TX1125S

2021-11-03 来源：伴沃教育

TX1125S

TX1125S 3 1/2 Bit Clinical Thermometer

1. General Descriptions

TX1125S is a CMOS digital clinical thermometer IC for measuring body temperature in

Centigrade(℃) or Fahrenheit(℉) mode by its bonding option or by switch option. It also provides alarm and auto power off functions. The other electronic components are LCD display, thermistor,1.5V battery, ON/OFF switch, buzzer, resistors and capacitors.

2. Features

◆ Single 1.5V battery operation.

◆ Single-chip CMOS construction.

◆ Centigrade or Fahrenheit measurement can be selected by bonding option or switch option. ◆ Measurement range:

While TX1125S-1 / TX1125SS-2/TX1125S-4, +32.0～+41.9℃ (+90～+107.9℉) While TX1125S-3, +32.0～+43.9℃ (+90～+ 111.9℉) ◆ Resolution: 0.1℃(0.1℉).

Measurement accuracy: ±0.1℃(±0.2℉). ◆ One-key input switch for power ON/OFF. ◆ Highest temperature held.

◆ Auto power off after 8 min 40 sec (TX1125S-1) or 10 min (TX1125S-2/-3/-4). ◆ Display the last measured temperature.

-------------------------------------------------------------------------------------------------------------------------------------------------------------------- Shenzhen Green China Semiconductor CO.,LTD English specification of product V1.0 Renew Time：5/18/2010

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TX1125S

3. Function Block Diagram

OSCI OSCO PSW System OSC 32KHz Counter and Comparator 256HzCommon Waveform Generator COM1 COM2 COM3 Switch Detector Reference Timer Alarm Decode Voltage Doubler Alarm Buffer LCD Decoder ROM DataVA VB VLCD BUZ1 BUZ2 SA1 | SD1CF_OPTIONT_OPT1 T_OPT1 SM F_OPTION M_OPTIONRF RS SC Reference & Sensor Frequency Generator Sensor Open/Short Detector REF.FIX Counter & Sensor CounterROM Code AddressLow Voltage DetectorROMMemory Latch Buffer & Compare Function option LOWCCLFH 4. Function Descriptions 4.1 While TX1125S-1 <1> PSW: Push switch to power on or power off . <2> when power on: A. The LCD display󰁣 󰁣 (or ) about 2 sec. B. After A, show the temperature of last measured about 2 sec. C. After B, Show L 󰄊 (or 󰄋) about 1 sec. D. After C, when it is measuring. The 󰄊 (or 󰄋) will flash at the speed of 1 Hz. E. If the temperature 󰃖 32.0 󰄊(90 󰄋), then display L 󰄊(󰄋). F. If the temperature 󰃗or= 42.0 󰄊(108 󰄋), then display H 󰄊(󰄋). G. When measuring, the LCD will always display the highest temperature. H. If the first measured temperature doesn’t rise again, the measurement will not be over and it will auto power off in 3 minutes; Or from the second time’s measurement, if the temperature is not changed more than 4 or 8 or 16 seconds, the measurement is over and mark 󰄊(󰄋) stop flashing. I. When measurement is over, if the temperature 󰃗 37.4 󰄊(99.4 󰄋), the buzzer alarms \"Bi-Bi-Bi󰄷󰄷 Bi-Bi-Bi󰄷󰄷\" for 4 sec, as follows: Bi󰄷󰄷󰄷󰄷󰄷󰄷Bi󰄷󰄷󰄷󰄷󰄷󰄷Bi󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷 0.125S 0.125S 0.125S 0.125S 0.125S 0.375S If the temperature 󰃙 37.4 󰄊(99.4 󰄋), the buzzer alarms \"Bi-Bi-Bi-Bi-\" for 4 sec, as follows: Bi󰄷󰄷󰄷󰄷󰄷󰄷 0 5S 0.5S J. It will auto power off when measurement is over than 8 minutes 40 seconds. K. When measurement is over, if the temperature rises within 8 minutes 40 seconds, then -------------------------------------------------------------------------------------------------------------------------------------------------------------------- Shenzhen Green China Semiconductor CO.,LTD English specification of product V1.0 Renew Time：5/18/2010

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TX1125S

remeasure the temperature, but the 󰄊 (󰄋) mark will not flash again. When remeasurement is over, the buzzer will not alarm again.

<3> When push switch, buzzer will alarm \"Bi\" about 0.125 sec. <4> When power off: the stand-by current󰃙0.5uA. <5> The frequence of the buzzer is 5.3khz.

<6> After <2>-C, if detect low voltage(1.35 󰃔0.05 V):

The battery mark \" \" flashes at the speed of 1Hz and the measurement maybe not accurate, which means thermometer’s battery must be changed.

<7> When TEST2 pin is floating, the LCD displays the highest value, not the real time value, in

order to adjust the reference resistance R3 during the process of producing. When connected to VDD, the LCD displays the real time value.

<8> 󰄊/󰄋(CLFH Pad) function is used by bonding option.

CLFH CONNECTED TO VSS󰄊 NO CONNECT 󰄋

<9> Thermometer others charter is as follows:

Temperature range

Accuracy Resolution

32.0󰄊 ~41.9󰄊 90󰄋 ~ 107.9󰄋

󰃔0.1 󰄊 0.1 󰄊

󰃔0.2 󰄋 0.1 󰄋

4.2 While TX1125S-2 <1> PSW: Push switch to power on or power off.

<2> When power on:

A. The LCD display (When (T_OPT1=NC) or ( When (T_OPT1=0) about 2 sec.

B. After A, show the temperature of the last measured (and “M” When T_OPT1=0) about 2 sec.

C. After B, Show L󰄊 (or 󰄋) about 1 sec.

D. After C, when it is measuring. The 󰄊 (or 󰄋) will flash at the speed of 1 Hz. E. If the temperature 󰃖 32.0 󰄊 (90 󰄋), then display L 󰄊 (󰄋).

F. If the temperature 󰃗or = 42.0 󰄊 (108 󰄋), then display H 󰄊 (󰄋). G. When measuring, the LCD will always display the highest temperature.

H. If the measured temperature is not changed more than 16 sec, the measurement is over and mark 󰄊 (󰄋) stop flashing.

I. When measurement is over, if the temperature 󰃗 37.4 󰄊(99.3 󰄋), the buzzer alarms \"Bi-Bi-Bi󰄷󰄷 Bi-Bi-Bi󰄷󰄷\" for 4 sec, as follows:

Bi󰄷󰄷󰄷󰄷󰄷󰄷Bi󰄷󰄷󰄷󰄷󰄷󰄷Bi󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷

0.125S 0.125S 0.125S 0.125S 0.125S 0.375S

If the temperature 󰃖 37.5 󰄊(99.5 󰄋), the buzzer alarms \"Bi-Bi-Bi-Bi-\" for 4 sec, as follows:

Bi󰄷󰄷󰄷󰄷󰄷󰄷 0.5S 0.5S

J. It will auto power off when measurement is over than 10 minutes.

L. When measurement is over, if the temperature rises within 10 min, the 󰄊 (󰄋) mark will flash again (repeat from the step of< 2>-D).

<3> When push switch, buzzer will alarm \"Bi\" about 0.165 sec.

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TX1125S

<4> When power off: the stand-by current 󰃙 0.5 uA. <5>The frequence of the buzzer is 5.3khz,

<6> After <2>-C, if detect low voltage(1.35 󰃔0.05 V):

A: When T_OPT1=NC:

The battery mark \" \" flashes at the speed of 1Hz and the measurement maybe not accurate, means thermometer’s battery must be changed.

B: When T_OPT1=0:

The LCD display flashes at the speed of 1Hz and the measurement maybe not accurate, means thermometer’s battery must be changed.

<7> When TEST2 pin is floating, the LCD displays the highest value, not the real time value, in order to adjust the reference resistance RF during the process of producing. When connected to VDD, the LCD displays the real time value. <8> 󰄊/󰄋(CLFH Pad) function is used by pad option.

CLFH

<9> Thermometer’s other charter is as follows:

32.0󰄊 ~41.9󰄊 90󰄋 ~ 107.9󰄋 Temperature range

Accuracy Resolution

4.3 While TX1125S-3

<1> Power SW: Push switch to power on or power off. <2> when power on:

A. The LCD display 󰁣󰁣󰁣 (or 󰁣󰁣󰁣) about 2 sec. If non-memory function the “M”

will not display.

B. After A, with memory function push switch more than 2 sec, LCD will display the stable-temperature of last measure, and “M” will display.

C. After B, LCD displays 36.5󰄊(97.7󰄋) about 1 sec. D. After C, when it is measuring. The 󰄊 (or 󰄋) will flash at the speed of 1HZ. E. With memory function, the stable-temperature time will be counted after releasing

switch for 8 sec.

Without memory function, the stable-temperature time will be counted after turning on for 8sec. F. If the temperature󰃖 32.0 󰄊(90 󰄋), then display L 󰄊(󰄋). G. If the temperature󰃗 or =44.0 󰄊(112 󰄋), then display H 󰄊(󰄋). H. When measuring, the LCD will always display the highest temperature.

I. If the measured temperature is not changed more than 16 or 32 sec, the measurement is over and the mark 󰄊(󰄋) stops flashing.

J. When measurement is over, if the temperature󰃗 37.5 󰄊(99.5 󰄋), The buzzer alarms \"Bi-Bi-Bi󰄷󰄷Bi-Bi-Bi󰄷󰄷\" for 4 sec, as follows: Bi󰄷󰄷󰄷󰄷󰄷󰄷Bi󰄷󰄷󰄷󰄷󰄷󰄷Bi󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷 0.125S 0.125S 0.125S 0.125S 0.125S 0.375S If the temperature 󰃙 37.5 󰄊(99.5 󰄋), the buzzer alarms \"Bi-Bi-Bi-Bi-\" for 4 sec, as

follows:

Bi󰄷󰄷󰄷󰄷󰄷󰄷 0.5S 0.5S K. It will auto power off when measurement is over than 10 minutes.

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Shenzhen Green China Semiconductor CO.,LTD English specification of product V1.0 Renew Time：5/18/2010

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CONNECTED TO VSS󰄋 NO CONNECT 󰄊 󰃔0.1 󰄊

0.1 󰄊

󰃔0.2 󰄋 0.1 󰄋

TX1125S

L. When measurement is over, if the temperature rises within 10 minutes, then remeasure the temperature, but the 󰄊 (󰄋) mark will not flash again. When remeasurement

is over, the buzzer will not alarm again.

<3> When push switch, buzzer will alarm “Bi” about 0.125 sec. <4> When power off: the stand-by current 󰃙 0.5 uA.

<5> The frequence of the buzzer is 5.3khz.

<6> After <2>-C, if detect low voltage (1.35 󰃔0.05 V), the LCD will only display battery

mark” ” and the measurement maybe not accurate, means thermometer must be changed battery. <7> When sensor circuit detect error, LCD only display ”E”, it will not measure normally until

the error status is cancelled.

<8> When TEST2 pin is floating, the LCD displays the highest value, not the real time value, in order to adjust the reference resistance RF during the process of producing. When connected to VDD, the LCD displays the real time value. <9> Memory (SM Pad) and 󰄊/󰄋(CLFH Pad) function is used by pad option.

CLFH SM

TEMPERATURE RANGE ACCURANCY RESOLUTION

4.4 While TX1125S-4

<1> PSW: Push switch to power on or power off. <2> When power on:

A. The LCD display (When (T_OPT1=NC) or ( When (T_OPT1=0) about 2 sec.

B. After A, show the temperature of the last measured (and “M” When T_OPT1=0) about 2 sec.

C. After B, Show 37.0󰄊 (or98.6 󰄋) about 1 sec.

D. After C, when it is measuring. The 󰄊 (or 󰄋) will flash at the speed of 1 Hz. E. If the temperature 󰃖 32.0 󰄊 (90 󰄋), then display L0 󰄊 (󰄋). F. If the temperature 󰃗or = 42.0 󰄊 (108 󰄋), then display H I󰄊 (󰄋). G. When measuring, the LCD will always display the highest temperature.

H. If the measured temperature is not changed more than 16, the measurement is over and mark 󰄊 (󰄋) stop flashing.

I. When measurement is over, if the temperature 󰃗 37.5 󰄊(99.5 󰄋), the buzzer alarms \"Bi-Bi-Bi󰄷󰄷 Bi-Bi-Bi󰄷󰄷\" for 4 sec, as follows:

Bi󰄷󰄷󰄷󰄷󰄷󰄷Bi󰄷󰄷󰄷󰄷󰄷󰄷Bi󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷󰄷

0.125S 0.125S 0.125S 0.125S 0.125S 0.375S

If the temperature 󰃙 37.5 󰄊(99.5 󰄋), the buzzer alarms \"Bi-Bi-Bi-Bi-\" for 4 sec, as follows:

Bi󰄷󰄷󰄷󰄷󰄷󰄷

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CONNECTED TO VSS 󰄋 NO MEMORY FUNCTION NO CONNECT 󰄊 MEMORY FUNCTION

<10> THERMOMETER’S OTHER CHARTER IS AS FOLLOWS:

32.0󰄊 ~43.9󰄊 90󰄋 ~ 111.9󰄋

󰃔0.1 󰄊

0.1 󰄊

󰃔0.2 󰄋 0.1 󰄋

TX1125S

0.5S 0.5S

J. It will auto power off when measurement is over than 10 minutes.

L. When measurement is over, if the temperature rises within 10 min, the 󰄊 (󰄋) mark will flash again (repeat from the step of< 2>-D).

<3> When push switch, buzzer will alarm \"Bi\" about 0.125 sec. <4> When power off: the stand-by current 󰃙 0.5 uA. <5> The frequence of the buzzer is 5.3khz.

<6> After <2>-C, if detect low voltage(1.35 󰃔0.05 V):

A: When T_OPT1=NC:

The battery mark \" \" flashes at the speed of 1Hz and the measurement maybe not accurate, means thermometer’s battery must be changed.

B: When T_OPT1=0:

The LCD display flashes at the speed of 1Hz and the measurement maybe not accurate, means thermometer’s battery must be changed.

<7> When TEST2 pin is floating, the LCD displays the highest value, not the real time value,

in order to adjust the reference resistance RF during the process of producing. When connected to VDD, the LCD displays the real time value.

<8> 󰄊/󰄋(CLFH Pad) function is used by pad option.

CLFH CONNECTED TO VSS󰄋 NO CONNECT 󰄊

<9> Thermometer’s other charter is as follows:

Temperature range

Accuracy Resolution

32.0󰄊 ~41.9󰄊 90󰄋 ~ 107.9󰄋

󰃔0.1 󰄊

0.1 󰄊

󰃔0.2 󰄋 0.1 󰄋

5. Pin Descriptions

1 2 3 5 6 7 8 9

SC RF RS TEST1 OSCI OSCO BUZ1 BUZ2

Name I/O

I O O I I I O O O O O

Function

Reference and sensor frequency input pad.

The reference & sensor frequency generator consists of pad 1,3,4. PMOS open drain, connected to the reference resistance. PMOS open drain, connected to the sensor.

4 M_OPTION Listed as tables above.

Test pad, for IC internal test only. System frequency input pad. System frequency output pad. Output pad, the buffer of buzzer. Output pad, the buffer of buzzer. LCD backplane drive, 3-level voltage out LCD segment drive

10~12 COM1~COM3 13~15 SA1~SA3

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TX1125S

16~18 SB1~SB3 19~21 SC1~SC3 22 23 24 25 27 28 29

SD1 VA VB VLCD CF_OPTION TEST2 PSW

O O O O O O I I

LCD segment drive LCD segment drive LCD segment drive

Doublers voltage 3V capacitor connects. Doublers voltage 3V capacitor connects. The voltage is 3V. Listed as tables above.

Pull-low test pad, for the test of production. When floating, LCD displays the highest value; When connected to VDD, the LCD displays the real-time value (not the highest value). Pull-low input pad, push switch to power on or power off.

While TX1125S-1, stable time option function with T_OPT2 While TX1125S-2/-4

No connect: No connect: While detecting low voltage, the battery mark will blink at the speed of 1Hz;

Connected to GND: While detecting low voltage, LCD displays will blink at the speed of 1Hz. While TX1125S-3, don’t care.

While TX1125S-1, stable time option function with T_OPT1.

T_OPT1 T_OPT2Stable Time 16s 8s 4s

Floating GND Floating

Floating Floating GND

26 VDD I 1.5V

30 T_OPT1

31 T_OPT2

While TX1125S-2 /-3/-4, don’t care. 32

LOWC

For the low voltage detecting.

While TX1125S-1 &TX1125S-2&TX1125S-4, don’t care.

While TX1125S-3,

Connected to VDD: memory function; Connected to VSS: no memory function. Power supply GND

While TX1125S-1 and CF_OPTION Floating,

No connect: show ℉; Connected to VSS: show ℃. While TX1125S-2/-3/-4

No connect: show ℃; Connected to VSS: show ℉. Listed as tables above. M_OPTIONFloating Floating Floating

Function TX1125S-1TX1125S-2TX1125S-3

33 SM I/O

34 GND I I

35 CLFH

36 F_OPTION I

F_OPTION Floating GND

CF_OPTION Don’t care Floating VDD

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Shenzhen Green China Semiconductor CO.,LTD English specification of product V1.0 Renew Time：5/18/2010

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TX1125S

GND Don’t care GND TX1125S-4

F_OPTION

CF_OPTION

CLFH Floating Floating Opts ℃ or ℉ by Opts ℃ or ℉ by CLFH GND Don’t care

6. Pad Diagram

Chip Size: ( 1160μm *1220μm )

Note: The substrate must be connected to VSS or floating PAD LOCATION PROJECT: TX1125S

TOPCELL: TX1125S PROCESS: CSMC0.5

DATE:

2008/09/04

NO. PADNAME X Y NO. PADNAME X Y 1 SC -283 510 19 SC1 284 -535 2 RF -395 510 20 SC2 395 -535 3 RS -505 510 21 SC3 505 -535 4 CHG -505 380 5 TEST1 -505 270 6 OSCI -505 160 7 OSCO -505 50 8 BUZ1 -462 -75 9 BUZ2 -462 -192 10 COM1 -505 -309 11 COM2 -505 -422 12 COM3 -505 -535 22 SD1 505 -410 23 VA 484 -257 24 VB 488 -130 25 VLCD 488 -20 26 VDD 505 95 27 CF_OPTION 505 205 28 TEST2 505 315 29 PSW 505 425 30 T_OPT1 505 535 -------------------------------------------------------------------------------------------------------------------------------------------------------------------- Shenzhen Green China Semiconductor CO.,LTD English specification of product V1.0 Renew Time：5/18/2010

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TX1125S

13 SA1 -376 -535 14

SA2

-266

-535

31 T_OPT2 380 535 32

LOWC

270

535

15 SA3 -156 -535 16

SB1

-46

-535

33 SM 160 535 34

GND

535

17 SB2 65 -535 18 SB3 175 -535 35 CLFH -60 535 36 F_OPTION -170 535

7. Application Circuit

7.1 Application 1(TX1125S-1)

1). Option ℃ or ℉ measurement by bonding option CLFH(℃ bond to GND & ℉ floating)

Note: The value of R1, R2, C1 C2 is allowed the tolerance of ±5%.

The value of RF=30kΩ,which is allowed the tolerance E of ±1%. The RS is Sensor ( 503ET).

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TX1125S

7.2 Application 2(TX1125S-2)

Note: The value of R1, R2, C1 C2 is allowed the tolerance of ±5%.

The value of RF=30kΩ,which is allowed the tolerance E of ±1%. The RS is Sensor ( 503ET).

7.3 Application 2(TX1125S-3)

Note: The value of R1, R2, C1 C2 is allowed the tolerance of ±5%.

The value of RF=30kΩ,which is allowed the tolerance E of ±1%. The RS is Sensor ( 503ET).

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TX1125S

7.4 Application 2(TX1125S-4)

8. LCD Electrode Pattern

Note: The value of R1, R2, C1 C2 is allowed the tolerance of ±5%.

The value of RF=30kΩ,which is allowed the tolerance E of ±1%. The RS is Sensor ( 503ET).

8.1 TX1125S-2/-4，T_OPT1 Pad: no connect (LCD-1)

󰀁

LCD SPEC:

A. 1/3 DUTY, 1/2 BIAS. (LCD USES 3V)

B. VTN=1.5V

1 2 3 4 5 6 7 8 9 10 11 12 13 COM1 COM1 COM3

F1 A1 B1 F2 A2 B2 F3 A3 B3 A4

D2 H2 I3 D3 H3 C4 COM2 COM2 E1 G1 C1 E2 G2 C2 E3 G3 C3 B4 COM3 H1 D1

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TX1125S

󰀁8.2 TX1125S-2/-4, T_OPT1 Pad: connected to VSS (LCD-2)

󰀁

LCD SPEC:

A. 1/3 DUTY, 1/2 BIAS. (LCD USES 3V)

B. VTN=1.5V

1 2 3 4 5 6 7 8 9 10 11 12 13

F1 A1 B1 F2 A2 B2 F3 A3 B3 A4 E1 G1 C1 E2 G2 C2 E3 G3 C3 B4

D2 H2 I3 D3 H3 C4 COM2

COM1 COM1 COM2 COM3

COM3 H1 D1

8.3 TX1125S-1/-3

LCD SPEC:

A. 1/3 DUTY, 1/2 BIAS. (LCD USES 3V) B. VTN=1.5V

1 2 3 4 5 6 7 8 9 10 11 12 13 COM1 COM1 COM2 COM2COM3

F1 A1 B1 F2 A2 B2 F3 A3 B3 A4

D2 H2 I3 D3 H3 C4 E1 G1 C1 E2 G2 C2 E3 G3 C3 B4 COM3 H1 D1

9. Absolute Maximum Ratings

(All voltage referenced to GND)

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TX1125S

Item

Supply Voltage Input / Output Voltage Operating Temperature Storage Temperature

Symbol

VI/VO TDD TST

Rating

GND-0.3 ~ VDD+0.3

0 ~ +75 -55 ~ +125

Unit

V ℃ ℃

VDD 0~1.65 V Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute

Maximum Ratings” may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

10. Electrical Characteristic

(All voltage referenced to GND, Ambient temperature=25℃, VDD=1.5V)

Parameters

Operating Voltage Operating Average Current Stand-by Current Oscillation Frequency Input Voltage Output Voltage Buzzer Driving Current Buzzer Sinking Current

Symb

IDD ISTB FOSC VIL VIH VOL VOH IDRIVE ISINK

Condition Min. Typ. Max. Unit

VDD 1.3 1.5 1.65 V VDD=1.5V unload

µA

VDD=1.65V 0 -- 0.5 µA

VSS-0.3V

VSS-0.1V

VDD+0.3V V VDD+0.1V V V ROSC=1M 31 33 35 KHz VDD=1.5V 4.5 mA VDD=1.5V 10 mA

11. Editions

Editions

V1.0 New Edition V1.01

Delete the function: Can switch ℃/℉ by the key-press.

Expression

Date 2008-11-17 2009-12-16

12. Notices

1. The information contained herein could be changed without notice owing to product and /or technical improvements. Please make sure before using the product that the information you are referring to is up-to-date.

2. No responsibility is assumed by us for any consequence resulting from any wrong or improper

operation, etc.of the product.

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Shenzhen Green China Semiconductor CO.,LTD English specification of product V1.0 Renew Time：5/18/2010

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