FS5908 [FORTUNE]
Digital Temperature Sensor and Thermal Watchdog with I2C® Interface and SMBusTM Format;
| 型号： | FS5908 |
| 厂家： | 
Fortune Semiconductor |
| 描述： | Digital Temperature Sensor and Thermal Watchdog with I2C® Interface and SMBusTM Format |
| 文件： | 总22页 (文件大小：417K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
REV. 1.2 FS5908-DS-12_EN
NOV 2006
Datasheet
FS5908
Digital Temperature Sensor and Thermal Watchdog with C® nterface and SMM
Format
FS5908
Fortune Semiconductor Corporation
富晶電子股份有限公司
28F., No.27, Sec. 2, Zhongzheng E. Rd.,
Danshui Town, Taipei County 251, Taiwan
Tel.：886-2-28094742
Fax：886-2-28094874
www.ic-fortune.com
This manual contains new product information. Fortune Semiconductor Corporation reserves the rights to
modify the product specification without further notice. No liability is assumed by Fortune Semiconductor
Corporation as a result of the use of this product. No rights under any patent accompany the sale of the
product.
Rev. 1.2
2/22
FS5908
1. General Description
FS5908 is a precise environmental temperature sensor chip to digitize and format the technology of
environmental temperature. It is also one of SOC (System On Chip) chips of FSC Company that combined with
sensor. The chip includes:
Digital Silicon Temperature Sensor (Resolution: 0.125℃)
Calibration Algorithm
PROM Coefficients
I²C Interface and SMBus Format
Open Drain ALARM (“Interrupt” and “Comparator” mode)
The internal control register status, calibration coefficient, I²C address lines and so on can be generated
through PROM to meet the application requirement at production. When the chip is power on, all internal status
will be at programmed default status so that FS5908 is flexible for variety applications.
A variable input voltage between 2.5V~5.5V of FS5908 will not influence the output of the temperature sensor.
2. Applications
Personal Computers.
Measuring Instruments.
Industry Control.
Household Appliance.
Automobile Temperature Deection.
Sports and Health Equipment.
System Temperature Management and Environmental Temperature Measurement.
All related products that need to measure temperatdigital format.
3. Features
Chip can measure temperature by itself withouother external conent.
8 pin SOP package.
I²C digital interface (SMBus Format).
Temperature value can be read at any timvia I²C interface.
Provide open drain over/r temperature warning pin (ARM) in Comparator Mode or Interrupt Mode.
Power on default is in Cor Mode.
Readable upper and lowund register (TUpLim anTLwLimvia I²C interface.
Upper and lower bound reister can be one time programmed according to the application at production.
TUpLim and TLowLim will be the programmed defat 80℃ and 75℃ when power on.
Different temperature accuracy requirement for ety applications can be met by calibration under different
temperature.
When micro-controller is not connec908 can be an independent temperature sensor (Watch Dog) or
thermostat.
Reducing the current consumption to minmum in Stand-by Mode.
The I²C interface of the chip can connect up o 128 FS5908 chips.
Low voltage detection.
The I²C address line of FS5908 is composed by an external address select line (A0) and the address select line
(A6-A1), which can be proed by PROM. When A0 is 0, A6 ~ A1 is forced to setup to 100100; when A0 is
1, A6 ~ A1 Å PROM9<7:
Rev. 1.2
3/22
FS5908
4. Ordering Information
FS5908
FS5908-P:
Lead Free
5. Pin Configurations
1
2
3
4
A0
SDA
ALARM
VDD
8
7
6
5
SCL
CS
VSS
NC
6. Pin Description
Pin
Name
Funtion
The adess lines of the chip controlleI2C interface are A6, A5, A4A3, A2, 1 and A0. A0 is
controlled y external pins. A6 ~ A1 cae setp by programming thPROM in the chip. When A0 is 0,
A6 ~ A1 is 100100. When A0 is ~ A1 ← PROM9<7:2>
1
A0
2
3
4
5
6
7
8
SCL
CS
Signal Clock Line of I2C Serial sion
Chip Select (the chip is when et to high)
Chip Negative Powr Source Input Pin (0V)
VSS
NC
When imal operation, it connects to d.
Chip PositiPower Source Input Pin (2.5V~5.5V)
VDD
ALARM Overheat (Overcool) Warning OutpOpen-drain Output
SDA Double Directions Data TissioLine of I2C Serial Transmission
Rev. 1.2
4/22
FS5908
7. Functional Block Diagram
PROM1<7:0>
~
PROM7<7:0>
PR OM
C ont rol R eg.
I2
R EG6< 7:2> < - - PR OM 9< 7:2>
C add. (A6~A1)
=
addlock= 1
I2
A6
C
~
add. (A6~A1)
A1 <-- 100100
addlock= 0
A0
I2C Interf ace Ckts.
St at es R eg.
R EG1<7: 0>
SC L
(
SMBus Format )
SD A
T e
R EG0< 10:0> = Tdata @ set_adco0
R EG0< 11:0> = Te @ set_adco= 1
D i g i tal Si l i co n
Temp er atu r e Sen s
CS
VD D
TeA<110>
TdA<1>
GAIN<11:>
=
=
OP17:0>+OTP2<7:4> <-- PR7:0>
OTP2<2:0>+OTP3<7:0> <-- PR<2:0>
OTP4<7:0>+OTP5<7:4> - PRO4<7>
+
+
PROM2<7:4>
PROM3<7:0>
+ PROM5<7:4>
VSS
Tdata Calcultion
=
Td ata
AL AR M
AL AR M
TLowLim <10: 0>
OTP8<7: 5>+OTP6<0> <-- PR OM8<7: 5>
=
+
PR OM6<7: 0>
TU pLim <10: 0>
OTP8<4: 2><7: 0> <-- PR OM8<4: 2>
Td ata
=
+ PR OM7<7: 0>
TL o wL i m
TU p L i
Rev. 1.2
5/22
FS5908
8. Typical Application Circuit
VDDup
VDDup
VDD (2.5V~5.5V)
10K Ω 10K Ω
10K Ω
A 0
SDA
ALARM
VDD
1
2
3
4
8
7
6
CPU
(μ-processor)
SCL
CS
VSS
NC
Inter r upt Input Pin
Or
Gener al Input Pin
VSS
ApplicationⅠ:
Micrpocessor controls Circuit
When control FS5908 by microprocessor, the SDterminal of the microprocessor must be open drain
double-way I/O pin.
VDD (2.2V~5.5V)
VD
VDDup
VCC (12V)
10
10KΩ
10KΩ
10KΩ
12V 300mA
Fan Motor
CPU
(μ-processor)
A 0
SDA
ALARM
VDD
1
2
4
8
7
6
5
SCL
CS
VSS
NC
VSS
Cntrol Fan Motor via Microprocessor
ApplicationⅡ:
Digital Temperature Snsor: Able to combine with any CPU and Microprocessor.
Rev. 1.2
6/22
FS5908
VDD(2.5V~5.5V)
Heater
10KΩ
Heater
Power
VDD
f loat ing
A 0
SDA
1
2
3
4
8
7
6
5
SCL
CS
ALARM
VDD
2N3904
VSS
C
VSS
Setup the heater theat in 75°C (TLowLim = 75℃), close if the temperature han
ApplicationⅢ:
80℃ (TUpLim = 80℃).
Thermal Watchdog: Such as heater, refrigerator and various environment monitor.
9. Absolute Mximum Ratings
Supply Voltage ----------------------------------------------------------------------------------------------------0.3V to 5.5V
Voltage at any Pin
-----------------------------------------------------------------------------------0.3V to (VDD+0.3)V
Input Current at any Pin (Note 2)
Package Input Current (Note 2)
------------------------------------------------------------------------------- 5mA
-----------------------------------------------------------------------------20mA
ALARM Output Sink Current --------------------------------------------------------------------------------- 10mA
ALARM Output Voltage ------------------------------------------------------------------------------------------ 5.5V
Storage Temperature --------------------------------------------------------------------------------------65℃ to 150℃
Soldering Information, Leamperature
Vapor Phase (60 secon----------------------------------------------------------------------------------------215℃
Infrared (15 seconds) --------------------------------------------------------------------------------------------220℃
ESD Susceptibility (Note 3)
Human Body Mode-------------------------------------------------------------------------------------------------------- 2000V
Machine Mode ------------------------------------------------------------------------------------------------------------200V
10. Operating Ratings
Specified Temperature Range (Note 4)
---------------------------------------------------------------------55℃ to 125℃
Supply Voltage Range (VDD) --------------------------------------------------------------------------------------2.5V to 5.5V
Note 1:
AC electrical specificationapply when operating the device beyond its rated operating conditions.
Note 2: Whethe input ge (Vi) at any pin exceeds the power supply (Vi<GND or Vi>+Vs) the current at
Absolute MaxiRatings indicate limits beyond which damage to the device may occur. DC and
that pin should e limted to 5mA. The 20mA maximum package input current rating limits the number of pins
that can safely excd the power supplies with an input current of 5mA to four.
Note 3:
Human bdy model, 100pF discharged through a 1.5KΩ resistor. Machine model, 200pF
discharged directly into each pin.
Note 4:
FS5908θIA (thermal resistance, junction-to-ambient) is 0.125℃/mW.
Rev. 1.2
7/22
FS5908
11. Electrical Characteristics
(Unless otherwise noted, these specifications apply for VDD = 3.0V (Note 5). Boldface limits apply
for TA = TJ = TMIN to TMAX; all other limits TA = TJ = +25°C, unless otherwise noted.)
Parameter
Test Conditions
Min (Note6) Typ (Note10)
Max (Note6)
Unit
Supply Voltage
2.5
3.0
300
330
3
5.5
V
I2C Inactive
450
500
4
μA
μA
μA
℃
℃
ms
I2C Active
Quiescent Current
Shutdown Mode
TA = 0℃ to +50℃
TA = -25℃ to +100℃
TA = -5℃ to +125℃
±1.0
±2.0
±3.0
Temperature Accuracy
Temperature Resolution
105
Temperature Conversion Time
(Note 7)
ALARM Output Saturation
Voltage
OUT=10mA (Note 8)
(Note9)
0.5
8
V
ALARM Delay
1
Conversions
12. Logic Electrical Characteristic
12.1 Digital DC Characteristics
(Unless otherwise noted, these spcificatapply for VDD = 3.V (Note 5). Boldface limits apply for TA = TJ =
MIN to TMAX; all other limits = TJ = +25°C, unless otherwise noted.)
T
Min
Typ
Max
Symbol
Parameter
Test Conditins
Unit
(Note6)
(Note10) (Note6)
VIN(1)
VIN(0)
IIN(1)
IIN(0)
CIN
Logical 1 Input Voltge
Logical 0 Input Voltage
Logical 1 Input Current
Logical 0 Input Current
All Digital Inputs
VDD×0.7
-0.3
VDD+0.5
V
VDD×0.3
V
V
0V
0.005
1.0
μA
μA
pF
μA
V
-0.005
-1.0
20
IOH
High Level Output Currnt
Low Level Output Voltage
Output Fall Tim
VOH=5V
100
0.4
VOL
TOF
IOL=3mA
CL=400pF, I0=3mA
250
ns
Rev. 1.2
8/22
FS5908
12.2 I2C Digital Switching Characteristics
(Unless otherwise noted, these specifications apply for VDD = 3.0V (Note 5). Boldface limits apply for TA = TJ =
MIN to TMAX; all other limits TA = TJ = +25°C, unless otherwise noted.)
T
The switching characteristics of the FS5908 fully meet or exceed the published specifications of the I2C Bus.
The following parameters are the timing relationships between SCL and SDA signals related to the FS5908.
They are not the I2C bus specifications.
Min
Typ
Max
Symbol
Parameter
Test Conditions
Unit
(Note6)
(Note10)
(Note6)
t1
t2
t3
SCL (Clock) Period
10
100
μs
ns
ns
Data In Set-up Time to SCL High
Data Out Stable after SCL Low
120
40
SDA Low Set-Up Time to SCL Low
(Start Condition)
t4
t5
120
s
SDA High Hold Time after SCL High
(Stop Condition)
t1
SCL
SDA
Data in
t4
t5
t2
SDA
Data out
Note 5:
FS5908 will properly over the +Vs suoltage range from 2.5V to 5.5V. The devices are
tested and specified for ccuracy at their normal supvoltge, Accuracy will typically degrade 0.15℃/V
of variation in VDD.
Note 6:
Note 7:
Limits are guaranteed to Fortune AOQAverae Outgoing Quality Level)
This specification is provided only tcathow often temperature data is updated. The FS5908
can be read at any time without regard to nversn state (and will yield last conversion result). If a conversion
is in process it will be stopped and resafter the end of the read.
Note 8:
For best accuracy, minimutput loading. Higher sink currents can affect sensor accuracy with
internal heating. This can cause an erroof 0.25℃ at full rated sink current and saturation voltage based on
junction-to-ambient thermal resistance.
Note 9:
ALARM Delay is user programmable up to 8 over limit conversions before O.S. is set to minimize
false tripping in noisy environmens.
Note 10:
Typical are at T5℃ and represent most likely parametric norm.
Rev. 1.2
9/22
FS5908
12.3 Typical Performance Characteristics
Normal Mode current at I2C Active with Temperature(Average)
350
300
250
200
150
100
50
0
-30
-15
0
15
30
45
60
75
90
105
0
Temperature(
)
℃
Normal Modcurrent t I2C Inactive with mperature(Average)
350
300
250
200
150
100
50
0
-30
-15
0
15
0
45
75
90
105
120
Temperature(
)
℃
Average TempeError
4.0
3.0
2.0
1.0
0.0
-1.0
-2.0
-3.0
-4.0
-30
-15
0
15
30
45
60
75
90
105
120
Temperature(
)
℃
Rev. 1.2
10/22
FS5908
13. Function Description
13.1 Temperature Measurement
FS5908 measures the environmental temperature around the chip, and updates the temperature value in
digital format via the register. Users can read these updated temperature values at any time through I2C
interface.
13.2 Overheat/Overcool Warning
FS5908 can set up one set of the warning temperatures TUpLim and TLowLim (See below diagram). When the
measured temperature reaches the warning temperature, the ALARM signal will notify microprocessor or
enable directly the cooler fan, heater and so on. The related warning temperature of ALARM is decided by
upper bound register (TUpLim) and lower bound register (TLowLim) that can be changed at any time as
request.
ALARM Output Change
According to Temperature
TUpLim
Temprature
Changig Curve
TLowLim
ALARM (Comparision Mode.
int/cmp is 0; arm_inv is 0)
[Apply to Overheat Warning
Mode]
ALARM (Comparision Mode,
int/cmp is 0; arm_inv is 1)
[Apply to Overcool Warning
Mode]
ALARM (Interrupt Mode,
int/cmp is 1; arm_inv is 0)
[Apply to Overheat or
Overcool Warning Mode]
★
★
★
★
★
★
ALARM (Interrupt Mode,
int/cmp is 1; arm_inv is 1)
[Improper Mode]
T
★:In interrupt mode, after AM pigenerates an interrupt signal, ALARM will be reset only when any one
register of FS5908 is read ystem enters the stand-by mode.
Rev. 1.2
11/22
FS5908
13.2.1 ALARM Pin and arm_inv Setup
arm_inv bit in the control register decides the ALARM pin output mode (please refer to the diagram on previous
page), the relationship between arm_inv and ALARM is as follow:
arm_inv is 0: In comparison operation mode, if the temperature is lower than the lower bound setup, ALARM
is logic standard 1; if the temperature is higher than the upper bound setup, ALARM is logic
standard 0.
In interrupt operation mode, ALARM in general situation is logic standard 1; if sending out the
interrupt signal, ALARM is logic standard 0.
arm_inv is 1: In comparison operation mode, if the temperature is lower than the lower bound setup, ALARM
is logic standard 0; if the temperature is higher than the upper bound setup, ALARM is logic
standard 1.
In interrupt operation mode, ALARM in general situation is logic standard 0; if send out the
interrupt signal, ALARM is logic standard 1.
In comparison mode, ALARM output can be used to enable cool fan or emergency system, uce
system clock. FS5908 in comparisomode w ilnot reset ALARM sthen entering stand-b
In interrupt mode, the arm_inv should be set to 0 no matter that it is applied to overcool warning or overheat
warning.
Once detected the temperature exceeded the upper bond value, ALARM will send t the interrupt signal
immediately. In the ean time, to read any FS5908 register va I2C interface will clear ALARM interrupt signal.
ALARM will send out the nterrupt signal again until cted the temperature being lower han the lower bound
value. It is the same to clar the interrupt signal vieadig the register. FS5908 in interrupt mode will reset
ALARM output when entering stand-by mode
13.2.2 ALARM Output
ALARM output pin outputs pen-drain (see below diagrawhicwithout inner circuit promotion design. It
will not generate logic hdard unless offering the aonacurrent promotion from external (promotive
resistor generally). The sof promotive resistor dendon the system.
Vp
Req
ALARM
Alarm Generator
Ron
based on
m and TLowLim
Iabove diagram, when current I flows, MOS power consumption is:
Pav =I2．Ron［I=VP / (Req+Ron)］
Rev. 1.2
12/22
FS5908
And the temperature accuracy of the chip that influenced by the power is shown as below table:
Pav
1mW
Influenced Temp. (Δ℃)
0.125
0.625
1.125
1.750
5mW
10mW
20mW
13.3 Standby Mode (shutdown=Reg1<0>)
To setup Shutdown bit of control register will enter the Stand-by Mode. In stand-by mode, the standard current
consumption of FS5908 will be lower than 100uA. In interrupt mode, if ALARM enters stand-by mode in action
status, then the action status of ALARM will be clear, but if it enters stand-by mode when in comparison mode,
ALARM will keep the status of before entering. In stand-by mode, all circuits are close except I2C circuit.
13.4 Power Off (CS)
When set CS to 0, then the chip is cose, and the current consumptiower than 5μA.
When set CS to 1 (voltage is VDD), then the chip is enabled, and all status will be default operations. Please
see below diagram for the dscription f default status.
Take the chip as Watchdog (independent temperature senor).
SCL: connect to grond
SDA: floating
CS: connect to VDD
A0: connect to ground or VDD
Please see the diagram on page 3: Application I
13.5 set_arm_cnt (Reg 1<4:3)
Inside the chip, every remeasuring temperature wupdated per 1/4 second. When the measuring
temperature reaches thng temperature, the ner wing ounter will increase counting, and only when
the value of the warning unter is equal to the setp times in set_arm_cnt, ALARM pin will send out the
warning signal. During the rocess, any record of measuring temperature that not reach the warning
temperature will make the system clear the warcounter to be 0 so that the proper setup for set_arm_cnt
can avoid noise or interfere making ALARM to aerror.
set_arm_cnt<1:0>
sary compare output times to make ALARM output change
00
01
10
11
1 (Default)
2
4
8
13.6 Low Batery Detection (setlowbat=Reg1<7>)
etlowbat
0
=1
1
=1
Rog0<14>=lowbat
@VDDΡ2.4V
@VDDΡ2.2V
Rev. 1.2
13/22
FS5908
14. Internal Register Structure and Data Format
Point er f 2h
s el_opt <3: 0>@0000 or 1111
PR OM1<7: 0>
OTP1<7: 0>
Point er f 3h
OTP2<7: 0>
Point er f 4h
OTP3<7: 0>
Point er f 5h
OTP4<7: 0>
Point er f 6h
OTP5<7: 0>
Pointer f f h
(R/ W )
(R/ W )
(R/ W )
(R/ W )
(R/ W )
s el_opt <3: 0>@0001 or 1111
PR OM2<7: 0>
s el_opt <3: 0>@0010 or 1111
PR OM3<7: 0>
s el_opt <3: 0>@0011 or 1111
PR OM4<7: 0>
s el_opt <3: 0>@0100 or 1111
PR OM5<7: 0>
s t <3: 0>@0101 or
PR OM6<7: 0>
I D c ode = 0010, 0110 (R
s l_opt <3: 0>@0110 or 1111
PR OM7<7: 0>
Point er 00h
Tem pR egis ter (R eg0; R )
s el_opt <3: 0>@0111 or 1111
PR OM8<7: 0>
Poit er 01h
ControlRegister(Reg1;R/W)
Def ault:00h
s el_opt 3: 0>@1000 or 1111
PR OM9<7: 0>
Point er 02h
De( Iitial States)
:
Upper Bound Reg iste;R/W)
1. mp. upper and lower bound
ar e loaded in the r eg . when
power r eset or CS r eset.
2. he default value means the
r esour ce and status of the
cor r esponding r eg . value when
power r eset or CS r eset.
Default:
PROM8<47<7:0>
Point er 03h
Lower Bog ister (TLowLim ;R/W)
Default:
OM8<7:5>,PROM6<7:>
Point er 0h
3.
4.
PROM 8<0> is close bit.
PROM 9<1> is addlock bit.
Tes t R egis t er (R eg4; R /
Point er 05h
I2 C Add. Reg. (Reg6;R)
Add. Code
A6~A1<---PROM9<7:2>
Address Code
A6~A1<---100100
Tes t R egis ter ()
addl oc k
= 0
addl oc k
= 1
Point er R egis t er
D ef au: 00h
SC L
SD A
I2 C I nt erf ac e
Rev. 1.2
14/22
FS5908
14.1 Temperature Register (Pointer=00h, Read Only)
Pointer Name Type 15
14
13
12
11 10
9
8
7
6
5
4
3
2
1
0
lowbat alarm high low Tdata<10:0>
Set_adc0=0
Set_adc0=1
h’00
Reg0
R
adc_trans
0
0
1
Te<11:0>
When set_adco = 0:
Reg0<15> (adc_trans): When the temperature output value is updated, the bit becomes 1; when the register is
read, the bit is cleared to 0.
Reg0<14> (lowbat):
Low battery warning. When the bit is 1, it means the operating voltage of the chip is
lower than the setting voltage. For the setting method, please refer to “2.2 Control Register Reg1<7>
(setlowbat)”.
Reg0<13> (alarm):
The bit is always comparison mode output. When the temperature value is hgher than
(or equal to) the upper bound value, the bit becomes 1, and until the temperature value is lowequal
to) the lower bound value, the bit beomes 0.
Reg0<12> (high): When the temperatue value is higher than (or eql to) the upper bound value, the bit is 1,
on the contrary, the bit is 0.
Reg0<11> (low): Whethe temperatue value is lower thn (or equal to) the lower bouvaluethe bit is 1, on
the contrary, the bit i0.
Reg0<10:0>:
Temperature data. The follong tale is the meaning that every bit stands for:
10
9
8
7
6
5
4
3
2
1
0
+/-
64
32
16
8
2
1
0.
0.25
0.125
Digit Oe
Dit
Ex: Temperature
Hexadecmal
+125℃
+25℃
+0.5℃
0℃
011-1110-1000
000-1100-1000
000-0000-0100
111-1111-1111
111-11
111-001000
100-0001-100
0C8
04
7FF
-0.5℃
-25℃
-125℃
7FC
738
418
Note: When the temperature is equal or lower than 0℃, the temperature is expressed by 2’s complement.
When set-adco = 1:
Output is the drect output digital silicon temperature sensor Te<11:0>.
Rev. 1.2
15/22
FS5908
14.2 Control Register (Pointer=01h, Readable and Writable)
Pointer
h'01
Name
Reg1
Type
R/W
7
6
5
4
3
2
1
0
setlowbat rst_alarm set_adco set_arm_cnt<1:0>
Low battery warning setup. 0 is 2.4V; 1 is 2.2V.
arm_inv int/cmp
shutdown
Reg1<7>=setlowbat:
Reg1<6> (rst_alarm): When set to 1, alarm, high, low and so on bits and the warning signal of ALARM pin
can be directly cleared; when set to 0, the above signals would be recalculated, and they can be used after
reset the upper and lower bound.
Reg1<5> (set_adco): When set to 0, the bit is Tdata<10:0> output; when set to 1, it is Te<11:0> output. Please
see 2.1.
Reg1<4:3> (set_arm_cnt<1:0>):
If the temperature exceeds TUpLim or lower than TLowLim, ALARM output standard will be changed. The two bits
decide the necessary continuing trigger times to changes ALARM output tandar. (Please see 1
Reg1<2> (arm_inv):
Reg1<1> (int/cmp):
Setup ALARM pioutput mode. Pleas1.2.1.
0 is comparison mode; 1 is interrupt mode. Please see 1.2.1.
Reg1<0> (shutdown): Stand-by mode0 is normal operaion; 1 s stand-by mode. Pleee 1.3.
14.3 Upper Bound Register (TUpLim, Poer=0h) and Lower Bound Register (TLowLim,
Pointer=03h) (Readable and Writa
15
14
13
12
11
10
9
8
6
5
3
2
1
0
TUpLim
(NC)
+/
10
632℃ 16℃ 8℃
℃
2℃
1℃
0.5℃
0.25℃
0.125℃
15
14
13
12
9
8
7
4
3
2
1
0
TLowLim<10:0>
+/- 64℃ 32℃ 8℃
(NC)
4℃
2℃
1℃
0.5℃
0.25℃
0.125℃
The default values can be programmed in PROPROM6, PROM7, and PROM8) before out of factory. When
power on or produce CS, they will be pefault related registers from PROM. The meanings of bits are the
same as the temperature register (Fplease see “2.1 Temperature Data Format”). When bit<10>=0, it
means the positive (+), and when bit<1=1, it means the negative (-).
For the upper bound register (TpLim) and lower bound register (TLowLim), please see the diagram on Page11.
T
T
LowLim <10:0> ← {PROM8 <7:5PROM6<7:0>}
UpLim <10:0> ← {PROM8 <4:2>, PROM7<7:0>}
OTP6 <7:0> ← PROM6 <
OTP7 <7:0> ← PROM7 <
OTP8 <7:0> ← PROM8 <7:0>
Rev. 1.2
16/22
FS5908
14.4 Default Status
When power on or CS is produced, FS5908 will enter default operation mode. For its status, please refer to the
diagram on Page11.
Initial States:
1.
2.
3.
Pointer default: 00h
Control register default: 00h
The corresponding location of OTPX<7:0> and PROM1~PROM9:
OTP1<7:0> ← PROM1<7:0>
OTP2<7:0> ← PROM2<7:0>
OTP3<7:0> ← PROM3<7:0>
OTP4<7:0> ← PROM4<7:0>
OTP5<7:0> ← PROM5<7:0>
4.
5.
6.
7.
TLowLim<10:0> ← {PROM8<7:5>, PROM6<7:0>}
TUpLim<10:0> ← {PROM8<4:2>, PROM7<7:0>}
OTP9<7:0> ← PROM9<7:0>
The upper and lower bound seup will load in the upper and lower bound register when poCS
reset.
8.
9.
Default value means the values resource and status of the cosponding register during poset or
CS reset.
PROM8<0> is close it. When it is programmed as High (logic 1), no any prograing action can be
done to PROM again.
10. PROM9<1> is addlock bit. When it is programmed as High (logic1), I2C address i{PROM9<7:2>, A0},
or I2addess is {100100,A0}
FS5908 can be connected o independent thermoreulator without via I2C interface control so that all of the
registers of FS5908 will enter the default stat
14.5 Test Register (Pointer=04h, =05h, Readable and Writable)
Reg4<7:0> and Reg5<7:0> are thtest register for mass productin, please ignore them in general use, lest
influence IC normal oper
14.6 I2C Address Register (Pointer=06h, ROnly)
Pointer
h'06
Name
Reg6
Type
R
7
6
5
4
3
2
1
0
I2C addr<6:1>
addlock
(rv)
Reg6<7:2>:I2C Address Lines A6 ~ A1
Reg6<1>: A6 ~ A1 can be setup via programming PROM in the chip. When A0 is 0, it is 100100; when A0 is 1,
A6 ~ A1 ← PROM9<7:2>.
Reg6<7:2>:register storedress A6 ~ A1 which programmed by PROM9<7:2>, but when A0 is 0, I2C
address A6 ~ A1 is default and will not be stored in Reg6<7:2>. This should be noticed in use.
Rev. 1.2
17/22
FS5908
15. Digital Interface
FS5908 takes I2C as digital data transmission interface. It has SCL and SDA two signal lines: SCL is a clock
signal that is the input pin in FS5908, and SDA is two-way serial data I/O pin. For the I/O format, please refer to
SMBus specification.
15.1 Address
Base on I2C interface rules, FS5908 has 7 bits address plus 1 bit read and write control signal (R/W). When
R/W is 0 means writing; 1 means reading. The complete address bytes are as follow:
7
6
5
4
3
2
1
0
A6
A5
A4
A3
A2
A1
A0
R/W
A6 ~ A1 can be setup via programming PROM in the chip.
When A0 is 0, it is 100100.
External Pin
Read and Write Control
When A0 is 1, A6 ~ A1 ← PROM9<7:2>
15.2 Pointer
Pointer is to select the register to read and write. Its corresponding relationship with register is
Pointer
Name
Length
Status
h’00
h’01
h’02
h’03
h’04
h’05
h’06
h’f2
h’f3
h’f4
h’f5
h’f6
h’f7
h’f8
h’f9
h’fa
h’ff
REG0
16 bits (2 byte
8 bi1 byte)
1bits (2 bytes)
16 bits (2 bytes)
bits (1 byte)
8 bs (1 byte)
8 bits (1 byte)
8 bits (1 byte)
8 bits (1 byte)
8 bits (1 byte)
8 bits (1 yte)
8 bit1 byte
8 1 be)
8 bi(1 byte)
8 bits (1 byte)
8 bits (1 byte)
8 bits (1 byte)
R
REG1
R/W
R/W
R/W
R/W
R
TUpLim
TLowLi
REG4
REG5
REG6
R
PROM1
PROM2
PROM3
PROM4
OM5
OM6
ROM7
POM8
PROM9
IDcode
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
15.3 Register Writing Process
The process to write FS5908 register via 2C includes:
(1) Write address
(2) Write pointer
(3) Write dat
The first byte of writing date highest byte of the record, and the first bit of every byte is the highest bit of
the byte.
Rev. 1.2
18/22
FS5908
15.3.1 The control register with writing data length 1 byte
1
9
1
9
1
9
SCL
SDA
A4 A3
A1 A0
W
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
A6 A5
A2
Ack
by
FS5908
Ack
by
FS5908
Ack
by
FS5908
Address
Byte
Pointer
Byte
Start by
Master
Stop by
Master
Data Byte
15.3.2 The register with writing data length 2 byte
1
9
1
9
1
9
1
9
SCL
SDA
D14
A6 A5
A4 A3 A2 A1 A0
W
D7 D6 D5 D4 D3 D2 D1 D0
D15
D13 D12 D11 D10 D9 D8
D7 D6 D5 D4 D3 D2 D1 D0
Ack
by
FS59
Ack
by
FS5908
Ack
by
FS5908
Ack
by
FS5908
Address
Byte
Poter
Byte
Start by
Master
Stop by
aster
Data Byte
Data Byte
The process to read FS5908 regiser via I2C ncludes complete ng process (3.4) and ing
process (3.5).
15.4 Register Complete Reading Process
15.4.1 Complete Reading Proces and Repeat Reading Process. Complreading process
includes the following steps
(1) Write address
(2) Then write pointer
(3) Write address again
(4) Read data
The first byte of reata is the highest be of the record, and the first bit of
every byte is the highit of the byte.
15.4.2 The controlled rewith complete reading data th 1 byte
1
9
1
9
SCL
SDA
A3 A2 A1 A0
A6 A5 A4
W
D7 D6 4 3 D2 D1 D0
Ack
by
FS5908
Ac
F
Address
Byte
Pointer
Byte
Start
by
Master
1
9
1
9
SCL
A6 A5 A4 A3 A2
R
D7 D6 D5 D4 D3 D2 D1 D0
SDA
No
Ack
by
Ack
by
FS5908
Address
yte
Stop
by
Master
Repeat
Start by
Master
Data Byte
Master
Rev. 1.2
19/22
FS5908
15.4.3 The register with complete reading data length 2 byte
1
9
1
9
SCL
SDA
A6 A5 A4 A3 A2 A1 A0
W
D7 D6 D5 D4 D3 D2 D1 D0
Ack
by
FS5908
Ack
by
FS5908
Address
Byte
Pointer
Byte
Start
by
Master
1
9
1
9
SCL
A6 A5 A4 A3 A2 A1 A0
R
D15 D14 D13 D12 D11 D10 D9 D8
D7 D6 D5 D4 D3 D2 D1 D0
SDA
No
Ack
by
Ack
by
FS5908
Ack
by
Master
Address
Byte
Stop
by
Repeat
Start by
Master
Data Byte
Data Byte
Master
15.5 Register Repeat Reading Process
15.5.1 Repeat reading process ncludes the following steps
(1)
(2)
Write address
Read data
When read by repeat ding process, the read rer ithe previous registethat apointed by complete
reading, that is, the registethat the pointer is setup.
15.5.2 The controlled register with repeat reata length 1 byte
1
9
9
9
SCL
SDA
D12
R
D15 D14 D13
D11 D10 D
DD6 D5 D4 D3 D2 D1 D0
A6 A5 A4 A3 A2
No
Ack
by
Ac
b
Ack
by
Address
Byte
Mster
FS5908
Start by
Master
Stop by
Master
Data Bye
Data Byte
Master
When read or write in I2C interface, if SDA sigs forced by FS5908 to logic low standard, it has to only
re-execute reading or writing process to ase. his stuation won’t happen in normal timing. It happens only
when the data length read by the user ller than the actual length of the register.)
After writing to the register of the chip, it hould take reading confirmation to make sure the written commands
not error.
Rev. 1.2
20/22
FS5908
16. Package Outline
16.1 SOP8
Dimensios in
eters
Dimensions in Inches
1.
Note
Symbol
2.
Package body size excludflash
and gate burrs;
n
Typ
Max
1.55
0.25
—
Min
Typ
Max
A
1.45 1.50
0.057 0.059 0.061
3.
4.
Dimension L is mee in gate plane;
A2
B
0.10
—
—
0.004
—
—
0.010
—
Tolerance 0.1unless otherwis
specified;
1.45
—
0.057
—
0.33
0.19
4.80
3.80
—
0.51
0.25
5.00
4.00
—
0.013
0.007
0.189
0.150
—
0.020
0.010
0.197
0.157
—
5.
6.
Controlling dimension is millime
converted inch dimensions are t
necessarily exact;
C
D
E
—
—
—
—
Followed from JEDEC MS-
—
—
E
1.27
—
0.050
—
H
L
5.80
0.40
—
6.20
1.27
0.10
80
0.228
0.016
—
0.244
0.050
0.004
80
—
—
Y
—
—
θ
00
—
00
—
Rev. 1.2
21/22
FS5908
17. Revision History
Ver.
Date
Page
Description
0.1
2002/4/24
All
Initial Release (Preliminary, Chinese Version)
Change to English Version
0.2
1.0
2002/10/29
2004/3/25
All
All
Change to official 1.0 release
1
Delete SOP8 ordering information
4
ESD Susceptibility: Human Body Model 2000V/Machine Model: 200V
Temperature Conversion Time: Typ 105 ms
Add SOP8 Package Outline
5
25
All
1
1.1
1.2
2005/10/27
2006/11/23
Change datasheet format
Add Lead Free ordering information
1
Revise Pin5 name from VDDPROM to NC
Revise Pin5 Name and Function Description to NC/No Connect
2
18~24
Delete Chap4/5 Program and Read PROM/Temperature Calibration nd
Production
All
3
Change datasheet format (CIS logo)
Feature: Delete MSOP package description
Delete o connect under Pin gurations
Add Pn5 Function DescriptionWhen in the normal operation, it connects to
ground.
3
4
Rev. 1.2
22/22
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