FINTEK F75393S ±1oc temperature sensor with ã compensation Datasheet

F75393
±1oC Temperature Sensor with ß Compensation
Release Date: May, 2008
Revision: V0.16P
F75393
F75393 Datasheet Revision History
Version
Date
Page
Revision History
V0.10P
2007/7/23
-
Preliminary Version
V0.11P
2007/9/20
-
Add register description
V0.12P
2007/11/5
-
Remove DFN Package Information
V0.13P
2008/1/25
-
Modify Electrical characteristic
V0.14P
2008/1/29
-
Modify typo.
V0.15P
2008/3/5
-
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
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
1.
2.
3.
4.
5.
6.
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 RegisterIndex 3Bh ..................................................................... 11
7.8 Chip ID (MSB) RegisterIndex 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) RegisterIndex 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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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 oC accuarcy on remote channel and ±3 oC accuarcy on local channel
o
o
o
◇ ±1 C (+60 C to +100 C, remote)
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
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Resistor
3.
4.
5.
A6
A5
A4
A3
A2
A1
A0
1k
1
0
0
1
1
1
1
4.7k
1
0
0
1
1
0
1
10k
1
0
0
1
1
1
0
20k
0
1
1
0
1
1
0
30k
0
1
1
0
1
0
1
47k
0
1
1
0
1
0
0
Key Specifications
‹
Supply Voltage
3.0~3.6V
‹
Supply Current
180 uA (typ)
Pin Configuration
VCC
1
D+
2
D-
3
THERM#
4
F75383
F75393
F75384
8
SCL
7
SDA
6
ALERT#
5
GND
Pin Descriptions
I/O12t
- TTL level bi-directional pin with 12 mA source-sink capability
I/O12ts
- TTL level and schmitt trigger
O12
- Output pin with 12 mA source-sink capability
O24V4
- Output pin with 24 mA source-sink capability, output 4V
AOUT
- Output pin(Analog)
OD12
- Open-drain output pin with 12 mA sink capability
INt
- TTL level input pin
INts
- TTL level input pin and schmitt trigger
AIN
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PIN NO
PIN NAME
TYPE
PWR
DESCRIPTION
PWR
3VCC
Power Pin
1
VCC
2
D+
AIN
3VCC
Positive connection to remote temperature sensor (ex: thermal diode anode)
3
D-
AIN
3VCC
Negative connection to remote temperature sensor(ex: thermal diode
cathode)
4
THERM#
OD12
3VCC
Active LOW output. This pin will be logic low when the temperature exceeds
its limit.
5
GND
PWR
3VCC
Ground
6
ALERT#
OD12
3VCC
Active LOW output. Used as SMBus alert or Interrupt
7
SDA
INts/OD12
3VCC
Serial bus data
8
SCL
INt s
3VCC
Serial bus clock
6. Functional Description
6.1 General Description
The F75393 is a simple temperature sensor with warning signal output. It includes a local and a remote temperature sensor. Both
measured temperature are compared with its high, low and THERM limits which are stored in the registers. When one or more
out-of-limit events occur, the flags in Status Register will be set and that may cause ALERT output to low. Also, measured
temperature exceeding THERM limit may cause THERM output to low.
6.2 The warning message
Pin4 and pin6 act as warning message when the temperature exceeds it threshold point.
6.3 Access Interface
The F75393 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 F75393 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. F75393 supports 25ms timeout for no activity on the SMBus. This timeout function is programmed at 22h
bit7 and default is disabled. F75393 also supports Alert Response Address (ARA) protocol.
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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
0
7
8
0
7
8
SCL
SDA
1
0
0
Start By
Master
1
1
0
0
R/W
D7
D6
Ack
by
395
Frame 1
Serial Bus Address Byte
D5
D4
D3
D2
D1
D0
Ack
by
395
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
395
Frame 1
Serial Bus Address Byte
D5
D4
D3
D2
D1
D0
Ack
by
395
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
395
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
R/W
0
SDA
Start By
Master
0
0
1
1
0
0
0
Ack
by
395
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
The F75393 provides SMBus address option function. Pull high register (Alert Pin) to select SMBus address by power on strapping
and entry key writing. These two conditions must be done both for address selection. If you only option pull high register without
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entry key writing, the address will keep default value 98h. For example, use 30k resistor for address 6A selection. User need to
write entry key to register CRFAh.
Ex: Original chip default address is 98h
Bus Access Byte Write (98, FA, 19)
Bus Access Byte Write (98, FA, 34)
Bus Access Byte Write (98, FA, 01)
After Entry Key writing, Chip address will change to 6Ah.
6.4 Temperature Monitoring
The F75393 monitors a local and a remote temperature sensor. Both can be measured from -40°C to 127.875°C.
The temperature format is as the following table:
Temperature ( High Byte )
Digital Output
Temperature ( Low Byte )
Digital Output
-40°C
1101 1000
-0.875°C
001 0 0000
-20°C
1110 1100
-0.325°C
110 0 0000
-1°C
1111 1111
-0.125°C
111 0 0000
0°C
0000 0000
0°C
000 0 0000
50°C
0011 0010
0.375°C
011 0 0000
75°C
0100 1011
0.500°C
100 0 0000
100°C
0110 0100
0.750°C
110 0 0000
127°C
0111 1111
0.875°C
111 0 0000
Remote-sensor transistor manufacturers
Manufacturer
Model Number
Panasonic
2SB0709 2N3906
Philips
PMBT3906
6.5 Alert#
Five events can trigger ALERT# to low:
(1). VT1(Local) temperature exceeds High Limit
(2). VT1(Local) temperature goes below Low Limit
(3). VT2(Remote) temperature exceeds High Limit
(4). VT2(Remote) temperature goes below Low Limit
(5). VT2(Remote) temperature is Open-circuit.
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These five events are wired-NOR together. This means that when one of out-of-limit event occurs, the ALERT# output goes low if the
MASK control is disabled. ALERT# signal can be used as an IRQ-like interrupt or as an SMBALERT. When ALERT# acts as an
IRQ-like interrupt, the ALERT# will be de-asserted until the following 2 conditions are matched:
(1). The abnormal condition is gone
(2). Reading the Status register to clear the status
When ALERT# acts as a SMBALERT, the ALERT# will be de-asserted until the following 3 conditions are matched:
(1). The abnormal condition is gone
(2). Reading the Status register to clear the status
(3). The ALERT# has been serviced by the SMBus master reading the device address.
For more information about SMBALERT, please see SMBus 1.1 specification.
6.6 THERM#
Either VT1(Local) or VT2(Remote) temperature exceeds the corresponding THERM limit, the THERM# output will assert low. The
asserted output will be de-asserted until the temperature goes below (THERM Limit – Hysteresis). The hysteresis default value is
10°C and it can be programmed. Both VT1 and VT2 have their own THERM limits and Hysteresis values.
6.7 ADC Conversion Sequence
If a START command is written, both channels are converted and the results of both measurements are available after the end of
conversion. A BUSY status bit in the status byte shows that the device is actually performing a new conversion; however, even if the
ADC is busy, the results of the previous conversion are always available.
6.8 Thermal Mass and Self Heating
Thermal mass effect can seriously degrade the F75393’s effective accuracy. The thermal time constant of the SOP package is about
140 in still air. For the F75393’s junction temperature to settle to within +1°C after a sudden +100°C change requires about five time
constants or 12 minutes. The use of smaller packages for remote sensors such as SOT23, improves the situation. Take care to
account for thermal gradients between the heat source and the sensor package do not interfere with measurement accuracy.
Sel-heating does not significantly affect measurement accuracy. Remote sensor self-heating due to the diode current source is
negligible. For the local diode, the worst case error occurs when auto-converting at the fastest rate and simultaneously sinking
maximum current at the ALERT# output. For instance, at an 64Hz rate and ALERT# sink around 0.7mA when pull up resistor 4.7K
ohm to 3.3VCC, the typical power dissipation is VCC x 220 uA plus 0.4V x 0.7mA. Package θJA is about 120 °C/W, so with VCC =
3.3V and no copper PC board heat-sinking, the resulting temperature rise is:
dT =
1.01mW x 120 °C/W = 0.12 °C
Even with these contrived circumstances, it is difficult to introduce significant self-heating errors.
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6.9 ADC Noise Filtering
The ADC is integrating type with inherently good noise rejection. Micro-power operation places constraints on high-frequency noise
rejection; therefore, careful PCB board layout and suitable external filtering are required for high-accuracy remote measurement in
electronically noisy environment. High frequency EMI is best filtered at D+ and D- with an external 2200pF capacitor. Too high
capacitance may introduce errors due to the rise time of the switched current source. Nearly all noise sources tested cause the ADC
measurement to be higher than the actual temperature, depending on the frequency and amplitude.
6.10 Beta Compensation
The F75393 is configured to detect the temperature of diodes (e.g. 2N3906) or CPU thermal diodes. The diode can be connected in
different way as below Figure.
D+
D+
D-
D-
Substrate PNP transistor
i.e. CPU
Discrete PNP transistor
i.e. 2N3906
The basic of the temperature sensor follows mathematical formula as below:
∆VBE
 1 + β1 

 Ic
β1  1
KT
Ie1 KT

=
× ln
=
× ln
q
Ie2
q
 1 + β2 

 Ic 2
 β2 
The F75393 measures temperature from the thermal diodes by the basic. In traditional case, the F75393 outputs dual currents to a
thermal diode. Then the F75393 calculates the absolute temperature by △VBE. For discrete transistor (i.e. 2N3906), the beta is
normally very high such that the percent change in beta is very small. For example, 15% variation in beta for two forced IE currents
and the beta is 50 would contribute about 0.32℃ error per 100℃. For Substrate PNP transistor (i.e. CPU), the beta is very small
such that the proportional beta variation will very high, and it will cause large error in temperature measurement. For example, 15%
variation in beta for two forced IE currents and the beta is 0.5 would contribute about 11.12℃ error per 100℃.
In Order to solve the second issue, the F75393 provides a beta compensation solution for accurate temperature sensing. There is a
register (CR30h bit7) for external thermal diode selection by Beta variation. If this bit is enabled, the beta compensation will
automate to measure the temperature from substrate transistor (i.e. CPU). The F75393 can support the beta range from 0.05~1.8 for
beta compensation. In this new method, the F75393 will provide two IE currents, and feedback two IB currents. The F75393 will
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auto-adjust IE (IE1 and IE2) current and feedback IB (IB1 and IB2) promptly for getting proper IC proportion (IC1/ IC2), then calculates the
accurate temperature. This algorithm of beta compensation is suitable for substrate transistor or new generational CPU (i.e. 45nm
CPU) because small beta and high proportional beta variation. The default value of register CR3Bh bit7 is enabled for measure
substrate transistor. If user would like to detect discrete transistor and the beta is big enough, please disable this bit for detecting.
About this section application, please refer the register description for detail.
6.11 Resistor Cancelled Function
The F75393 can cancel resistor effect from CPU internal circuit or PCB circuit.
6.12 PCB Layout Guide
PCB can be electrically noisy environments, and the F75393 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 F75393 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 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.
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 VCC pin. In very noisy environments, place an external 2200pF input filter
capacitors across D+, D- close to the F75393.
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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.
7. Register Description
7.1
Configuration Register  Index 03h(Read),
Bit
Name
7
ALERT_MASK
R/W
0
Set to 1, mask ALERT# signal output.
6
RUN_STOP
R/W
0
Set to 0, monitor. Set to 1, stop monitor (power down mode).
5-1
Reserved
RO
0
Reserved, always return 0.
0
PWR_DON
R/W
0
Power down this device.
7.2
Status Register  Index 02h
Bit
Name
R/W Default
09h(Write)
Description
R/W Default
Description
7
ADC_BUSY
RO
0
Set to 1, ADC is converting.
6
VT1HIGH
RO
0
Set to 1, VT1 temperature exceeds high limit.
Set to 0, VT1 temperature does not exceed high limit.
5
VT1LOW
RO
0
Set to 1, VT1 temperature goes below low limit.
Set to 0, VT1 temperature does not goes below low limit.
4
VT2HIGH
RO
0
Set to 1, VT2 temperature exceeds high limit.
Set to 0, VT2 temperature does not exceed high limit.
3
VT2LOW
RO
0
Set to 1, VT2 temperature goes below low limit.
Set to 0, VT2 temperature does not goes below low limit.
2
OPEN
RO
0
Set to 1, VT2 is open-circuit.
1
VT2THERM
RO
0
Set to 1, VT2 temperature exceeds its THERM limit.
0
VT1THERM
RO
0
Set to 1, VT1 temperature exceeds its THERM limit.
VT1 (Local); VT2 (Remote)
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7.3
Conversion Rate Register  Index 04h(Read), 0Ah(Write)
Bit
Name
7-0
CONV_RATE
7.4
Bit
7-0
R/W Default
R/W
08h
Description
Set conversion times per second.
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
64
05h
2
0Bh ~ FFh Reserved
One-Shot Register  Index 0Fh
Name
ONE-SHOT
R/W Default
WO
xxh
Description
When chip is at standby mode, writing any value to this register
will initiate a single conversion and comparison cycle. After the
single cycle, chip will returns to standby mode.
7.5
Bit
Alert Queue & Timeout Register  Index 22h
Name
R/W Default
7
EN_I2CTMOUT
R/W
0
6-4
Reserved
RO
0
3-1
ALERT_QUEUE
R/W
0
0
Reserved
RO
1
7.6
Bit
7-1
F75393
Description
Set to 1, enable serial interface timeout function. (Timeout time =
25ms)
Set to 0, disable.
This number determines how many abnormal measurements
must occur before ALERT signal is generated.
000 : Once
001 : Twice
011 : 3 times
111 : 4 times
Always read 1.
Status-with-ARA Control Register  Index 24h
Name
Reserved
R/W Default
RO
0
Description
Reserved
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0
EN_ARA_STS
R/W
1
Set to 1, ALERT de-asserted condition is related with ARA.
Set to 0, ALERT de-asserted condition is not related with
ARA(Alert Response Address).
7.7
Beta Compensation RegisterIndex 3Bh
Bit
7
Name
BETA_EN
R/W Default
R/W
1
Description
1: Enable beta compensation function.
0: Disable beta compensation function.
6
BIAS_SEL
R/W
0
0: DN pad BIAS voltage 150mV
1: DN pad BIAS voltage 220mV
5-4
Reserved
R/W
0h
Dummy registers.
3
R_CANCELLED
R/W
1
1: Enable resister cancelled function.
0: Disable register cancelled function.
2-0
Reserved
7.8
Name
F_CHIP_ID
Bit
Name
F_CHIP_ID
7.10
Bit
7-0
7-0
F75393
R/W Default
RO
07h
Description
Fintek Chip ID 1
R/W Default
RO
07h
Description
Fintek Chip ID 2
Fintek Vendor ID (MSB) (Manufacturer ID) Register  Index 5Dh
Name
F_VENDOR_ID
7.11
Bit
Dummy registers.
Chip ID (LSB) Register  Index 5Bh
7.9
7-0
2h
Chip ID (MSB) RegisterIndex 5Ah
Bit
7-0
R/W
R/W Default
RO
19h
Description
Fintek Vendor ID 1
Fintek Vendor ID (LSB) (Manufacturer ID) Register  Index 5Eh
Name
F_VENDOR_ID
R/W Default
RO
34h
Description
Fintek Vendor ID 2
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F75393
7.12
SMBus Address Entry Key Register  Index FAh
Bit
7
Name
SOFT_RST
6-0 SMBus
7.13
Name
VENDOR_ID
7.14
RO
0h
RO
3Fh
Description
Always return 0
Write 19hÆ 34h Æ 01h Entry key for address selection.
Fintek Vendor ID II (Manufacturer ID) RegisterIndex FEh
Bit
7-0
R/W Default
R/W Default
R/W
23h
Description
Vendor ID
Value RAM  Index 10h- 2Fh
VT1 : Local Temperature
VT2 : Remote Temperature
The value in quota is its power-on default value.
Read
Read
Write
Address
Address
Address
(High Byte)
(Low Byte)
Write Address
Description
Attribute
(Low Byte)
(High Byte)
VT1 reading
RO
00h
1Ah
VT2 reading
RO
01h
10h
VT1 High Limit
R/W
05h (55h)
1Bh (00h)
0Bh
1Bh
VT1 Low Limit
R/W
06h (00h)
1Ch (00h)
0Ch
1Ch
VT2 High Limit
R/W
07h (55h)
13h (00h)
0Dh
13h
VT2 Low Limit
R/W
08h (00h)
14h (00h)
0Eh
14h
VT1 THERM limit
R/W
20h (55h)
20h
VT1 THERM Hysteresis
R/W
21h (0Ah)
21h
VT2 THERM limit
R/W
19h (55h)
19h
VT2 THERM Hysteresis
R/W
23h (0Ah)
23h
VT1 Offset
R/W
1Dh (00h)
1Eh (00h)
1Dh
1Eh
VT2 Offset
R/W
11h (00h)
12h (00h)
11h
12h
F75393
-12-
May, 2008
V0.16P
F75393
8. Electrical characteristic
8.1 Absolute Maximum Ratings
PARAMETER
RATING
UNIT
-0.5 to 5.5
V
-0.5 to VDD+0.5
V
0 to 70
°C
-55 to 150
°C
Power Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and
reliability of the device
8.2 DC Characteristics
(TA = 0° C to 70° C, VDD = 3.3V ± 10%, VSS = 0V )
Parameter
Temperature Error, Remote Diode
Conditions
MIN
60 oC < TD < 100 oC, VCC = 3.0V to 3.6V
o
o
o
Temperature Error, Local Diode
o
o
0 C < TA < 100 C, VCC = 3.0V to 3.6V
Supply Voltage range
Average operating supply current
3.0
±1
±3
3.3
3.6
C
o
C
V
uA
0.0625 Conversions / Sec Rate
180
uA
5
uA
o
0.125
VDD input, Disables ADC , Rising Edge
Power on reset threshold
F75393
±3
o
280
Resolution
Diode source current
±1
Unit
16 Conversions / Sec Rate
Standby supply current
Under-voltage lockout threshold
MAX
±1
-40 C <TD < 60 C, 100 C <TD < 127 C
o
TYP
2.55
2.2
C
V
2.4
V
High Level
95
uA
Low Level
10
uA
-13-
May, 2008
V0.16P
F75393
(TA = 0° C to 70° C, VDD = 3.3V ± 10%, VSS = 0V)
PARAMETER
SYM.
MIN.
TYP.
MAX.
UNIT
CONDITIONS
I/O12t - TTL level bi-directional pin with source-sink capability of 12 mA
Input Low Voltage
VIL
0.8
Input High Voltage
VIH
2.0
Output Low Current
IOL
10
Output High Current
IOH
Input High Leakage
Input Low Leakage
V
V
12
mA
VOL = 0.4V
-10
mA
VOH = 2.4V
ILIH
+1
µA
VIN = VDD
ILIL
-1
µA
VIN = 0V
-12
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
1.1
V
VDD = 3.3 V
Input High Threshold Voltage
Vt+
1.6
2.0
2.4
V
VDD = 3.3 V
Output Low Current
IOL
10
12
mA
VOL = 0.4 V
Output High Current
IOH
-10
mA
VOH = 2.4V
Input High Leakage
ILIH
+1
µA
VIN = VDD
Input Low Leakage
ILIL
-1
µA
VIN = 0V
mA
VOL = 0.4V
mA
VOH = 2.4V
mA
VOL = 0.4V
-12
OUT12t - TTL level output pin with source-sink capability of 12 mA
Output Low Current
IOL
Output High Current
IOH
12
16
-14
-12
OD16 - Open-drain output pin with sink capability of 16 mA
Output Low Current
INts
-
IOL
12
16
TTL level Schmitt-triggered input pin
Input Low Threshold Voltage
Vt-
0.5
0.8
1.1
V
VDD = 3.3V
Input High Threshold Voltage
Vt+
1.6
2.0
2.4
V
VDD = 3.3V
Input High Leakage
ILIH
+1
µA
VIN = VDD
Input Low Leakage
ILIL
-1
µA
VIN = 0 V
F75393
-14-
May, 2008
V0.16P
F75393
8.3 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.
t-SCL
2
uS
Start condition hold time
tHD;SDA
300
nS
Stop condition setup-up time
tSU;STO
300
nS
DATA to SCL setup time
tSU;DAT
50
nS
DATA to SCL hold time
tHD;DAT
5
nS
SCL and SDA rise time
tR
SCL clock period
MAX.
300
UNIT
nS
9. Ordering Information
F75393
Part Number
Package Type
Production Flow
F75393S
8-SOP Green Package
Commercial, 0°C to +70°C
F75393M
8-MSOP Green Package
Commercial, 0°C to +70°C
-15-
May, 2008
V0.16P
F75393
10. Package Dimensions
(F75393 8-MSOP Package )
F75393
-16-
May, 2008
V0.16P
F75393
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
1.27
0.40
0
10
DIMENSION IN INCH
MIN.
MAX.
0.053
0.069
0.010
0.004
0.013
0.020
0.008
0.010
0.150
0.157
0.188
0.196
0.050 BSC
0.228
0.016
0
0.244
0.004
0.050
10
(F75393 8-SOP Package)
Feature Integration Technology Inc.
Headquarters
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
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
F75393
-17-
May, 2008
V0.16P
11. Application Circuit
Example
1 :
VCC3V
TEMPERATURE MONITOR (CPU THERMAL DIODE)
D+
THERDA
THERDC
C1
2200pF
D+
C3
0.1u
R1
4.7K
R2
4.7K
R3
4.7K
R4
R
U1
Example
D+
D-
2 :
TEMPERATURE MONITOR (2N3906)
1
2
3
4
VCC
SCL
D+
SDA
DALERT#
THERM#
GND
8
7
6
5
SCLK
SDATA
F75393
1
D+
Q1A
2N3906
2
C2
2200pF
Address Trapping :
D+
3
ALERT#(PIN6)Pull-up Resistor
R4
R4
R4
R4
R4
R4
=
=
=
=
=
=
1K
4.7K
10K
20K
30K
47K
I2C
I2C
I2C
I2C
I2C
I2C
Address
Address
Address
Address
Address
Address
=
=
=
=
=
=
9Eh
98h
9Ch
6Ch
6Ah
68h
Title
Feature Integration Technology
Size
Document Number
CustomF75393 Application Circuit
Date:
-18-
Thursday , May 29, 2008
Rev
<Rev Code>
Sheet
1
of
1
May., 2008
V0.15P