W83L771AWG W83L771ASG Nuvoton H/W Monitoring IC DATE: NOVEMBER 19TH, 2009 REVISION: 1.91 TABLE OF CONTENTS1. 2. 3. 4. 5. 6. 7. GENERAL DESCRIPTION ......................................................................................................... 1 1.1 Product Selection Guide ................................................................................................. 1 FEATURES ................................................................................................................................. 2 2.1 Monitoring Items - Temperature ..................................................................................... 2 2.2 General Features ............................................................................................................ 2 2.3 Package Type ................................................................................................................. 2 2.4 Applications..................................................................................................................... 2 KEY SPECIFICATIONS .............................................................................................................. 3 BLOCK DIAGRAM ...................................................................................................................... 3 PIN CONFIGURATION ............................................................................................................... 4 PIN DESCRIPTION ..................................................................................................................... 4 FUNCTIONAL DESCRIPTION.................................................................................................... 5 7.1 General Description ........................................................................................................ 5 7.2 Access Interface ............................................................................................................. 6 7.2.1 7.2.2 7.3 ALERT Output Mode ...................................................................................................... 7 7.3.1 ALERT Output Comparator Mode ................................................................................... 7 7.3.2 ALERT Output Interrupt Mode ........................................................................................ 8 7.3.3 ALERT Output SMBusTM ALERT Mode ........................................................................ 9 7.4 T _ CRIT _ A Output and T_CRIT flags .......................................................................... 10 7.5 Measured Temperature Data Format ........................................................................... 11 7.5.1 7.5.2 8. 9. 10. Serial bus write to internal address register followed by the data byte ............................. 6 Serial bus read form internal address register followed by the data byte ......................... 6 Measure Remote Temperature Data Format .................................................................. 11 Measure Local Temperature Data Format...................................................................... 11 7.6 Digital Filter ................................................................................................................... 12 7.7 Fault Detect ................................................................................................................... 13 7.8 Conversion Rate and Moving Average ......................................................................... 13 CONTROL AND STATUS REGISTER ..................................................................................... 14 8.1 W83L771AWG/ASG Registers ..................................................................................... 14 8.2 Data Format of Temperature Registers (LT, RTHB, RTLB, LHS, RHSHB, RHSLB, LLS, RLSHB, RLSLB, RTOHB, RTOLB, RCS, LCS) ........................................................................ 15 8.3 Status Register (SR) ..................................................................................................... 16 8.4 Configuration Register (C) ............................................................................................ 16 8.5 T_CRIT Hysteresis Register (TH) ................................................................................. 17 8.6 Conversion Rate Register (CR) .................................................................................... 17 8.7 Filter and Alert Configure Register (RDTF) .................................................................. 18 8.8 Ideality (IDEA) ............................................................................................................... 18 ELECTRICAL CHARACTERISTIC ........................................................................................... 19 9.1 Absolute Maximum Ratings .......................................................................................... 19 9.2 DC Characteristics ........................................................................................................ 19 9.3 AC Characteristics ........................................................................................................ 20 TOP MARKING SPECIFICATIONS .......................................................................................... 21 10.1 W83L771AWG , W83L771AWG-2 and W83L771ASG-2 TOP MARKING ................... 21 10.2 W83L771ASG TOP MARKING..................................................................................... 21 Publication Release Date: 2009/10/21 Version: 1.9 -I- 11. 12. PACKAGE SPECIFICATIONS .................................................................................................. 22 11.1 TSSOP (MSOP) 8L 3X3 MM2 ...................................................................................... 22 11.2 SOP8 150mil ................................................................................................................. 23 REVISION HISTORY ................................................................................................................ 24 Publication Release Date: 2009/10/21 Version: 1.9 - II - W83L771AWG/W83L771ASG 1. GENERAL DESCRIPTION The W83L771AWG/ASG, a one remote and one local temperature sensor with 2 temperature alert TM outputs and with 2-wire System Management Bus (SMBus ) serial interface, is Nuvoton hardware monitoring IC specifically designed for PC, notebook and any embedded environments. The W83771AWG/ASG uses Ideality Factor Configuration to eliminate temperature measurement error. The remote temperature sensor input can be connected to thermal diode or transistor such as 2N3904. A 10-bit plus sign ADC (Analog to Digital Converter) with 0.125C resolutions is built inside W83L771AWG/ASG to convert the monitored temperature value. Programmable conversion rates and stand-by mode support low-power operation. TM The W83L771AWG/ASG is a high temperature accuracy, low-power consumption, SMBus serial interface IC, which is available in 8-pin, TSSOP (MSOP) and SOP package, with the working voltage of 3.3 V ±10%. 1.1 Product Selection Guide PART NUMBER SMBUS ADDRESS W83L771AWG 1001_100xb W83L771AWG-2 1001_101xb FUNCTIONALITY REMOTE 1 W83L771ASG 1001_100xb W83L771ASG-2 1001_101xb LOCAL 1 OTHER Programmable temperature High/Low limit PACKAGE TSSOP-8 (MSOP-8) SOP-8 Publication Release Date: 2009/11/19 Version: 1.91 -1- W83L771AWG/W83L771ASG 2. FEATURES 2.1 Monitoring Items - Temperature 2.2 General Features ALERT Output supports SMBus TM 2.0 protocol Programmable Temperature High/Low limit and hysteresis for ALERT and T _ CRIT _ A outputs Package Type 2.4 TM Interface: SMBus serial interface 3.3V± 10% VCC operation 10 bit plus sign remote temperature data format, 0.125C resolution Programmable offset register for various thermal diodes TM SMBus 2.0 compatible interface, supports TIMEOUT Programmable conversion rates allow user to optimize the power consumption. Supply 2 alert outputs : ALERT and T _ CRIT _ A 2.3 Measure the temperature with high accuracy. One on-chip thermal sensor One remote temperature sensor input Ideality Factor Configuration on External Diodes. Remote Diode Fault Detection. W83L771AWG in 8-pin TSSOP(MSOP) W83L771ASG in 8-pin SOP Applications Desktop and Notebook Computers, support down to 45nm processes and below. (Please refer to application notice for details) Hardware Management Servers Embedded Applications Publication Release Date: 2009/11/19 Version: 1.91 -2- W83L771AWG/W83L771ASG 3. KEY SPECIFICATIONS Local temperature range and accuracy -40C to +125C (TA) Typ. 2C (20C~40C) Max. 3C (-40C~125C) *1 Remote temperature range and accuracy -40C to +127C (TD) Typ. 1C (25C ~70C) Typ. 2C (-40C ~127C) Max. 3C (-40C~127C) *2 Supply voltage Operating supply current Low Power Operation ADC resolution include sign bit 3.3V ± 10% 900 uA typ. 15μA Standby Current 10 Bits *1 Guaranteed by design from -40~125 degree C, 100% tested at 85 degree C. *2 Guaranteed by design from -40~127 degree C, 100% tested at 85 degree C. 4. BLOCK DIAGRAM xI Control Logic Current Generator Command Coder/DeCoder SMBus SCLK REGISTER BANK D1+ D1- Analog Mux Sensor Circuitry (Local/Remote) Temperature Registers OVER TEMPERATURE COMPARATOR Configuration Registers Status Registers Limit/Critical (Hysteresis) Registers Fault Queue ADC Local Thermal Sensor SDA ALERT T_CRIT_A Publication Release Date: 2009/11/19 Version: 1.91 -3- W83L771AWG/W83L771ASG 5. PIN CONFIGURATION 8 1 VDD 2 D+ 3 D- 7 W83L771AWG W83L771ASG SCL SDA 6 4 5 T_CRIT_A ALERT GND 6. PIN DESCRIPTION PIN TYPE I/OD12ts OD12 PIN ATTRIBUTE TTL level and schmitt trigger open drain output with 12 mA sink capability Open-drain output pin with 12 mA sink capability INts TTL level input pin and schmitt trigger AIN Input pin (Analog) POWER GROUND Positive power supply input Power supply ground PIN NAME NO PIN TYPE DESCRIPTION VDD 1 POWER D+ 2 AIN Connect to Thermal Diode Anode. D- 3 AIN Connect to Thermal Diode Cathode. T _ CRIT _ A 4 OD12 T_CRIT alarm output, for interrupt or shutdown control. GND 5 GROUND ALERT 6 OD12 SDA 7 I/OD12ts Digital I/O (Open drain). SMBus bidirectional serial data. Requires a pull-up resistor. SCL 8 INt s Digital Input (Open drain). SMBus serial clock input. Requires a pull-up resistor. DC power supply, voltage input 3.3V 10%. Power supply ground Alarm output, for interrupt control. Publication Release Date: 2009/11/19 Version: 1.91 -4- W83L771AWG/W83L771ASG 7. FUNCTIONAL DESCRIPTION 7.1 General Description The W83L771AWG/ASG provides one remote temperature sensor input which can be connected to the 2N3904 transistor, or CPU/GPU thermal diode, as well as one local on die thermal sensor to detect the ambient temperature. The W83L771AWG/ASG supplies Ideality Factor Configuration on one External Diode to eliminate the temperature measurement error. Selectable conversion rates and modes allow low power operation. The temperature measured by the W83L771AWG/ASG is digitally compared with the value stored in the programmable High/Low limit Registers and T_CRIT registers. All out-of-limit values can be detected by monitoring Status Register (SR). The W83L771AWG/ASG also supports SMBus TM 2.0 ALERT mode and TIMEOUT. The data format of the remote temperature is represented by a 10-bit plus sign, two‟s complement word and 11-bit unsigned binary word with an LSB equal to 0.125C. The real temperature equals the measured temperature plus or minus offset value. Offset value could be set in offset registers. The date format of the offset registers is also the same as the data format of the remote temperature. Local Temperature data is represented by an 8-bit plus sign, two‟s complement format, with an LSB equal to 1C. Publication Release Date: 2009/11/19 Version: 1.91 -5- W83L771AWG/W83L771ASG 7.2 Access Interface The W83L771AWG/ASG provides SMBus serial interface to read/write internal registers, and the SMBus address for read and write is 10011001b and 10011000b, respectively. The W83L771AWG-2 and W83L771ASG-2 respond to hard-wire SMBus slave address as shown in Table 1.1. The first serial bus access timing is shown as follows: 7.2.1 Serial bus write to internal address register followed by the data byte 0 7 8 0 7 8 SCL 10 SDA 10 Start By Master 0 1 00 1 10 R/W D7 D6 AckAck by by 771AWG 78 5R Frame 1 Serial Bus Address Byte D5 D4 D3 D2 D1 D0 AckAck by by 771AWG 78 5R Frame 2 Internal Index Register Byte 0 7 8 SCL (Continued) SDA (Continued) D7 D6 D5 D4 D3 D2 D1 D0 Ack Ack by byby 771AWG 78 784R 5R Frame 3 Data Byte Stop by Master Figure 1. Serial Bus Write to Internal Address Register followed by the Data By te 7.2.2 Serial bus read form internal address register followed by the data byte 0 SCL SDA 10 Start By Master 7 01 0 1 1 00 01 0 D7 R/W 7 D6 Ack by 771AWG Frame 1 Serial Bus Address Byte 0 8 1 2 3 4 5 6 01 0 1 1 00 01 D5 D4 D3 D2 D1 D0 Ack by 771AWG Frame 2 Internal Index Register Byte 7 8 8 0 1 2 3 4 5 D7 D6 D5 D4 D3 D2 6 7 D1 D0 8 SCL(Continued) SDA(Continued) 1 R/W Ack ack by by 771AWG 785R Frame 3 Serial Bus Byte by Frame 4 Data Byte 784R Ack no Ack by Master Stop by Master Publication Release Date: 2009/11/19 Version: 1.91 -6- W83L771AWG/W83L771ASG 7.3 ALERT Output Mode The W83L771AWG/ASG ALERT pin is an active-low open-drain output pin which is triggered when the measured temperature exceeds the limitation defined in the limit registers. There are three types of ALERT output mode: the ALERT output comparator mode, the ALERT output interrupt mode, and the ALERT output SMBus ALERT mode. 7.3.1 ALERT Output Comparator Mode Fig. 7.3.1 shows the mechanism of the ALERT output comparator mode. Setting Filter and Alert Configure Register, or register address BFh, D0 to 1 could enable the ALERT output comparator mode. In this mode, the ALERT pin will be alerted if the monitored temperature is out-of-limit and the ALERT pin keeps low until the temperature goes back to the target range. This mode is not power on default setting. High Limit Measured Temperature By W83L771AWG/ASG W83L771AWG/ASG ALERT Pin W83L771AWG/ASG High Limit Status Fig. 7.3.1 Response of ALERT output comparator mode Publication Release Date: 2009/11/19 Version: 1.91 -7- W83L771AWG/W83L771ASG 7.3.2 ALERT Output Interrupt Mode Fig. 7.3.2 shows the mechanism of the ALERT output interrupt mode. In this mode, the W83L771AWG/ASG will set the ALERT mask bit D7 of Configuration Register during a read of the Status Register if any flag in Status Register, except the Busy flag D7 and OPEN flag D2, is set. This prevents further ALERT triggering until the master has reset the ALERT mask bit, at the end of the interrupt service routine. The Status Register flags are cleared only upon a read command from the master and will be re-alerted at the end of the next temperature conversion if the measured temperature still falls outside of the allowed range. High Limit Measured Temperature By W83L771AWG/ASG ALERT mask set in response to reading of status register by master W83L771AWG/ASG ALERT Pin End of Temperature conversion W83L771AWG/ASG High Limit Status Fig. 7.3.2 Response of ALERT output interrupt mode Publication Release Date: 2009/11/19 Version: 1.91 -8- W83L771AWG/W83L771ASG 7.3.3 ALERT Output SMBusTM ALERT Mode Fig. 7.3.3 shows the mechanism of the ALERT output SMBus TM ALERT mode. In this mode, the TM ALERT output of the W83L771AWG/ASG is connected to the SMBus alert line which has more than one device connected to it. Through such an implementation, SMBus TM ALERT mode can assist the master in resolving which slave generates an interrupt. When the measured temperature falls outside of the allowed range, the ALERT pin will be pulled low and the corresponding alert flags in Status Register will be pulled high. The ALERT mask bit will just be set if there is a read command for Status Register or when SMBus TM ALERT Response Address (ARA) occurs from master (Alert Response Address is 0001100). Meanwhile, the W83L771AWG/ASG will generate and return its own address to the master. If the temperature never falls outside of the allowed range, the latched ALERT pin can release by the reset ALERT mask bit and the latched corresponding alert flags in Status Register can release by reading command for Status Register. Please also refer to the W83L771AWG_773G_775G Application Note 3.pdf for implementation. High Limit Measured Temperature By W83L771AWG/ASG ALERT mask set in response to Alert Response Address from master W83L771AWG/ASG ALERT Pin End of Temperature conversion W83L771AWG/ASG High Limit Status Fig. 7.3.3 Response of ALERT output SMBus alert mode Publication Release Date: 2009/11/19 Version: 1.91 -9- W83L771AWG/W83L771ASG 7.4 T _ CRIT _ A Output and T_CRIT flags T _ CRIT _ A Output pulls low when the measured temperature exceeds the critical temperature (T_CRIT) defined in 19h, and 20h for Remote, and Local T_CRIT set point, respectively. Once the T _ CRIT _ A Output pulls low, it will not be set high until the measured temperature is lower than (T_CRIT － TH), where TH is Temperature Hysteresis. Status Register will not be reset until it is read and the temperature conversion falls below the T_CRIT set point. The ALERT will also be asserted for T_CRIT event, Figure 7.4 shows this mechanism. Please also refer to the W83L771AWG_773G_775G Application Note 4.x.pdf for implementation. T_CRIT# Set point TH Value T_CRIT - TH Measured temperature by W83L771 W83L771 T_CRIT# pin W83L771 T_CRIT status W83L771 read command for status register W83L771 ALERT# pin W83L771 status register read ALERT Mask will be set Fig. 7.4 Response of T _ CRIT _ A output Publication Release Date: 2009/11/19 Version: 1.91 - 10 - W83L771AWG/W83L771ASG 7.5 Measured Temperature Data Format The W83L771AWG/ASG can measure remote temperature with the resolution of 11-bit two‟s complement format and local temperature with the resolution of 8-bit two‟s complement format. 7.5.1 Measure Remote Temperature Data Format Table 7.5.1 shows the remote temperature data with 11-bit two‟s complement format. Table 7.5.1 Measured Remote Temperature Data Format TEMPERATURE 8-BIT DIGITAL OUTPUT HIGH BYTE 8-BIT DIGITAL OUTPUT LOW BYTE +127.875°C 0111,1111 111X,XXXX +25.750°C 0001,1001 110X,XXXX +2.250°C 0000,0010 010X,XXXX +1.125°C 0000,0001 001X,XXXX +0.000°C 0000,0000 000X,XXXX - 1.125°C 1111,1110 111X,XXXX - 2.250°C 1111,1101 110X,XXXX - 25.750°C 1110,0110 010X,XXXX - 127.875°C 1000,0000 001X,XXXX 7.5.2 Measure Local Temperature Data Format Table 7.5.2 shows the local temperature data with 8-bit two‟s complement format. Table 7.5.2 Measured Local Temperature Data Format TEMPERATURE 8-BIT DIGITAL OUTPUT +127°C 0111,1111 +25°C 0001,1001 +2°C 0000,0010 +1°C 0000,0001 +0°C 0000,0000 - 1°C 1111,1111 - 2°C 1111,1110 - 25°C 1110,0111 - 128°C 1000,0000 Publication Release Date: 2009/11/19 Version: 1.91 - 11 - W83L771AWG/W83L771ASG 7.6 Digital Filter The W83L771AWG/ASG provides three Digital Filter levels to suppress erroneous remote temperature readings due to noise. The register address to set the digital filter is at Filter and Alert Configure Register. If set bits <D2, D1> = <0, 0>, then no filter is selected. If set bits <D2, D1> = <0, 1> or <1, 0>, then filter level 1 is selected. If set bits <D2, D1> = <1, 1>, then level 2 is selected. Figure 7.6.1 shows the step response of reading remote temperature with different filter level, and Figure 7.6.2 shows the impulse response. Temperature (oC) 5 0 4 5 4 0 No Filter Level 3 5 Filter Level 1 Filter Level 2 3 0 2 5 0 5 1 1 2 0 5 0 SAMPLE NUMBER 2 5 Figure 7.6.1 Step Response of reading remote temperature Temperature (oC) 5 0 4 5 4 0 No Filter Level 3 5 Filter Level 1 Filter Level 2 3 0 2 5 0 5 1 1 2 0 5 0 SAMPLE NUMBER 2 5 Figure 7.6.2 Impulse Response of reading remote temperature Publication Release Date: 2009/11/19 Version: 1.91 - 12 - W83L771AWG/W83L771ASG 7.7 Fault Detect Table 7.7 shows the response of Fault Detection if the false connection of D+ and D- occurs after the power-up. Please also refer to the W83L771AWG_773G_775G Application Note 2.pdf for implementation. Table 7.7 response of Fault Detect 7.8 CONNECTION (D+, D-) STATUS REGISTER BIT MEASURED REMOTE TEMPERATURE (VDD, Floating) 1 +127.875 ℃ (GND, Floating) 1 +127.875 ℃ (Floating, Floating) 1 +127.875 ℃ Short 1 +127.875 ℃ Conversion Rate and Moving Average The W83L771AWG/ASG provides an embedded moving average into conversion rate selection. Each conversion rate can set a couple of proper noise rejection and average supply current. Publication Release Date: 2009/11/19 Version: 1.91 - 13 - W83L771AWG/W83L771ASG 8. CONTROL AND STATUS REGISTER 8.1 W83L771AWG/ASG Registers READ ADDRESS (HEX) WRITE ADDRESS (HEX) Local Temperature (LT) 00h Remote Temperature High Byte (RTHB) REGISTER NAME (HEX) POWER ON DEFAULT STATES <D7:D0> BINARY / HEX DECIMAL Read Only 0000,0000b / 00h 0 01h Read Only 0000,0000b / 00h 0 Status Register 1 (SR) 02h Read Only 0000,0000b / 00h 0 Configuration 03h 09h 0000,0001b / 01h 1 Conversion Rate (CR) 04h 0Ah 0000,1000b / 08h 8 Local High Set point (LHS) 05h 0Bh 0100,0110b / 46h 70 Local Low Set point (LLS) 06h 0Ch 1101,1011b / DBh -40 Remote High Set point High Byte (RHSHB) 07h 0Dh 0100,0110b / 46h 70 Remote Low Set point High Byte (RLSHB) 08h 0Eh 1101,1011b / DBh -40 Remote Temperature Low Byte (RTLB) 10h Read Only 0000,0000b / 00h 0 Remote Temperature Offset High Byte (RTOHB) 11h 11h 0000,0000b / 00h 0 Remote Temperature Offset Low Byte (RTOLB) 12h 12h 0000,0000b / 00h 0 Remote High Set point Low Byte (RHSLB) 13h 13h 0000,0000b / 00h 0 Remote Low Set point Low Byte (RLSLB) 14h 14h 0000,0000b / 00h 0 Remote T_CRIT Set point (RCS) 19h 19h 0110,1110b / 6Eh 110 Local T_CRIT Set point (LCS) 20h 20h 0101,0101b / 55h 85 T_CRIT Set point (TH) 21h 21h 0000,1010b / 0Ah 10 Remote Diode Temperature Filter (RDTF) BFh BFh 0000,0000b / 00h 0 Remote Diode ideality (IDEA) E3h E3h 1000,0100b / 84h 132 Read Manufacturer‟s ID (RMID) FEh Read Only 0101,1100b / 5Ch 92 Read Die Revision (RDR) FFh Read Only 0001,0000b / 10h 0001,0001b / 11h 0001,0011b / 13h 16 17 19 (C) Publication Release Date: 2009/11/19 Version: 1.91 - 14 - W83L771AWG/W83L771ASG 8.2 Data Format of Temperature Registers (LT, RTHB, RTLB, LHS, RHSHB, RHSLB, LLS, RLSHB, RLSLB, RTOHB, RTOLB, RCS, LCS) The following table shows the data format, Two‟s Complement, of the temperature, including Local Temperature (LT), Remote Temperature High Byte (RTHB), Local High Set point (LHS), Remote High Set point High Byte (RHSHB), Local Low Set point (LLS), Remote Low Set point High Byte (RLSHB), Remote Temperature Offset High Byte (RTOHB), Remote T_CRIT Set point (RCS), Local T_CRIT Set point (LCS), Remote Temperature Low Byte (RTLB), Remote High Set point Low Byte (RHSLB), Remote Low Set point Low Byte (RLSLB), and Remote Temperature Offset Low Byte (RTOLB). Only remote temperature, remote high set point, remote low set point, and remote temperature offset support two bytes, up to 0.125℃ resolution, for the temperature data format; others support one byte, up to 1℃ resolution, for the temperature data format. REGISTER OF HIGH BYTE: LT, RTHB, LHS, RHSHB, LLS, RLSHB, RTOHB, RCS, LCS DATA FORMAT: TWO’S COMPLEMENT FORMAT BIT D7 D6 D5 D4 D3 D2 D1 D0 VALUE Sign 64 32 16 8 4 2 1 Unit: ℃ REGISTER OF LOW BYTE: RTLB, RHSLB, RLSLB, RTOLB DATA FORMAT: TWO’S COMPLEMENT FORMAT BIT D7 D6 D5 D4 D3 D2 D1 D0 VALUE 0.5 0.25 0.125 0 0 0 0 0 The following table shows some examples. REGISTER OF HIGH BYTE REGISTER OF LOW BYTE (IF ANY) TEMPERATURE D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 +127.875℃ 0 1 1 1 1 1 1 1 1 1 1 X X X X X 0.125℃ 0 0 0 0 0 0 0 0 0 0 1 X X X X X 0℃ 0 0 0 0 0 0 0 0 0 0 0 X X X X X -1.125℃ 1 1 1 1 1 1 1 0 1 1 1 X X X X X -25.75℃ 1 1 1 0 0 1 1 0 0 1 0 X X X X X -127.875℃ 1 0 0 0 0 0 0 0 0 0 1 X X X X X To obtain the two-byte temperature data correctly, it is required to read High Byte data, followed by reading Low Byte data. Publication Release Date: 2009/11/19 Version: 1.91 - 15 - W83L771AWG/W83L771ASG 8.3 Status Register (SR) Read Address: 02h Write Address: Read Only Power On Default States: 00h BIT FLAG NAME DESCRIPTION D7 Busy Setting to „1‟ indicates ADC is busy converting. D6 LHIGH Setting to „1‟ indicates a measured Local Temperature Higher than Local High set point (High Limit). D5 LLOW Setting to „1‟ indicates a measured Local Temperature lower than Local Low set point (Low Limit). D4 RHIGH Setting to „1‟ indicates a measured Remote Temperature higher than Remote High set point (High Limit). D3 RLOW Setting to „1‟ indicates a measured Remote Temperature lower than Remote Low set point (Low Limit). D2 OPEN Setting to „0‟ indicates that D+ and D- pins are connected with a Remote Diode. Setting to „1‟ indicates that D+ and D- pins are disconnected with a Remote Diode, or float, or short. D1 RCRIT Setting to „1‟ indicates a Remote Critical Temperature alarm. D0 LCRIT Setting to „1‟ indicates a Local Critical Temperature alarm. 8.4 Configuration Register (C) Read Address: 03h Write Address: 09h Power On Default States: 01h BIT FLAG NAME DESCRIPTION D7 ALERT mask If this bit is set to „1‟ ALERT interrupts are masked. D6 STOP/ RUN If this bit is set to „1‟, Device into standby mode. D5 0 No definition and this bit can be read as 0. D4 Remote T _ CRIT _ A mask If this bit is set to „1‟ Remote T _ CRIT _ A interrupts are masked. D3 0 No definition and this bit can be read as 0. D2 Local T _ CRIT _ A mask If this bit is set to „1‟ Local T _ CRIT _ A interrupts are masked. D1 0 No definition and this bit can be read as 0. D0 Reserved Reserved Publication Release Date: 2009/11/19 Version: 1.91 - 16 - W83L771AWG/W83L771ASG 8.5 T_CRIT Hysteresis Register (TH) Read Address: 21h Write Address: 21h Power On Default States: 0Ah REGISTER: TH (MAX. VALUE: 31) BIT D7 D6 D5 D4 D3 D2 D1 D0 VALUE 0 0 0 16 8 4 2 1 Unit: ℃ 8.6 Conversion Rate Register (CR) Read Address: 04h Write Address: 0Ah Power On Default States: 08h REGISTER: CR (DEFAULT CONVERSION RATE: 16HZ) (OPENA, OPENB) 0 1 Temp. sensor 1 local + 1remote(A or B) 1 local BIT<D7:D0> Frequency/Time(Sec) Average IVDD 00h 0.0625Hz/16 == 0.0625Hz/16 == 01h 0.125Hz/8 == 0.125Hz/8 == 02h 0.25Hz/4 == 0.25Hz/4 == 03h 0.5Hz/2 211uA 0.5Hz/2 211uA 04h 1Hz/1 232uA 1Hz/1 232uA 05h 2Hz/0.5 331uA 2Hz/0.5 331uA 06h 4Hz/0.25 393uA 4Hz/0.25 393uA 07h 8Hz/0.125 589uA 8Hz/0.125 589uA 08h 16Hz/0.0625 833uA 16Hz/0.0625 833uA 09h-FFh Reserved Frequency/Time(Sec) Average IVDD Reserved Publication Release Date: 2009/11/19 Version: 1.91 - 17 - W83L771AWG/W83L771ASG 8.7 Filter and Alert Configure Register (RDTF) Read Address: BFh Write Address: BFh Power On Default States: 00h BIT DESCRIPTION <D7:D3> 0 No definition and this bit can be read as 0. <D2:D1> RDTFA Filter Level <D2, D1>=<0, 0>: No Filter Selected <D2, D1>=<0, 1> or <1, 0>: Filter Level 1 Selected <D2, D1>=<1, 1>: Filter Level 2 Selected ALERT Configure If this bit is set to „1‟ ALERT Output Comparator mode is enabled. D0 8.8 COMMAND Ideality (IDEA) The Ideality Factor is dependant upon the process that was used in the fabrication of the particular diode. Read Address: E3h Write Address: E3h Power On Default States: 84h REGISTER: IDEA (DEFAULT IDEALITY: 1.003) BIT<D7:D0> RANGE 86h 0.9851~0.9924 85h 0.9925~1.0000 84h 1.0001~1.0076 83h 1.0077~1.0153 82h 1.0154~1.0232 81h 1.0233~1.0312 80h 1.0313~1.0393 7Fh 1.0394~1.0476 7Eh 1.0477~1.0560 7Dh 1.0561~1.0645 7Ch 1.0646~1.0731 7Bh 1.0732~1.0819 00h-7Ah, 87h-FFh Reserved Publication Release Date: 2009/11/19 Version: 1.91 - 18 - W83L771AWG/W83L771ASG 9. ELECTRICAL CHARACTERISTIC 9.1 Absolute Maximum Ratings PARAMETER RATING UNIT Power Supply Voltage 3.3V 10% V Input Voltage -0.3 to +3.6 V Operating Temperature* -40 to +125 C Storage Temperature -50 to +150 C *Guaranteed by design, 100% test at 85 degreeC. 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 85 C, VDD = 3.3V 10%, VSS = 0V) PARAMETER SYM. MIN. TYP. MAX. UNIT CONDITIONS I/O12ts - TTL level bi-directional pin with source-sink capability of 12 mA and schmitt-trigger level input Input Low Threshold Voltage Vt- 0.5 0.8 Input High Threshold Voltage Vt+ 1.6 2.0 Hysteresis VTH 0.5 1.2 Output Low Voltage VOL Output High Voltage VOH Input High Leakage ILIH Input Low Leakage ILIL 1.1 V VDD = 3.3 V V VDD = 3.3 V V VDD = 3.3 V V IOL = 12 mA V IOH = - 12 mA +10 A VIN = VDD -10 A VIN = 0V 0.4 V IOL = 12 mA 2.4 0.4 2.4 OD12 - Open-drain output pin with sink capability of 12 mA Output Low Voltage INts - VOL 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 Publication Release Date: 2009/11/19 Version: 1.91 - 19 - W83L771AWG/W83L771ASG 9.3 AC Characteristics t t SCL t R R SCL t t SU;DAT t HD;SDA SU;STO VALID DATA SDA IN t HD;DAT SDA OUT Serial Bus Timing Diagram Timing for W83L771AWG/ASG : PARAMETER SYMBOL SCL clock period t SCL 2.5 uS Start condition hold time tHD;SDA 1.5 uS Stop condition setup-up time tSU;STO 1 uS DATA to SCL setup time tSU;DAT 120 nS DATA to SCL hold time tHD;DAT 5 nS SCL and SDA rise time tR 1.0 uS SCL and SDA fall time tF 300 nS - MIN. MAX. UNIT Publication Release Date: 2009/11/19 Version: 1.91 - 20 - W83L771AWG/W83L771ASG 10. TOP MARKING SPECIFICATIONS 10.1 W83L771AWG , W83L771AWG-2 and W83L771ASG-2 TOP MARKING 771AW G-2 G 715D 771AW G GBA 715B FIRST+SECOND LINE 771AS G-2 G 715D IC part number: 771AWG (W83L771AWG), 771AWG-2 (W83L771AWG-2), 771ASG-2 (W83L771ASG-2) Tracking Code 1 SECOND LINE G Assembly house code BA Mask version (eliminated from the top marking of W83L771AWG-2 and W83L771ASG-2) Tracking Code 2 THIRD LINE 7 The package is made in 2007 15 Week: 15 B IC version 10.2 W83L771ASG TOP MARKING W83L7 71ASG 715GB FIRST+SECOND LINE IC part number: W83L771ASG Tracking Code 2 THIRD LINE 7 The package is made in 2007 15 Week: 15 G Assembly house code B IC version Publication Release Date: 2009/11/19 Version: 1.91 - 21 - W83L771AWG/W83L771ASG 11. PACKAGE SPECIFICATIONS 11.1 TSSOP (MSOP) 8L 3X3 MM2 Publication Release Date: 2009/11/19 Version: 1.91 - 22 - W83L771AWG/W83L771ASG 11.2 SOP8 150mil 8 5 E 4 1 Control demensions are in milmeters . E Publication Release Date: 2009/11/19 Version: 1.91 - 23 - W83L771AWG/W83L771ASG 12. REVISION HISTORY VERSION 1.0 DATE 01/28/2008 PAGE DESCRIPTION 20 The versions before 1.0 are preliminary version Remove section 8.9 Configuration on Beta Compensation Technology. 1. Modify Chapter 4 Block Diagram. 2. Add the descriptions of “POWER” and “GROUND” to Chapter 6 Pin Descriptions. 3. Correct the description and update “ALERT protocol” to “ALERT mode” in section 7.1 General Description. 4. Update the descriptions in 7.3.2 ALERT Output Interrupt Mode. 5. Update Figure 7.3.1, Figure 7.3.2, Figure 7.3.3, Figure 7.4, and Figure 7.6.1. 6. Update “RDTF1” to “RDTF”, remove “Remote Diode Ideality Low Byte”, and correct the default of “Remote Diode Ideality” in section 8.1 W83L771AWG/ASG Registers. 7. Update the information in section 9.1 Absolute Maximum Ratings. 8. Modify the description of bit D2 of 8.3 Status Register. 1.1 03/04/2008 3, 5, 6, 8, 9, 10, 15, 17, 20 1.2 03/25/2008 17-19 1.3 01/15/2009 1,15,19,22 1.4 02/03/2009 3 1. Modified the remote temperature accuracy range. 1.5 03/06/2009 3 1. Added maximum accuracy range definition. 1.6 04/15/2009 3,19 1.7 06/18/2009 2 1.8 10/7/2009 9,10,13 1.9 10/21/2009 20 1.91 11/19/2009 21 1. Add the power-on default states, read address, and write address of registers 1. Modified the typo of Ideality CR[E3h] default value. 2. Added W83L771AWG-2/ASG-2 info. 1. Modified the operation temperature range definition. Added processor type support description. 1. 2. Added APN reference description. Added application notice for T_CRIT#. 1. Modified the AC characteristic to support 400KHz serial bus. 1. Correct the top marking Publication Release Date: 2009/11/19 Version: 1.91 - 24 - W83L771AWG/W83L771ASG Important Notice Nuvoton Products are neither intended nor warranted for usage in systems or equipment, any malfunction or failure of which may cause loss of human life, bodily injury or severe property damage. Such applications are deemed, “Insecure Usage”. Insecure usage includes, but is not limited to: equipment for surgical implementation, atomic energy control instruments, airplane or spaceship instruments, the control or operation of dynamic, brake or safety systems designed for vehicular use, traffic signal instruments, all types of safety devices, and other applications intended to support or sustain life. All Insecure Usage shall be made at customer’s risk, and in the event that third parties lay claims to Nuvoton as a result of customer’s Insecure Usage, customer shall indemnify the damages and liabilities thus incurred by Nuvoton. Publication Release Date: 2009/11/19 Version: 1.91 - 25 -