TCN75-5.0MOA Microchip Technology, TCN75-5.0MOA Datasheet
TCN75-5.0MOA
Specifications of TCN75-5.0MOA
158-1010
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TCN75-5.0MOA Summary of contents
Page 1
... Shutdown) modes and the specification of both temperature alert output and hysteresis limits. When the temperature changes beyond the specified limits, the TCN75A outputs an alert signal. The user has the option of setting the alert output signal polarity as an active-low or active-high comparator output for thermo- stat operation temperature event interrupt output for microprocessor-based systems ...
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... TCN75A 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † V ....................................................................... 6.0V DD Voltage at all Input/Output pins .... GND – 0.3V to 5.5V Storage temperature ..........................-65°C to +150°C Ambient temp. with power applied .....-55°C to +125°C Junction Temperature (T ).................................. 150°C J ESD protection on all pins (HBM:MM)....... (4 kV:400V) Latch-up current at each pin ......................... ±200 mA ...
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... GND = Ground. DD Sym Min Typ Max T -40 — +125 A T -40 — +125 A T -65 — +150 A — 163 — JA — 206 — exceed Maximum Junction Temperature (+150°C). J TCN75A Conditions = 0.6V OUTPUT Units Conditions °C Note 1 °C °C °C/W °C/W DS21935A-page 3 ...
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... TCN75A SERIAL INTERFACE TIMING SPECIFICATIONS Electrical Specifications: Unless otherwise indicated and all limits measured to 50% point. L Parameters Sym 2 2-Wire I C™ Compatible Interface Serial Port Frequency f Clock Period t Low Clock t LOW High Clock t HIGH Rise Time Fall Time Data Setup Before SCLK High ...
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... FIGURE 2-5: Temperature 3.3V DD 160 Samples 0.8 0.6 0.4 0 105 125 -55 -35 -15 FIGURE 2-6: = 3.3V. Ambient Temperature. DD TCN75A = +25°C 5 lots 32 Samples/lot = 3.3V 160 Samples Temperature Accuracy (°C) Temperature Accuracy = +25° 105 125 T (° ...
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... V vs. Ambient Temperature. OL DS21935A-page 6 145 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 © 2005 Microchip Technology Inc. ...
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... Address Select Pin (bit 1) Address Select Pin (bit 0) Power Supply Input 3.5 ALERT Output The TCN75A’s ALERT pin is an open-drain output. The device outputs an alert signal when the ambient temperature goes beyond the user-programmed temperature limit. 3.6 Address Pins (A2, A1, A0) A2, A1 and A0 are device or slave address input pins ...
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... Interface FIGURE 4-1: Functional Block Diagram. DS21935A-page 8 4.1 Temperature Sensor The TCN75A uses the difference in the base-emitter voltage of a transistor while its collector current is Analog-to-Digital changed from IC depends only on the ratio of the two currents and the ambient temperature, as shown in Equation 4-1. ...
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... Register FIGURE 4-2: The registers are accessed by sending register pointers to the TCN75A using the serial interface. This is an 8-bit pointer. However, the two Least Significant bits (LSbs) are used as pointers and all other bits need to be cleared <0>. This device has additional registers that are reserved for test and calibration ...
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... Note 1: ‘u’ represents unused bits. The TCN75A clears <0> the unused bits. 2: This data is in two’s complement format, which indicates ambient temperature below 0°C. 3: Negative temperature magnitude in hexadecimal. This conversion is accomplished by complimenting each binary bit and adding 1 ...
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... SET two’s compliment format. This data represents a maxi- mum temperature limit. If the ambient temperature exceeds this specified limit, the TCN75A asserts an alert output. (Refer to Section 4.3.4.3 “ALERT Output Configuration”). This register uses the nine Most Significant bits (MSbs) and all other bits are don’ ...
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... TCN75A 4.3.3 TEMPERATURE HYSTERESIS REGISTER (T ) HYST The TCN75A has a 16-bit read/write Temperature Hysteresis register that contains a 9-bit data in two’s compliment format. This register is used to set a hysteresis for the T limit. Therefore, the data SET represents a minimum temperature limit. If the ambient temperature drifts below the specified limit, the ...
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... SENSOR CONFIGURATION REGISTER (CONFIG) The TCN75A has an 8-bit read/write Configuration register that allows the user to select the different features. These features include shutdown, ALERT output select as comparator or interrupt output, ALERT output polarity, fault queue cycle, temperature mea- surement resolution and One-shot mode (single con- version while in shutdown) ...
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... One-Shot Mode The TCN75A can also be used in a One-shot mode that can be selected using bit 7 of the CONFIG register. The One-shot mode performs a single temperature measurement and returns to Shutdown mode. This ...
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... T HYST A T SET T HYST Pointer CONFIG At power-up, the TCN75A has an inherent 2 ms (typ.) power-up delay before updating the registers with default values and start a conversion cycle. This delay reduces register corruption due to unsettled power. After power-up, it takes t update the (typ.) CONV ...
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... TCN75A releases the bus. 5.1.4 ADDRESS BYTE Following the START condition, the host must transmit the address byte to the TCN75A. The address for the TCN75A is <1001,A2,A1,A0> in binary, where the A0, A1 and A2 bits are set externally by connecting the corresponding pins to V <1> or GND <0>. The 7-bit ...
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... Graphical Representation of the TCN75A Serial Protocols Read 1-byte Data SCLK SDA Address Byte SCLK SDA S Read 2-byte Data SCLK SDA Address Byte SCLK A A SDA Address Byte S = START Condition P = STOP Condition FIGURE 5-2: Read 1-byte and 2-byte data from a register. ...
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... Address Byte Write 2-byte Data SCLK SDA Address Byte S = START Condition P = STOP Condition FIGURE 5-3: Write 1-byte and 2-byte data from a register. DS21935A-page Pointer TCN75A TCN75A Pointer TCN75A MSB Data TCN75A Data TCN75A TCN75A LSB Data TCN75A © 2005 Microchip Technology Inc. ...
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... User can continue to receive 1-byte data indefinitely from a previously set register pointer START Condition P = STOP Condition FIGURE 5-4: Receive 1-byte data from previously set pointer. © 2005 Microchip Technology Inc Pointer TCN75A Address Byte TCN75A Address Byte TCN75A TCN75A TCN75A Data Master Data Master DS21935A-page 19 ...
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... User can continue to receive 2-byte data indefinitely from a previously set register pointer START Condition P = STOP Condition FIGURE 5-5: Receive 2-byte data from previously set pointer. DS21935A-page Pointer TCN75A MSB Data Master TCN75A MSB Data Master TCN75A TCN75A LSB Data Master LSB Data Master © 2005 Microchip Technology Inc. ...
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... FIGURE 6-1: Pull-up Resistors On Serial Interface. The TCN75A is designed to meet 0.4V (max.) voltage drop current. This allows the TCN75A to drive lower values of pull-up resistors and higher bus capacitance. In this application, all devices on the bus must meet the same pull-down current requirements. ...
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... Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. DS21935A-page 22 Example: N75A/E 542256 Example: TCN75A VOA0542 256 ) e 3 © 2005 Microchip Technology Inc. ...
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... L .016 .024 .031 F .037 REF 0° - 8° c .003 .006 .009 B .009 .012 .016 5° - 15° 5° - 15° TCN75A A2 MILLIMETERS* MIN NOM MAX 8 0.65 BSC - - 1.10 0.75 0.85 0.95 0.00 - 0.15 4.90 BSC 3.00 BSC 3.00 BSC 0.40 0.60 0.80 0.95 REF 0° ...
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... TCN75A 8-Lead Plastic Small Outline (OA) – Narrow, 150 mil Body (SOIC Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Chamfer Distance Foot Length Foot Angle Lead Thickness Lead Width Mold Draft Angle Top ...
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... APPENDIX A: REVISION HISTORY Revision A (January 2005) • Original release of this document. © 2005 Microchip Technology Inc. TCN75A DS21935A-page 25 ...
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... TCN75A NOTES: DS21935A-page 26 © 2005 Microchip Technology Inc. ...
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... Device Temperature Package Range Device: TCN75A: Temperature Sensor Temperature +125 C Range: Package Plastic SOIC, (150 mil Body), 8-lead UA = Plastic Micro Small Outline (MSOP), 8-lead © 2005 Microchip Technology Inc. TCN75A . Examples: a) TCN75AVOA 8LD SOIC package. b) TCN75AVUA 8LD MSOP package. DS21935A-page 27 ...
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... TCN75A NOTES: DS21935A-page 28 © 2005 Microchip Technology Inc. ...
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... PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel and Total Endurance 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. ...
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... Fax: 65-6334-8850 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Taiwan - Hsinchu Tel: 886-3-572-9526 Fax: 886-3-572-6459 © 2005 Microchip Technology Inc. EUROPE Austria - Weis Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Ballerup Tel: 45-4450-2828 Fax: 45-4485-2829 France - Massy Tel: 33-1-69-53-63-20 ...