F75363 Datasheet ±1oC Accuracy Temperature Sensor IC with Fan Speed Control Release Date: July, 2007 Revision: V0.27P F75363 F75363 Datasheet Revision History Version Date 0.20P Jan.,2005 0.21P Feb.,2005 Page Revision History Original version (Confidential) 16 1. Update ARA register/Index FDh 2. Update Vendor ID(Manufacture ID) Register/Index FEh 3. Add version ID Register/Index FFh 0.22P May.,2005 11 1. Update Alert Mask Register default value 15 2. Update version ID Register/Index FFh 16 3. Update T1 HIGH LIMIT default value 0.23P 0.24P Updated typo and patent July, 2006 12 1. Alert mask register1, Index 16h correction 2. Alert mask register2, Index 17h correction 13 3. PWM control and fan monitor register, Index 4Ah correction 0.25P Dec, 2006 1 Add Taiwan patent certification number 0.26P Jan, 2007 14 Register-0x4C description correction 0.27P July,2007 - Company readdress 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. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Fintek for any damages resulting from such improper use or sales. F75363 -I- July, 2007 V0.27P F75363 Table of Contents 1. 2. 3. 4. 5. 6. General Description ............................................................................................................ 1 Features.............................................................................................................................. 1 Key Specifications............................................................................................................... 2 Pin Configuration ................................................................................................................ 2 Pin Descriptions.................................................................................................................. 2 Functional Description ........................................................................................................ 3 6.1 General Description ........................................................................................................ 3 6.2 Access Interface ............................................................................................................. 3 6.3 Typical Operating Characteristics ................................................................................ 4 6.4 Temperature Monitoring............................................................................................... 6 6.4 Alert# Signal ................................................................................................................... 7 6.5 Temperature Fault Queue ............................................................................................. 9 7. Registers Description.......................................................................................................... 9 7.1 Configuration Register Index 03h (09h) ...................................................................... 9 7.2 Status Register Index 02h......................................................................................... 10 7.3 Status Register Index 18h......................................................................................... 10 7.4 Real-Time Status Register Index 2Eh ....................................................................... 11 7.5 Conversion Rate Register Index 04h (0Ah) .............................................................. 11 7.6 Serial Interface Timeout Register Index 22h ............................................................. 11 7.7 ALERT MASK Register 1 Index 16h ......................................................................... 11 7.8 ALERT MASK Register 2 Index 17h ......................................................................... 12 7.9 PWM Control Register Index 30h ............................................................................. 12 7.10 FINTEK PWM Control Register Index 31h (Fintek Mode)....................................... 13 7.11 PWM Control and Fan Monitor Register Index 4Ah ................................................. 13 7.12 7.13 7.14 7.15 7.16 7.17 7.18 7.19 Fan Spin-Up Configuration Register Index 4Bh ...................................................... 14 PWM Value Register Index 4Ch ............................................................................. 14 FAN PWM Frequency Register Index 4Dh.............................................................. 14 Lookup Table Hysteresis Register Index 4Fh.......................................................... 15 Temperature vs. PWM Duty Lookup Table Registers Index 50h to 5Fh .................. 15 ALERT Mode and Temperature Filter Control Register -- Index BFh .......................... 15 ARA Register --- Index FDh ........................................................................................ 15 Vendor ID II (Manufacturer ID) Register Index FEh ................................................ 15 7.20 Version ID Register Index FFh................................................................................ 15 F75363 -II- July, 2007 V0.27P F75363 7.21 Temperature and Fan Count Value Registers Index 10h- 2Fh ................................. 15 8. PCB Layout Guide ............................................................................................................ 16 9. Electrical characteristic ..................................................................................................... 17 9.1 Absolute Maximum Ratings............................................................................................. 17 9.2 DC Characteristics .......................................................................................................... 18 9.3 AC Characteristics........................................................................................................... 19 10. Ordering Information ......................................................................................................... 19 11. Package Dimensions ........................................................................................................ 20 10 Application Circuit .................................................................................................................... 1 F75363 -III- July, 2007 V0.27P F75363 1. General Description The F75363 is a temperature sensor IC with PWM duty cycle output which is specific designed for graphic cards etc. An 11-bit analog-to-digital converter (ADC) was built inside F75363. The F75363 can monitor temperature and fan speed which is important for the system to work stably and properly. This chip provides 1 remote temperature sensor and 1 local temperature sensor. The remote temperature sensor can be performed by CPU/GPU thermal diode or transistor 2N3906. The users can set up the upper and lower limits (alarm thresholds) of all monitored parameters and this chip can also issue warning messages for system protection when there is something wrong with monitored items. As for fan speed control, the F75363 can use PWM duty cycle output to automatically control fan speed. The fan speed control is related to temperature variation. There is 8-step lookup table for users to program PWM duty cycle output to control fan speed according to the temperature variation. The F75363 is in the package of 8-pin SOP and powered by 3.3V. 2. Features Provide 1 on-chip local and 1 remote temperature sensing Accuarcy 9 o o o ±1 C accuarcy on remote channel (+60 C to +126 C) 9 o o o ±3 C accuarcy on local channel(+0 C to +100 C) User selectable multi-function pin for either PWM duty cycle output or THERM# signal output function User selectable multi-function pin for either ALERT# output or tachometer input function Automatic fan speed control with user programmable 8-step lookup table Programmable alert queue and limited and setting points(alert threshold) for monitored items 2 wire SMBus interface and ALERT# output for SMBus alert 3VCC operation and in 8-SOP package Patented: TWI235231, TWI263788 F75363 -1- July, 2007 V0.27P F75363 3. Key Specifications 4. 5. Supply Voltage 3.0~3.6V Supply Current 630 uA (typ) (@ conversion rate = 16Hz) Measured Range 0 ~ 126.75 oC Remote Diode Temperature Accuracy ±1 oC from +60oC to +126oC Local Temperature Accuracy ±3 oC from +0oC to +100oC Pin Configuration VCC 1 8 SCL D+ 2 7 SDA D- 3 6 ALERT#/FANIN PWMOUT/THERM# 4 5 GND Pin Descriptions POD12 - Pure Open-drain output pin with 12 mA sink capability INts - TTL level input pin and schmitt trigger AIN - Input pin(Analog) PWR - Power Pin No Pin Name Type Description 1 VCC PWR Power Pin 2 D+ AIN Positive connection to remote temperature sensor (ex: thermal diode anode) 3 D- AIN Negative connection to remote temperature sensor(ex: thermal diode cathode) 4 PWMOUT / THERM# POD12 This is a multi-function pin. Power-on default is PWMOUT (5V-tolerance) function. When it acts as PWMOUT function, it controls the fan speed. When it acts as THERM# function, it will be asserted when the temperature exceeds its thermal limit. F75363 -2- July, 2007 V0.27P F75363 5 GND PWR Ground 6 ALERT# / FANIN POD12 / INts This is a multi-function pin. Power-on default is ALERT# (5V-tolerance) function. When it is used as ALERT# function, it will be asserted when the temperature exceeds its high limit or goes below its low limit. When it is as FANIN function, it is for monitoring the fan speed. 7 SDA INts/POD12 Serial bus data (5V-tolerance) 8 SCL INt s ( 5 V - t o l e r a n c e ) Serial bus clock 6. Functional Description 6.1 General Description The F75363 is a temperature sensor IC with PWM duty cycle output which is specific designed for graphic cards etc. An 11-bit analog-to-digital converter (ADC) was built inside F75363. This chip provides 1 remote temperature sensor and 1 local temperature sensor. The remote temperature sensor can be performed by CPU/GPU thermal diode or transistor 2N3906. Users can set up the upper and lower limits (alarm thresholds) of monitored parameters and this chip can also issue warning messages for system protection when there is something wrong with monitored items. As for fan speed control, the F75363 can use PWM duty cycle output to automatically control fan speed. The fan speed control is related to temperature variation. There is 8-step lookup table for users to program PWM duty cycle output to control fan speed according to the temperature variation. 6.2 Access Interface The F75363 can be connected to a compatible 2-wire serial system management bus as a slave device under the control of the master device, using two device terminals SCL and SDA. The F75363 supports SMBus protocol of, “Write Byte”, “Read Byte”, both with or without Packet Error checking (PEC) which is calculated using CRC-8. For detail information about PEC, please check SMBus 1.1 specification. F75363 supports 25ms timeout for no activity on the SMBus. This timeout function is programmed at 22h bit7 and default is disabled. F75363 also supports Alert Response Address (ARA) protocol. The operation of the protocol is described with details in the following sections. (a) SMBus write to internal address register followed by the data byte F75363 -3- July, 2007 V0.27P F75363 0 7 8 0 7 8 SCL SDA 1 0 0 Start By Master 1 1 0 0 R/W D7 D6 Ack by 363 Frame 1 Serial Bus Address Byte D5 D4 D3 D2 D1 D0 Ack by 363 Frame 2 Internal Index Register Byte 0 7 8 SCL (Continued) SDA (Continued) D7 D6 D5 D4 D3 D2 D1 D0 Stop by Master Frame 3 Data Byte Figure 1. Serial Bus Write to Internal Address Register followed by the Data Byte (b) Serial bus write to internal address register only 0 7 8 0 7 8 SCL SDA 1 0 Start By Master 0 1 1 0 0 R/W D7 D6 Ack by 363 Frame 1 Serial Bus Address Byte D5 D4 D3 D2 D1 D0 Ack by 363 Frame 2 Internal Index Register Byte Stop by Master 0 Figure 2. Serial Bus Write to Internal Address Register Only (c) Serial bus read from a register with the internal address register prefer to desired location 0 7 8 0 7 8 SCL 1 SDA 0 Start By Master 0 1 1 0 0 R/W D7 D6 Ack by 363 Frame 1 Serial Bus Address Byte D5 D4 D3 D2 D1 D0 Ack by Master Frame 2 Internal Index Register Byte Stop by Master 0 Figure 3. Serial Bus Read from Internal Address Register (d) Alert Response Address 0 7 8 0 7 8 SCL 0 SDA Start By Master 0 0 1 1 0 0 R/W 0 Ack by 363 Frame 1 Alert Response Address 1 0 0 1 Frame 2 Device Address 1 0 0 Ack by Master Stop by Master 0 Figure 4. Alert Response Address 6.3 Typical Operating Characteristics (a) Temperature Error vs.D+/D- Capacitance F75363 -4- July, 2007 V0.27P F75363 temperature error(℃) vs. D+/D- capacitance 0 Temperature error(℃ -2 -4 -6 -8 -10 -12 -14 -16 -18 0 10 20 30 40 50 60 70 80 Capacitance(nf) 90 100 110 120 130 (b) Local Temperature Error vs. Die Temperature Local Temperature error(℃) Temperature error(℃) 3.5 3 2.5 2 1.5 1 0.5 0 -0.5 0 10 20 30 40 50 60 70 80 90 100 110 120 Temperature(℃) (c) Remote Temperature Error vs. Die Temperature Remote Temperature error(℃) 3 Temperature error(℃) 2.5 2 1.5 1 0.5 0 -0.5 -1 0 10 20 30 40 50 60 70 80 90 100 110 120 130 Temperature(℃) F75363 -5- July, 2007 V0.27P F75363 (d) Operating Supply Current vs. Conversion Rate Operating current (uA) FAN output Duty = 100% FAN output Duty = 50% Operating current (uA) 900 800 700 600 500 400 300 200 100 0 0.063 0.125 0.25 0.5 1 2 4 8 16 32 Conversion rate(Hz) 6.4 Temperature Monitoring The F75363 monitors a local and a remote temperature sensor. Both can be measured from 0°C to 126.875°C. The temperature format is as the following table: Temperature ( High Byte ) Digital Output Temperature ( Low Byte ) Digital Output 0°C 0000 0000 0°C 000 0 0000 1°C 0000 0001 0.125°C 001 0 0000 25°C 0001 1001 0.250°C 010 0 0000 50°C 0011 0010 0.375°C 011 0 0000 75°C 0100 1011 0.500°C 100 0 0000 90°C 0101 1010 0.625°C 101 0 0000 100°C 0110 0100 0.750°C 110 0 0000 126°C 0111 1110 0.875°C 111 0 0000 T Remote-sensor transistor manufacturers F75363 Manufacturer Model Number Panasonic 2SB0709 2N3906 Philips PMBT3906 -6- July, 2007 V0.27P F75363 6.4 Alert# Signal ALERT#/FANIN (pin 6) can be used as ALERT# output or fan tachometer input by setting Configuration Register (index 03h). When pin 6 is used as ALERT# output, there are three different alert functions can be used. The interrupt methods that ALERT# pin can act are (1) Comparator mode (2) Interrupt mode (3) Alert Response Address mode. 6.4.1 Comparator mode When the Comparator Mode bit in Configuration Register (index BFh) is asserted, ALERT# is used as a temperature comparator. If the triggering conditions occur, ALERT# will go to low and relative alert status will be asserted until those conditions are no longer present. This mode is not the power-on default state. Note that the triggering conditions do not include BUSY and OPEN status in Configuration Register (index 02h). Remote Temperature High Limit Monitoring Remote Temperature F75363 ALERT# pin Remote High Alert Status TIME 6.4.2 Interrupt mode The F75363’s ALERT# output can be used as a simple interrupt signal if Comparator Mode bit is not asserted. If the triggering conditions occur, relative alert status will be asserted and ALERT# will go to low. The F75363 will set the ALERT Mask bit and relative alert status will be cleared after master’s reading of the Status Register (Index 02h or 18h). The ALERT Mask bit is set in order to prevent further ALERT# triggering after the end of one temperature conversion if the triggering conditions are still present. At the end of interrupt service routine, the master has to reset ALERT Mask bit in configuration register. Note that the triggering conditions do not include BUSY and OPEN status in Configuration Register (index 02h). F75363 -7- July, 2007 V0.27P F75363 Remote Temperature High Limit Monitoring Remote Temperature F75363 ALERT# pin Remote High Alert Status ALERT Mask End of temperature conversion ALERT Mask is set and Alert Status is clear after reading status register TIME 6.4.3 Alert Response Address mode If ALERT# is connected to one or more ALERT# outputs of SMBus compatible devices, the master may send an ARA command to ask that which device is pulling ALERT# to low. When the ALERT# is pulled to low by F75363 and F75363 receives the ARA command sent by the master, F75363 will send its address to the master. The F75363 will reset its ALERT# output and set the ALERT Mask bit once the master acknowledges its response of device address. The master may read F75363’s status registers to check what the triggering conditions occur. At the end of interrupt service routine, the master has to reset ALERT Mask bit in configuration register. Note that the triggering conditions do not include BUSY and OPEN status in Configuration Register (index 02h). The ARA, 000 1100, is a general call address and is defined in SMBus specifications. No devices should be assigned to this address. Remote Temperature High Limit Monitoring Remote Temperature F75363 ALERT# pin Remote High Alert Status Alert Status is cleared after reading status register ALERT Mask ALERT Mask is set after alerting device address is transmitted correctly TIME F75363 -8- July, 2007 V0.27P F75363 6.5 Temperature Fault Queue The F75363 provides a Fault Queue bit in Configuration Register (index 03h) to prevent false alert triggering. By setting Fault Queue bit to a 1, the F75363 will require three consecutive triggering conditions of temperature readings to set relative alert status bits to 1. The power-on default value of Fault Queue bit is 0. Monitoring Remote Temperature Remote Temperature High Limit Remote High Alert Status (comparator mode) n n+1 n+2 n+3 n+4 n+5 n+6 n+7 n+8 n+9 n+10 n+11 Sample Number 7. Registers Description 7.1 Configuration Register Index 03h (09h) Power on default <7:0> = 00h Bit Name Attribute 7 ALERT_MASK R/W Set to 1, mask ALERT# signal output. 6 RUN_STOP R/W Set to 0, monitor. 5 PWM_DIS_STBY R/W Set to 1, PWMOUT will be disabled while in standby. (when bit 6 is set to 1) F75363 Description Set to 1, stop monitor (in standby). -9- July, 2007 V0.27P F75363 Set to 0, the F75363’s PWM output continues to output the control signal while in standby. (when bit 6 is set to 1) 4~3 Reserved RO 2 ALERT_TACH_SEL R/W These bits are unused and always set to 0 Set to 1, pin6 is fan Tachometer input. Set to 0, pin6 is ALERT output. 1 Reserved RO 0 ALERT_QUEUE R/W This bit is unused and always set to 0 Set to 1, an ALERT will be generated if consecutive abnormal events occur three times. Set to 0, an ALERT will be generated if any abnormal event occurs. 7.2 Status Register Index 02h Power on default <7:0> = 00h T1 = On-chip temperature sensor (Local) Bit Name Attribute 7 ADC_BUSY RO 6 T1_HIGH_STS RO T2 = Pin 2 external temperature sensor (Remote) Description Set to 1, ADC is converting. Set to 1, T1 temperature exceeds high limit. Set to 0, T1 temperature does not exceed high limit. Set to 1, T1 temperature goes below low limit. 5 T1_LOW_STS RO Set to 0, T1 temperature does not goes below low limit. Set to 1, T2 temperature exceeds high limit. 4 T2_HIGH_STS RO Set to 0, T2 temperature does not exceed high limit. Set to 1, T2 temperature goes below low limit. 3 T2_LOW_STS RO Set to 0, T2 temperature does not goes below low limit. Set to 1, T2 is open-circuit or shorted to VDD. 2 T2_OPEN_STS RO Set to 0, T2 is not open-circuit and not shorted to VDD. Set to 1, T2 temperature exceeds its thermal limit. 1 T2_THERM_STS RO Set to 0, T2 temperature does not exceed its thermal limit. Set to 1, FAN count is higher than the FAN limit value 0 FAN_ALARM RO Set to 0, FAN count is equal or lower than the FAN limit value. 7.3 Status Register Index 18h Power on default <7:0> = 00h T1 = On-chip temperature sensor (Local) F75363 T2 = Pin 2 external temperature sensor (Remote) -10- July, 2007 V0.27P F75363 Bit Name Attribute T1_THERM_STS RO Description Set to 1, T1 temperature exceeds its thermal limit. 7 Set to 0, T1 temperature does not exceed its thermal limit. 6-0 Reserved RO These bits are unused and always set to 0 7.4 Real-Time Status Register Index 2Eh Power on default <7:0> = 00h T1 = On-chip temperature sensor (Local) Bit Name T2 = Pin 2 external temperature sensor (Remote) Attribute Description 7-3 Reserved RO These bits are unused and always set to 0 2 Reserved RO Fintek test mode used only 1 T2_THERM RO 0 T1_THERM RO Set to 1, T2 temperature exceeds its thermal limit This is a real-time event status Set to 1, T1 temperature exceeds its thermal limit This is a real-time event status 7.5 Conversion Rate Register Index 04h (0Ah) Power on default <7:0> = 08h Bit Name Attribute Description Set conversion times per second. 7-0 CONV_RATE Value Conversion/Sec Value Conversion/Sec 00h 0.0625 06h 4 01h 0.125 07h 8 02h 0.25 08h 16 03h 0.5 09h 32 04h 1 0Ah ~ FFh Reserved 05h 2 R/W 7.6 Serial Interface Timeout Register Index 22h Power on default <7:0> = 00h Bit Name Attribute Description 7 EN_I2CTMOUT R/W Set to 1, enable serial interface timeout function. (25ms). Set to 0, disable. 6-0 Reserved RO These bits are unused and always set to 0 7.7 ALERT MASK Register 1 Index 16h Power on default <7:0> = A4h T1 = On-chip temperature sensor (Local) F75363 T2 = Pin 2 external temperature sensor (Remote) -11- July, 2007 V0.27P F75363 Bit Name Attribute 7 Reserved RO 6 T1H_MASK R/W Description This bit is unused and always set to 1 Set to 1, T1 temperature exceeds high limit will not generate an ALERT. Set to 0, T1 temperature exceeds high limit will generate an ALERT. Set to 1, T1 temperature goes below low limit will not generate an ALERT. 5 T1L_MASK R/W Set to 0, T1 temperature goes below low limit will generate an ALERT. Set to 1, T2 temperature exceeds high limit will not generate an ALERT. 4 T2H_MASK R/W Set to 0, T2 temperature exceeds high limit will generate an ALERT. Set to 1, T2 temperature goes below low limit will not generate an ALERT. 3 T2L_MASK R/W Set to 0, T2 temperature goes below low limit will generate an ALERT. 2 Reserved RO 1 T2_THR_MASK R/W This bit is unused and always set to 1 Set to 1, T2 temperature exceeds its thermal limit will not generate an ALERT. Set to 0, T2 temperature exceeds its thermal limit will generate an ALERT. Set to 1, FAN count exceeds its limit will not generate an ALERT. 0 FAN_MASK R/W Set to 0, FAN count exceeds its limit will generate an ALERT. 7.8 ALERT MASK Register 2 Index 17h Power on default <7:0> = 00h T1 = On-chip temperature sensor (Local) Bit Name 7 T1_THR_MASK T2 = Pin 2 external temperature sensor (Remote) Attribute Description Set to 1, T1 temperature exceeds its thermal limit will not generate an ALERT. R/W Set to 0, T1 temperature exceeds its thermal limit will generate an ALERT. 6-0 Reserved RO Fintek test mode used only 7.9 PWM Control Register Index 30h Power on default <7:0> = 23h Bit Name Attribute Description 7 FTK_MODE R/W Select method of controlling PWM duty and frequency to FINTEK mode. 6 Reserved RO This bit is unused and always set to 0 When bit7 set to 0, tachometer input filter can be selected here. 2’b00: Filter time = 177.6us 5-4 FLT_SEL R/W 2’b01: Filter time = 355.2us 2’b10: Filter time = 888us 2’b11: Filter time = 1.776ms 3 Reserved RO 2 Reserved R/W F75363 This bit is unused and always set to 0 Fintek test mode used only -12- July, 2007 V0.27P F75363 Set to 1, select function of Pin4 to PWM output. (default) 1 PT_SEL R/W Set to 0, select function of Pin4 to THERM# output. 0 Reserved R/W Fintek test mode used only 7.10 FINTEK PWM Control Register Index 31h (Fintek Mode) Power on default <7:0> = 00h Bit Name Attribute Description Set to 0, PWM source clock is 2 MHz. 7 FTK_PWMCLK_SEL R/W Set to 1, PWM source clock is 200 kHz. Set to 0 or 1 makes no different. PWM clock is divided by this value. 6-0 FTK_PREDIV R/W PWM clock = PWMOUT source clock/FTK_PREDIV 7.11 PWM Control and Fan Monitor Register Index 4Ah Power on default <7:0> = 20h Bit 7-6 Name Reserved Attribute RO Description These bits are not used and always set to 0 0: operates in TEMPERATURE mode. PWMOUT duty-cycle is automatically adjusted according to the T-P (Temperature vs. PWM) lookup table. Look-up table is locked. 5 PWM_MODE R/W 1: operates in MANUAL mode. Software set the PWMOUT duty-cycle directly. Look-up table is programmable. 0: PWM output will be 0 V to turn off FAN and open (High-Z) to turn on fan. 4 PWM_INV R/W 1: PWM output will be open to turn off FAN and 0 V to turn on fan. 0: PWMOUT frequency source is 333 kHz. 3 PWM_CLK_SEL R/W 1: PWMOUT frequency source is 1.4 kHz. 2 Reserved R/W This bit is not used and always set to 0 00: Traditional Tachometer Input Mode 01: Improved Traditional Tachometer Input Mode 1-0 Tachometer Mode R/W 10: Most Accurate Mode 11: Least Effort Mode Note: If the PWM Clock is 333 kHz, Traditional Tachometer Input Mode is always used. F75363 -13- July, 2007 V0.27P F75363 7.12 Fan Spin-Up Configuration Register Index 4Bh Power on default<7:0> = 3Fh Bit 7-6 Name Reserved Attribute These bits are not used and always set to 0. RO 0: The spin-up time and duty depends on bit 4-0. Fast Tachometer 5 Description 1: Sets the PWMOUT to 100% until the spin-up times out or the minimum RPM limit is R/W reached. When this bit is set, the spin-up duty cycle is always 100%. Spin-up If PWM spin up time (bit2-0) = 000, the spin-up process is bypassed. 00: No spin-up (unless bit5 is set to 0) PWM Spin-Up Duty 4-3 01: 50% R/W 10: 75%~81%. Depends on PWM frequency select. Cycle 11: 100%.(default) The time unit is 0.5 second. The default time is 3.5 seconds 000: No Spin-up. 001: 0.5 seconds 010: 1.0second 2-0 PWM Spin-Up Time R/W 011: 1.5 second 100: 2.0 second 101: 2.5 second 110: 3.0 second 111: 3.5 second 7.13 PWM Value Register Index 4Ch Power on default<7:0> =00h Bit Name Attribute Description If PWM_MODE is set to 0, this register is read only and reflects the current PWM 7-0 PWM_DUTY R/W duty-cycle value from the T-P lookup table. If PWM_MODE is set to 1, this register is read/write and the software programs this register directly. 7.14 FAN PWM Frequency Register Index 4Dh Power on default<7:0> =17h Bit Name Attribute 7-5 Reserved RO 4-0 PWM_FREQ R/W F75363 Description These bits are unused and always set to 0 PWM frequency = PWM_CLK / 2n (PWM_CLK = 333 kHz or 1.4 kHz , n = value of this register) -14- July, 2007 V0.27P F75363 7.15 Lookup Table Hysteresis Register Index 4Fh Power on default<7:0> = 04h Bit Name Attribute Description 7-5 Reserved RO These bits are unused and always set to 0 4-0 LOOKUP HYST R/W Lookup table hysteresis. (1LSB = 1°C) 7.16 Temperature vs. PWM Duty Lookup Table Registers Index 50h to 5Fh Power on default<7:0> = 7Fh and 3Fh Index Name Description Bits 7 50(52,54,56,58, This bit is unused and always set to 0 TEMP(x) 5A,5C,5E) 6-0 51(53,55,57,59, When T2 (external) temperature exceeds (greater than) this value, PWM output will be the value of INDEX 5(y)h register. 7-6 These bits are unused and always set to 0 5-0 PWM output value corresponds to the temperature entry in INDEX 5(x)h. DUTY(y) 5B,5D,5F) 7.17 ALERT Mode and Temperature Filter Control Register -- Index BFh Power on default<7:0> = 00h Bit Name Attribute Description 7-3 Reserved RO These bits are unused and always set to 0 2-1 Reserved R/W Rewriteable register 0: ALERT# is INTERRUPT mode Comparator 0 R/W Mode 1: ALERT# is COMPARATOR mode 7.18 ARA Register --- Index FDh Power on default: 0Ch (ARA address = 18h) 7.19 Vendor ID II (Manufacturer ID) Register Index FEh Power on default: 23h. 7.20 Version ID Register Index FFh Power on default: 20h. 7.21 Temperature and Fan Count Value Registers Index 10h- 2Fh T1 = On-chip temperature sensor (Local) F75363 T2 = Pin 2 external temperature sensor (Remote) -15- July, 2007 V0.27P F75363 The value in quota is its power-on default value. Description Attribute Address(High Byte) Address (Low Byte) T1 reading RO 00h 1Ah T2 reading RO 01h 10h T1 High Limit R/W 05h/0Bh (46h) 1Bh (00h) T1 Low Limit R/W 06h/0Ch (00h) 1Ch (00h) T2 High Limit R/W 07h/0Dh (55h) 13h (00h) T2 Low Limit R/W 08h/0Eh (00h) 14h (00h) T1 thermal limit R/W 20h (55h) T1 thermal Hysteresis R/W 23h (0Ah) T2 thermal limit R/W 19h (64h) T2 thermal Hysteresis R/W 21h (0Ah) FAN Tachometer Count RO 47h (FFh) 46h (FFh) FAN Tachometer Limit R/W 49h (FFh) 48h (FFh) 8. PCB Layout Guide PCB can be electrically noisy environments, and the F75363 is measuring very small voltage from the remote sensor, so care must be taken to minimize noise which is occurred at the sensor inputs. The following guideline should be taken to reduce the measurement error of the temperature sensors: 1. Place the F75363 as close as practical to the remote sensing diode. In noisy environments, such as a computer main-board, the distance can be 4 to 8 inches. (typ). This length can be increased if the worst noise sources are avoided. Noise sources generally include switching power plane, clock generators, CRTs, memory buses and PCI/ISA bus etc. 2. Route the D+ and D- tracks close together, in parallel, with grounded guard tracks on each side. Provide a ground plane under the tracks if possible. Do not route D+ & D- lines next to the deflection coil of the CRT. And also don’t route the trace across fast digital signals which can easily induce bigger error. F75363 -16- July, 2007 V0.27P F75363 GND 10MILS DXP 10MILS DXN 10MILS MINIMUM 10MILS GND 3. Use wide tracks to minimize inductance and reduce noise pickup. 10 mil track minimum width and spacing is recommended. 4. Try to minimize the number of copper/solder joints, which can cause thermocouple effects. Where copper/solder joints are used, make sure that they are in both the D+ and D- path and at the same temperature. Thermocouple effects should not be a major problem as 1℃ corresponds to about 200µV. It means that a copper-solder thermocouple exhibits 3µV/℃, and takes about 200µV of the voltage error at D+ & D- to cause a 1℃ measurement error. Adding a few thermocouples causes a negligible error. 5. Place a 0.1µF bypass capacitor close to the VDD pin. In very noisy environments, place an external 2200pF input filter capacitors across D+, D- close to the F75363. 6. If the distance to the remote sensor is more than 8 inches, the use of twisted pair cable is recommended. It will work up to around 6 to 12 feet. 7. Because the measurement technique uses switched current sources, excessive cable and/or filter capacitance will affect the measurement accuracy. When using long cables, the filter capacitor may be reduced or removed. Cable resistance can also induce errors. 1 Ω series resistance introduces about 0.5℃ error. 9. Electrical characteristic 9.1 Absolute Maximum Ratings PARAMETER Power Supply Voltage F75363 RATING UNIT -0.5 to 5.5 V -17- July, 2007 V0.27P F75363 Input Voltage -0.5 to VDD+0.5 V Operating Temperature 0 to +140 °C Storage Temperature -55 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 Temperature Error, Remote Diode Conditions MIN 60 oC < TD < 126 oC, VCC = 3.0V to 3.6V o 0 C <TD < 60 C Temperature Error, Local Diode o 0 C < TA < 100 C, VCC = 3.0V to 3.6V Supply Voltage range Average operating supply current 3.0 ±3 ±1 ±3 3.3 3.6 o C o C V 630 uA 0.0625 Conversions / Sec Rate 430 uA 30 uA Resolution o 0.125 VDD input, Disables ADC , Rising Edge 2.55 Power on reset threshold Diode source current ±1 Unit 16 Conversions / Sec Rate Standby supply current Under-voltage lockout threshold MAX ±1 o o TYP 2.2 C V 2.4 V High Level 95 uA Low Level 10 uA (TA = 0° C to 70° C, VDD = 3.3V ± 10%, VSS = 0V) PARAMETER SYM. MIN. TYP. MAX. UNIT CONDITIONS 12 mA VOL = 0.4V 0.8 V VDD = 3.3V 2.4 V VDD = 3.3V POD12 –Pure open-drain output pin with sink capability of 12 mA Output Low Current INts IOL 10 - TTL level Schmitt-triggered input pin Input Low Threshold Voltage Vt- Input High Threshold Voltage Vt+ Input High Leakage ILIH 1 µA VIN = VDD Input Low Leakage ILIL 1 µA VIN = 0 V F75363 0.4 2.0 -18- July, 2007 V0.27P F75363 9.3 AC Characteristics t SCL t t R R SCL t HD;SDA t t SU;DAT SU;STO SDA IN VALID DATA t HD;DAT SDA OUT Serial Bus Timing Diagram Serial Bus Timing PARAMETER SYMBOL MIN. MAX. UNIT t-SCL 0.5 10000 uS Start condition hold time tHD;SDA 0.5 uS Stop condition setup-up time tSU;STO 0.5 uS DATA to SCL setup time tSU;DAT 50 nS DATA to SCL hold time tHD;DAT 50 nS SCL and SDA rise time tR 0.4 uS SCL and SDA fall time tF 0.4 nS SCL clock period 10. Ordering Information F75363 Part Number Package Type Production Flow F75363SG 8 pin SOP (Green Package) Commercial, 0°C to +70°C -19- July, 2007 V0.27P F75363 11. Package Dimensions 8 5 c E HE L 4 1 0.25 D O A Y e SEATING PLANE GAUGE PLANE A1 b Control demensions are in milmeters . SYMBOL A A1 b c E D e HE Y L θ DIMENSION IN MM MIN. MAX. 1.35 1.75 0.10 0.25 0.33 0.51 0.19 0.25 3.80 4.00 4.80 5.00 1.27 BSC 6.20 5.80 0.10 0.40 1.27 0 10 DIMENSION IN INCH MIN. MAX. 0.053 0.069 0.010 0.004 0.020 0.013 0.010 0.008 0.157 0.150 0.188 0.196 0.050 BSC 0.228 0.016 0 0.244 0.004 0.050 10 (F75363 8-SOP Package ) Feature Integration Technology Inc. Headquarters P Taipei Office 3F-7, No 36, Tai Yuan St., Bldg. K4, 7F, No.700, Chung Cheng Rd., Chupei City, Hsinchu, Taiwan 302, R.O.C. Chungho City, Taipei, Taiwan 235, R.O.C. TEL : 886-3-5600168 TEL : 866-2-8227-8027 FAX : 886-3-5600166 FAX : 866-2-8227-8037 www: http://www.fintek.com.tw l Please note that all datasheet and specifications are subject to change without notice. All the trade marks of products and companies mentioned in this datasheet belong to their respective owner. F75363 -20- July, 2007 V0.27P 10 Application Circuit VCC3V Example 1: TEMPERATURE MONITOR (CPU THERMAL DIODE) THERDA VCC3V D+ C1 3300pF If use THERM# and ALERT# PWM/THERM# ALERT#/TACH D- C2 0.1u R4 4.7K R5 4.7K R2 R3 4.7K 4.7K THERDC U1 D+ DPWM/THERM# Example 2: 1 2 3 4 VCC SCLK D+ SDAT DALERT#/TACH PWM/THERM# GND 8 7 6 5 SCLK SDATA ALERT#/TACH F75363 TEMPERATURE MONITOR (2N3906) D+ VCC3V Q1 2N3906 C3 3300pF DR25 10K PWM/THERM#R23 330 +12V R18 4.7K R19 4.7K Q2 PNP D1 Q3 NMOS +12V C8 JP1 + 47U R20 4.7K 3 2 1 CON3 D2 ALERT#/TACH R24 10K C10 0.1U FAN Circuit for High PWM Frequency R30 3 2 1 27K ALERT#/TACH R28 10K CON3 PWM/THERM# 27K R21 4.7K JP2 VCC3V R22 C11 0.1U R27 470 R26 10 Q4 NPN Title FAN Circuit for Low PWM Frequency Size A Date: -1- Feature Integration Technology Inc. Document Number F75363 Application Circuit Wednesday , January 26, 2005 Rev 0.1 Sheet 1 of 1 July, 2007 V0.27P