F75393
±1
o
C Temperature Sensor with ß Compensation
Release Date: May, 2008
Revision: V0.16P
F75393
F75393 Datasheet Revision History
Version
V0.10P
V0.11P
V0.12P
V0.13P
V0.14P
V0.15P
Date
2007/7/23
2007/9/20
2007/11/5
2008/1/25
2008/1/29
2008/3/5
Page
-
-
-
-
-
-
Preliminary Version
Add register description
Revision History
Remove DFN Package Information
Modify Electrical characteristic
Modify typo.
Remove F75394 Part Number
Add SMBus Address strapping selection function
Add register index FA (SMBus Address strapping entry key)
V0.16P
2008/5/29
5
Modify typo. of Chapter 6.4 for Temperature Range Table
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.
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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 The warning message ..................................................................................................... 3
6.3 Access Interface .............................................................................................................. 3
6.4 Temperature Monitoring................................................................................................... 5
6.5 Alert# ............................................................................................................................... 5
6.6 THERM#.......................................................................................................................... 6
6.7 ADC Conversion Sequence............................................................................................. 6
6.8 Thermal Mass and Self Heating ...................................................................................... 6
6.9 ADC Noise Filtering ......................................................................................................... 7
6.10 Beta Compensation ......................................................................................................... 7
6.11 Resistor Cancelled Function............................................................................................ 8
6.12 PCB Layout Guide........................................................................................................... 8
7. Register Description ................................................................................................................ 9
7.1 Configuration Register
Index 03h(Read), 09h(Write)................................................ 9
7.2 Status Register
Index 02h ........................................................................................... 9
7.3 Conversion Rate Register
Index 04h(Read), 0Ah(Write) .......................................... 10
7.4 One-Shot Register
Index 0Fh ................................................................................... 10
7.5 Alert Queue & Timeout Register
Index 22h............................................................... 10
7.6 Status-with-ARA Control Register
Index 24h............................................................. 10
7.7 Beta Compensation RegisterIndex 3Bh ..................................................................... 11
7.8 Chip ID (MSB) RegisterIndex 5Ah ............................................................................. 11
7.9 Chip ID (LSB) Register
Index 5Bh ............................................................................ 11
7.10 Fintek Vendor ID (MSB) (Manufacturer ID) Register
Index 5Dh................................ 11
7.11 Fintek Vendor ID (LSB) (Manufacturer ID) Register
Index 5Eh................................. 11
7.12 SMBus Address Entry Key Register
Index FAh......................................................... 12
7.13 Fintek Vendor ID II (Manufacturer ID) RegisterIndex FEh.......................................... 12
7.14 Value RAM
Index 10h- 2Fh ....................................................................................... 12
8.
Electrical characteristic.......................................................................................................... 13
8.1 Absolute Maximum Ratings .............................................................................................. 13
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8.2 DC Characteristics ............................................................................................................ 13
8.3 AC Characteristics
............................................................................................................ 15
9. Ordering Information ............................................................................................................. 15
10. Package Dimensions............................................................................................................. 16
11. Application Circuit.................................................................................................................. 18
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F75393
1.
General Description
The F75393 is a temperature sensor IC with ß compensation and alert signal which is specific designed
for notebook, graphic cards etc. An 11-bit analog-to-digital converter (ADC) was built inside F75393. The
F75393 can monitor two set of temperature which is very 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 thermal transistor or transistor 2N3906. The F75393 also can support new
generational 45nm CPU temperature sensing by varied ß of CPU. 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.
Through the BIOS or application software, the users can read all the monitored parameters of system all
the time. And a pop-up warning can be also activated when the monitored item was out of the
proper/pre-setting range. The application software could be Fintek's application utility, or other management
application software. The F75393 provides SMBus address selection. This chip can be used more than 2 pcs
on the same board by different SMBus address enter. The F75393 is in the green package of 8-pin
MSOP/SOP and powered by 3.3V.
2.
Features
Provide 1 on-chip local and 1 remote temperature sensing
±1
o
C accuarcy on remote channel and
±3
o
C accuarcy on local channel
◇ ±1
C (+60 C to +100 C, remote)
o
o
o
o
o
o
◇
±3
C (+60 C to +100 C, local)
Support new generational CPU temperature sensing with ß compensation
Resistor cancelled function
ALERT# output for SMBus alert
THERM# output for over temperature alert or for system shut down
Programmable THERM# limits and THERM# hysteresis
Programmable alert queue
Programmable limited and setting points(alert threshold) for all monitored items
2 wire SMBus interface and 3VCC operation
8-MSOP Package – F75393M
8-SOP Package – F75393S
The F75393 provides SMBus address ID option by resistor selection and they have the following
SMBus slave address: (Default address is 98h)
Noted: Patented TW 235231 TWI263778
F75393
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May, 2008
V0.16P
