TCN75AVOA Microchip Technology, TCN75AVOA Datasheet
TCN75AVOA
Specifications of TCN75AVOA
Available stocks
Related parts for TCN75AVOA
TCN75AVOA Summary of contents
Page 1
... TCN75A 2010 Microchip Technology Inc. Description: Microchip Technology Inc.’s TCN75A digital tempera- ture sensor converts temperatures between -40°C and +125° digital word, with ±1°C (typical) accuracy. The TCN75A product comes with user-programmable registers that provide flexibility for temperature-sensing applications. user-selectable, 0.5° ...
Page 2
... TCN75A NOTES: DS21935D-page 2 2010 Microchip Technology Inc. ...
Page 3
... High-level Current Low-level Voltage Thermal Response Response Time 2010 Microchip Technology Inc. †Notice: Stresses above those listed under “Maximum ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied ...
Page 4
... Typ Max T -40 — +125 A T -40 — +125 A T -65 — +150 A — 163 — JA — 206 — exceed Maximum Junction Temperature (+150°C). J Conditions = 0.6V OUTPUT Units Conditions °C Note 1 °C °C °C/W °C/W 2010 Microchip Technology Inc. ...
Page 5
... Start Condition Hold Time t H-START Stop Condition Setup Time t SU-STOP Bus Idle t B-FREE Specification limits are characterized but not product tested. Note 1: Timing Diagram Start Condition 2010 Microchip Technology Inc. (Note 1) = 2.7V to 5.5V, GND = Ground Min Typ Max Units 0 — 400 kHz SC 2 ...
Page 6
... TCN75A NOTES: DS21935D-page 6 2010 Microchip Technology Inc. ...
Page 7
... Resolution 2.0 0.125°C 1.0 0.0625°C 0.0 -1.0 0.5°C -2.0 0.25°C -3.0 -55 -35 - (°C) A FIGURE 2-3: Average Temperature Accuracy vs. Ambient Temperature, V 2010 Microchip Technology Inc. 100 3. 90 80% 70% 60% 50% 40% 30% 20% 10 105 125 FIGURE 2-4: = 3.3V. Histogram ...
Page 8
... V vs. Ambient Temperature. OL DS21935D-page 8 145 Average of 10 samples per package 125 = 5.5V DD 105 = 3. 2. 105 125 -2 vs. FIGURE 2-9: OL vs. Time 105 125 SOIC MSOP 27°C (Air) to 125°C (Oil bath Time (s) TCN75A Thermal Response 2010 Microchip Technology Inc. ...
Page 9
... V is the power pin. The operating voltage specified in the DC electrical specification table, is applied on this pin. 3.4 Ground (GND) GND is the system ground pin. 2010 Microchip Technology Inc. Table 3-1. Function Bidirectional Serial Data Serial Clock Input Temperature Alert Output Ground ...
Page 10
... TCN75A NOTES: DS21935D-page 10 2010 Microchip Technology Inc. ...
Page 11
... During normal data transfers, SDA only changes state while SCL is low. 2010 Microchip Technology Inc. 4.1.1 DATA TRANSFER Data transfers are initiated by a Start condition (Start), followed by a 7-bit device address and a read/write bit. ...
Page 12
... ACK bit (NAK) once the last bit has been clocked out of the slave. In this case, the slave will leave the data line released to enable the master to generate the Stop condition. 1)”. 2010 Microchip Technology Inc. ...
Page 13
... I C™ Pointer Interface FIGURE 5-1: Functional Block Diagram. 2010 Microchip Technology Inc. 5.1 Temperature Sensor The TCN75A uses the difference in the base-emitter voltage of a transistor while its collector current is changed from IC depends only on the ratio of the two currents and the ...
Page 14
... Register Temperature Register T HYST Register T SET Register FIGURE 5-2: U-0 U-0 U Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared ) A ) HYST ) SET ALERT Output ALERT Output Control Logic Register Block Diagram. R/W-0 R/W bit Bit is unknown 2010 Microchip Technology Inc. ...
Page 15
... Sensor Configuration Register (CONFIG LSB One-Shot Temperature Hysteresis Register (T HYST MSB Sign 2 °C -1 LSB 2 °C 0 Temperature Limit-Set Register (T ) SET MSB Sign 2 °C -1 LSB 2 °C 0 2010 Microchip Technology Inc. Bit Assignment °C 2 °C 2 ° °C 2 °C 0 Resolution Fault Queue ) °C 2 °C 2 ° ...
Page 16
... R-0 R-0 -4 °C 2 ° Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared 4 – Code Ambient Temperature (°C) A >b 0000 0000 R-0 R-0 R °C 2 °C 2 °C bit 8 R-0 R-0 R bit Bit is unknown 2010 Microchip Technology Inc. ...
Page 17
... SCL SDA Address Byte TCN75A SCL A A SDA Address Byte FIGURE 5-3: Timing Diagram for Reading +25.25°C Temperature from the T Section 4.0 “Serial Communication”). 2010 Microchip Technology Inc Pointer A TCN75A MSB Data Master TCN75A TCN75A It is not necessary to ...
Page 18
... Comparator mode (Power-up default) bit 0 SHUTDOWN bit 1 = Enable 0 = Disable (Power-up default) DS21935D-page 18 R/W-0 R/W-0 R/W-0 Fault Queue ALERT Polarity U = Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared >b 0000 0001 R/W-0 R/W-0 COMP/INT Shutdown bit Bit is unknown 2010 Microchip Technology Inc. ...
Page 19
... Reading the CONFIG Register SCL SDA Address Byte SCL A A SDA Address Byte FIGURE 5-4: Timing Diagram for Writing and Reading from the Configuration Register (See Section 4.0 “Serial Communication”). 2010 Microchip Technology Inc CONFIG Pointer TCN75A TCN75A ...
Page 20
... Bit is set DS21935D-page 20 (refer to ) — ADDRESS < HYST R/W-0 R/W-1 R/W °C 2 °C 2 °C R-0 R-0 R Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared >b 0000 0010 R/W-1 R/W °C 2 °C bit 8 R-0 R bit Bit is unknown 2010 Microchip Technology Inc. ...
Page 21
... Reading the T Register. HYST SCL SDA Address Byte SCL A A SDA Address Byte FIGURE 5-5: Timing Diagram for Writing and Reading from the Temperature Hysteresis Register (See Section 4.0 “Serial Communication”). 2010 Microchip Technology Inc Pointer HYST TCN75A TCN75A ...
Page 22
... Bit is set DS21935D-page 22 register is SET ) — ADDRESS < SET R/W-1 R/W °C 2 °C R-0 R Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared >b 0000 0011 R/W-0 R/W-0 R/W °C 2 °C 2 °C bit 8 R-0 R-0 R bit Bit is unknown 2010 Microchip Technology Inc. ...
Page 23
... A A SDA Address Byte SCL A A SDA Address Byte FIGURE 5-6: Timing Diagram for Writing and Reading from the Temperature Limit-set Register (See Section 4.0 “Serial Communication”). 2010 Microchip Technology Inc. < 0101 1010 0000 0000 Pointer SET TCN75A TCN75A 1 2 ...
Page 24
... Interrupt mode Active-low Register Read * See Section 5.3.4.5 “Interrupt Mode” Figure 5-7 gives a graphical . The pin remains active SET . The Comparator mode is HYST below T , for the A HYST . However, the output is deas- SET drifts below T , the A HYST * 2010 Microchip Technology Inc. ...
Page 25
... Microchip Technology Inc. 5.4 Summary of Power-up Condition The TCN75A has an internal Power-on Reset (POR) circuit. If the power supply voltage V to the 1.7V (typical) threshold, the device resets the registers to the power-up default settings. Table 5-4 shows the power-up default summary ...
Page 26
... TCN75A NOTES: DS21935D-page 26 2010 Microchip Technology Inc. ...
Page 27
... Temperature Sensor FIGURE 6-2: Multiple Devices on I Bus. 2010 Microchip Technology Inc. The ALERT output can be wire-ORed with a number of other open-drain devices. In such applications, the output needs to be programmed as an active-low output. Most systems will require pull-up resistors for this configuration. ...
Page 28
... TCN75A NOTES: DS21935D-page 28 2010 Microchip Technology Inc. ...
Page 29
... In the event the full Microchip part number cannot be marked on one line, it will Note: be carried over to the next line, thus limiting the number of available characters for customer-specific information. 2010 Microchip Technology Inc. TCN75A Example: N75A/E 018256 ...
Page 30
... TCN75A /HDG 3ODVWLF 0LFUR 6PDOO 2XWOLQH 3DFNDJH 8$ >0623@ 1RWH NOTE 1RWHV DS21935D-page φ L 2010 Microchip Technology Inc. ...
Page 31
... Plastic Micro Small Outline Package (UA) [MSOP] Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 2010 Microchip Technology Inc. TCN75A DS21935D-page 31 ...
Page 32
... TCN75A Note: DS21935D-page 32 2010 Microchip Technology Inc. ...
Page 33
... Note: 2010 Microchip Technology Inc. TCN75A DS21935D-page 33 ...
Page 34
... TCN75A /HDG 3ODVWLF 6PDOO 2XWOLQH 2$ ± 1DUURZ PP %RG\ >62,&@ 1RWH DS21935D-page 34 2010 Microchip Technology Inc. ...
Page 35
... Added disclaimers to package outline drawings. 5. Updated the package marking information for pb-free markings. Revision B (May 2006) The following is the list of modifications: 1. Revised Product ID System; Added OA713 and UA713 packages. Revision A (November 2007) • Original Release of this Document. 2010 Microchip Technology Inc. TCN75A DS21935D-page 35 ...
Page 36
... TCN75A NOTES: DS21935D-page 36 2010 Microchip Technology Inc. ...
Page 37
... Plastic Micro Small Outline (MSOP), 8-lead UA713 = Plastic Micro Small Outline (MSOP), 8-lead Tape and Reel 2010 Microchip Technology Inc. TCN75A . Examples: a) TCN75AVOA: 8LD SOIC package. b) TCN75AVOA713: Tape and Reel, 8LD SOIC package. a) TCN75AVUA: 8LD MSOP package. b) TCN75AVUA713: Tape and Reel, 8LD MSOP package. DS21935D-page 37 ...
Page 38
... TCN75A NOTES: DS21935D-page 38 2010 Microchip Technology Inc. ...
Page 39
... PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...
Page 40
... Philippines - Manila Tel: 63-2-634-9065 Fax: 63-2-634-9069 Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Hsin Chu Tel: 886-3-6578-300 Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-213-7830 Fax: 886-7-330-9305 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 2010 Microchip Technology Inc. 08/04/10 ...