s cs# to sc (clock) high set-up time t2 100 ns cs# to data out (so) delay t3 70 ns sc (clock) low to data out (so) delay t4 70 ns cs# high to data out (so) tri-state t5 200 ns sc and si/o rise time tr 10 ns sc and si/o fall time tf 10 ns
W83L761G preliminary - 8 - sc #cs t5 so sc #cs t5 so sc (clock) high to data in (si) hold time t6 50 ns data in (si) set-up time to sc (clock) high t7 30 ns sc cs# so t3 t4 t1 t4 tr tf t2 data output timing diagram tri-state data output timing diagram t5 t5 sc t7 #cs t6 so sc t7 #cs t6 so t7 t7 t6 t6
W83L761G preliminary publication release date: april 18, 2005 - 9 - revision 1.0 data input timing diagram 10. the top marking the top marking of W83L761G W83L761G 443ob 2826978y-61 left: winbond logo 1st line: winbond logo and the type number: W83L761G 2nd line: tracking code 2 826978y-61 3rd line: tracking code 443 o b 443 : packages made in '04 , week 43 o : assembly house id; a means ase, s means spil, o means ose b : ic revision
W83L761G preliminary - 10 - 11. package specification sot23-5 l1 l h e d e e1 b y e
W83L761G preliminary publication release date: april 18, 2005 - 11 - revision 1.0 12. application circuits c1 0.1u c1 0.1u r1 10k ? w83761 application circuit 0.2 winbond hardware a 1 1 monday, november 24, title size document rev date: sheet of 168 intel gpi/o rxd txd g nd 68hc11 micro gpi/o1 gpi/o2 miso sc g nd 5v w83761 1 3 4 5 2 /cs si/o sc v+ gnd w83761 1 3 4 5 2 /cs si/o sc v+ gnd 5v
W83L761G preliminary - 12 - revision history version date page description 1.0 april 18, 2005 12 add important notice important notice winbond products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for surgical implantation, atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, or for other applications intended to support or sustain life. further more, winbond products are not intended for applications wherein failure of winbond products could result or lead to a situation wherein personal injury, death or severe property or environmental damage could occur. winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify winbond for any damages resulting from such improper use or sales. headquarters no. 4, creation rd. iii, science-based industrial park, hsinchu, taiwan tel: 886-3-5770066 fax: 886-3-5665577 http://www.winbond.com.tw/ taipei office tel: 886-2-8177-7168 fax: 886-2-8751-3579 winbond electronics corporation america 2727 north first street, san jose, ca 95134, u.s.a. tel: 1-408-9436666 fax: 1-408-5441798 winbond electronics (h.k.) ltd. no. 378 kwun tong rd., kowloon, hong kong fax: 852-27552064 unit 9-15, 22f, millennium city, tel: 852-27513100 please note that all data and specifications are subject to change without notice. all the trade marks of products and companies mentioned in this data sheet belong to their respective owners. winbond electronics (shanghai) ltd. 200336 china fax: 86-21-62365998 27f, 2299 yan an w. rd. shanghai, tel: 86-21-62365999 winbond electronics corporation japan shinyokohama kohoku-ku, yokohama, 222-0033 fax: 81-45-4781800 7f daini-ueno bldg, 3-7-18 tel: 81-45-4781881 9f, no.480, rueiguang rd., neihu district, taipei, 114, taiwan, r.o.c.

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