M TC77 Thermal Sensor with SPI™ Interface Features Description • Digital Temperature Sensing in 5-Pin SOT-23A and 8-Pin SOIC Packages • Outputs Temperature as a 13-Bit Digital Word • SPI and MICROWIRE™ Compatible Interface • Solid State Temperature Sensing • ±1°C (max.) accuracy from +25°C to +65°C • ±2°C (max.) accuracy from -40°C to +85°C • ±3°C (max.) accuracy from -55°C to +125°C • 2.7V to 5.5V Operating Range • Low Power - 250 µA (typ.) Continuous Conversion Mode - 0.1 µA (typ.) Shutdown Mode The TC77 is a serially accessible digital temperature sensor particularly suited for low cost and small formfactor applications. Temperature data is converted from the internal thermal sensing element and made available at anytime as a 13-bit two’s compliment digital word. Communication with the TC77 is accomplished via a SPI and MICROWIRE compatible interface. It has a 12-bit plus sign temperature resolution of 0.0625°C per Least Significant Bit (LSb). The TC77 offers a temperature accuracy of ±1.0°C (max.) over the temperature range of +25°C to +65°C. When operating, the TC77 consumes only 250 µA (typ.). The TC77’s Configuration register can be used to activate the low power Shutdown mode, which has a current consumption of only 0.1 µA (typ.). Small size, low cost and ease of use make the TC77 an ideal choice for implementing thermal management in a variety of systems. Typical Applications • Thermal Protection for Hard Disk Drives and Other PC Peripherals • PC Card Devices for Notebook Computers • Low Cost Thermostat Controls • Industrial Control • Office Equipment • Cellular Phones • Thermistor Replacement Package Types SOT-23-5 CS VSS SOIC VDD 1 TC77 SCK SI/O SCK NC SI/O VDD 1 TC77 VSS CS NC NC Block Diagram Typical Application VDD VDD Internal Diode Temperature Sensor 13-Bit Sigma Delta A/D Converter TC77 VDD TC77 Manufacturer ID Register Serial Port Interface Temperature Register VSS 0.1µF Configuration Register 2002 Microchip Technology Inc. PICmicro® MCU CS CS AN0 SI/O SCK SCK SI/O SDI SCK VSS DS20092A-page 1 TC77 1.0 1.1 ELECTRICAL CHARACTERISTICS PIN FUNCTION TABLE Name Absolute Maximum Ratings † VDD ........................................................................6.0V All inputs and outputs w.r.t. VSS ..... -0.3V to VDD +0.3V Storage temperature .......................... -65°C to +150°C Ambient temp. with power applied ..... -55°C to +125°C Junction Temperature......................................... 150°C Function SI/O Serial Data Pin SCK Serial Clock VSS Ground CS Chip Select (Active-Low) NC No Connection VDD Power Supply ESD protection on all pins: Human Body Model (HBM).............................. >4 kV Machine Model (MM) ......................................>200V † 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 operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. DC CHARACTERISTICS Electrical Specifications: Unless otherwise noted, all parameters apply at VDD = 2.7V to 5.5V and TA = -55°C to +125°C. Parameters Sym Min Typ Max Units Conditions Operating Voltage Range VDD 2.7 — 5.5 V Note 1 Operating Current IDD — 250 400 µA Continuous Temperature Conversion Mode VPOR 1.2 1.6 2.2 V VDD falling or rising edge IDD- — 0.1 1.0 µA Shutdown Mode — 13 — Bits ADC LSb = 0.0625°C/bit (Note 4) tCT — 300 400 ms TERR -1.0 -2.0 -3.0 — — — +1.0 +2.0 +3.0 °C Power Supply Power-On Reset Threshold Standby Supply Current STANDBY Temperature to Bits Converter Resolution Temperature Conversion Time Temperature Accuracy (Note 1) +25°C < TA < +65°C -40°C < TA < +85°C -55°C < TA < +125°C TC77-3.3MXX: VDD = 3.3V TC77-5.0MXX: VDD = 5.0V Note 1: The TC77-3.3MXX and TC77-5.0MXX will operate from a supply voltage of 2.7V to 5.5V. However, the temperature accuracy of the TC77-3.3MXX and TC77-5.0MXX is specified at the nominal operating voltages of 3.3V and 5.0V, respectively. As V DD varies from the nominal operating value, the accuracy may be degraded (Refer to Figures 2-6 and 2-7). 2: All time measurements are measured with respect to the 50% point of the signal. 3: Load Capacitance, C L = 80 pF, is used for AC timing measurements of output signals. 4: Resolution = Temperature Range/No. of Bits = (+255°C – -256°C) / (213) Resolution = 512/8192 = 0.0625°C/Bit DS20092A-page 2 2002 Microchip Technology Inc. TC77 DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise noted, all parameters apply at VDD = 2.7V to 5.5V and TA = -55°C to +125°C. Parameters Sym Min Typ Max Units Conditions High Level Input Voltage VIH 0.7 VDD — VDD + 0.3 V Low Level Input Voltage VIL -0.3 — 0.3 VDD V High Level Output Voltage VOH 2.4 — — V IOH = -400 µA Low Level Output Voltage VOL — — 0.4 V IOL = +2 mA Input Current IIN(0), IIN(1) -1.0 -1.0 — — +1.0 +1.0 µA VIN = GND VIN = VDD 0.35 0.8 — V SI/O, SCK CIN, COUT — 20 — pF IO_LEAK -1.0 — — — — +1.0 µA fCLK DC — 7.0 MHz CS Fall to First Rising SCK Edge tCS-SCK 100 — — ns CS Low to Data Out Delay tCS-SI/O — — 70 ns SCK Fall to Data Out Delay tDO — — 100 ns CS High to Data Out Tri-state tDIS — — 200 ns SCK High to Data In Hold Time tHD 50 — — ns Data In Set-up Time tSU 30 — — ns Thermal Resistance, SOT23-5 θJA — 230 — °C/W Thermal Resistance, 8L-SOIC θJA — 163 — °C/W Digital Input/Output Input Hysteresis Pin Capacitance Tri-state Output Leakage Current VO = GND VO = V DD Serial Port AC Timing (Notes 2, 3) Clock Frequency Thermal Package Resistance Note 1: The TC77-3.3MXX and TC77-5.0MXX will operate from a supply voltage of 2.7V to 5.5V. However, the temperature accuracy of the TC77-3.3MXX and TC77-5.0MXX is specified at the nominal operating voltages of 3.3V and 5.0V, respectively. As V DD varies from the nominal operating value, the accuracy may be degraded (Refer to Figures 2-6 and 2-7). 2: All time measurements are measured with respect to the 50% point of the signal. 3: Load Capacitance, C L = 80 pF, is used for AC timing measurements of output signals. 4: Resolution = Temperature Range/No. of Bits = (+255°C – -256°C) / (213) Resolution = 512/8192 = 0.0625°C/Bit 2002 Microchip Technology Inc. DS20092A-page 3 TC77 Data Output Timing CS tCS-SCK 1/fCLK SCK tCS-SI/O SI/O HI-Z tDO tDIS LSb MSb HI-Z SI/O Data Input Set-up and Hold Timing (Data is clocked on the rising edge of SCK) CS CS SCK SCK tHD tSU SI/O FIGURE 1-1: DS20092A-page 4 tHD HI-Z SI/O tSU HI-Z Timing Diagrams. 2002 Microchip Technology Inc. TC77 2.0 TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. 3.5 3 2.5 2 1.5 1 0.5 0 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 0.3 Upper Specification Limit Shutdown Current (µA) Temperature Error (°C) Note: Unless otherwise indicated, all parameters apply at V DD = 3.3V for the TC77-3.3MXX and VDD = 5.0V for the TC775.0MXX, and TA = -55°C to +125°C. The TC77-3.3MXX and TC77-5.0MXX will operate from a supply voltage of 2.7V to 5.5V. However, the temperature accuracy of the TC77-3.3MXX and TC77-5.0MXX is specified at the nominal operating voltages of 3.3V and 5.0V, respectively. Mean Mean + 3V Mean - 3V Lower Specification Limit -55 -35 -15 5 25 45 65 0.2 0.1 0.0 85 -55 105 125 -25 Reference Temperature (°C) FIGURE 2-1: (TC77-XXMXX). Accuracy vs. Temperature 230 220 TA = -55°C 210 TA = +125°C 2.7 3.1 3.5 3.9 4.3 4.7 5.1 FIGURE 2-4: Temperature. Power-On Reset Voltage (V) Supply Current (µA) TA = +25°C 200 1.5 1.0 0.5 0.0 -25 5 35 65 95 125 FIGURE 2-5: Power-On Reset Voltage vs. Temperature (TC77-XXMXX). Temperature Change (°C) Supply Current (µA) TC77-5.0MXX VDD = 5.0 V 250 TC77-3.3MXX VDD = 3.3 V 100 125 2.0 0.4 150 95 Temperature (°C) 400 200 65 2.5 -55 5.5 FIGURE 2-2: Supply Current vs. Supply Voltage (TC77-XXMXX). 300 35 Shutdown Current vs. Supply Voltage (V) 350 5 Temperature (°C) 250 240 TC77-5.0MXX VDD = 5.0 V TC77-3.3MXX VDD = 3.3 V 50 0 TC77-3.3MXX 0.3 0.2 0.1 TA = +85°C TA = +25°C 0 -0.1 TA = -25°C -0.2 -0.3 -0.4 -55 -25 5 35 65 95 Temperature (°C) FIGURE 2-3: Temperature. Supply Current vs. 2002 Microchip Technology Inc. 125 3 3.1 3.2 3.3 3.4 3.5 3.6 Supply Voltage (V) FIGURE 2-6: Temperature Accuracy vs. Supply Voltage (TC77-3.3MXX). DS20092A-page 5 Temperature Change (°C) 0.4 Percentage of Occurances (%) TC77 TC77-5.0MXX 0.3 0.2 TA = +25°C 0.1 0 TA = +85°C -0.1 TA = -25°C -0.2 -0.3 -0.4 4.5 4.6 4.7 4.8 4.9 5 50 Sample Size = 108 TA = +25°C 45 40 35 30 25 20 15 10 5 0 -1 5.1 5.2 5.3 5.4 5.5 -0.75 -0.5 Supply Voltage (V) Sample Size = 108 TA = -55°C 30 25 20 15 10 5 0 -3 -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 3 50 45 40 30 25 20 15 10 5 0 -1.5 -1 -0.5 0 0.5 1 1.5 2 Temperature Error (°C) FIGURE 2-9: Histogram of Temperature Accuracy at -40 Degrees C (TC77-XXMXX). DS20092A-page 6 0.75 1 35 30 25 20 15 10 5 0 -1 -0.75 -0.5 -0.25 0 0.25 0.5 0.75 1 FIGURE 2-11: Histogram of Temperature Accuracy at +65 Degrees C (TC77-XXMXX). Percentage of Occurances (%) Percentage of Occurances (%) Sample Size = 108 TA = -40°C -2 0.5 Temperature Error (°C) FIGURE 2-8: Histogram of Temperature Accuracy at -55 Degrees C (TC77-XXMXX). 35 0.25 Sample Size = 108 TA = +65°C Temperature Error (°C) 40 0 FIGURE 2-10: Histogram of Temperature Accuracy at +25 Degrees C (TC77-XXMXX). Percentage of Occurances (%) Percentage of Occurances (%) FIGURE 2-7: Temperature Accuracy vs. Supply Voltage (TC77-5.0MXX). 35 -0.25 Temperature Error (°C) 90 80 Sample Size = 108 TA = +85°C 70 60 50 40 30 20 10 0 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 Temperature Error (°C) FIGURE 2-12: Histogram of Temperature Accuracy at +85 Degrees C (TC77-XXMXX). 2002 Microchip Technology Inc. Percentage of Occurances (%) TC77 60 50 Sample Size = 108 TA = +125°C 40 30 20 10 0 -3 -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 3 Temperature Error (°C) FIGURE 2-13: Histogram of Temperature Accuracy at +125 Degrees C (TC77-XXMXX). 2002 Microchip Technology Inc. DS20092A-page 7 TC77 3.0 FUNCTIONAL DESCRIPTION The TC77 consists of a band-gap type temperature sensor, a 12-bit plus sign (13-bit) Sigma-Delta Analogto-Digital Converter (ADC), an internal conversion oscillator (~30 kHz) and a serial input/output port. These devices feature a three-wire serial interface that is fully compatible with SPI and MICROWIRE specifications and, therefore, allows simple communications with common microcontrollers and processors. The Shutdown mode can be used to reduce supply current for power sensitive applications. A Manufacturer’s ID register identifies the TC77 as a Microchip Technology product. Output Code 0+0111 1101 0000 +25°C +0.0625°C 0+0001 1001 0000 0+0000 0000 0001 Temp 0°C 0+0000 0000 0000 Temp 1+1111 1111 1111 -55°C +125°C 1+1110 0111 0000 -0.0625°C -25°C 1+1100 1001 0000 FIGURE 3-1: DS20092A-page 8 Temperature To Digital Transfer Function (Non-linear Scale). 2002 Microchip Technology Inc. TC77 3.1 Temperature Data Format 3.3 A 13-bit two’s complement digital word is used to represent the temperature. The Least Significant Bit (LSb) is equal to 0.0625°C. Note that the last two LSb bits (Bit 0 and 1) are tri-stated and are represented as a logic ‘1’ in the table. Bit 2 is set to logic ‘1’ after the completion of the first temperature conversion following a powerup or voltage reset event. TABLE 3-1: Temperature TC77 OUTPUT Binary MSB / LSB Hex +125°C 0011 1110 1000 0111 3E 87h +25°C 0000 1100 1000 0111 0B 87h +0.0625°C 0000 0000 0000 1111 00 0Fh 0°C 0000 0000 0000 0111 00 07h -0.0625°C 1111 1111 1111 1111 FF FFh -25°C 1111 0011 1000 0111 F3 87h -55°C 1110 0100 1000 0111 E4 87h An over-temperature condition can be determined by reading only the first few Most Significant Bits (MSb) of the temperature data. For example, the microprocessor could read only the first four bits of the Temperature register in order to determine that an over-temperature condition exists. 3.2 Power-Up And Power-Down The TC77 is in the Continuous Temperature Conversion mode at power-up. The first valid temperature conversion will be available approximately 300 ms (refer to “Temperature to Bits Converter” section listed in the DC characteristics table) after power-up. Bit 2 of the Temperature register is set to a logic ‘1’ after the completion of the first temperature conversion following a powerup or voltage reset event. Bit 2 is set to logic ‘0’ during the time needed to complete the first temperature conversion. Thus, the status of bit 2 can be monitored to indicate the completion of the first temperature conversion. A supply voltage lower than 1.6V (typ.) is considered a power-down state for the TC77. The device will reset itself and continue its normal Continuous Conversion mode of operation when the supply voltage rises above the nominal 1.6V. A minimal supply voltage of 2.7V is required in order to ensure proper operation of the device. 2002 Microchip Technology Inc. Serial Bus Interface The serial interface consists of the Chip Select (CS), Serial Clock (SCK) and Serial Data (SI/O) signals. The TC77 meets the SPI and MICROWIRE bus specifications, with the serial interface designed to be compatible with the Microchip PICmicro® family of microcontrollers. The CS input is used to select the TC77 when multiple devices are connected to the serial clock and data lines. The CS line is also used to synchronize the data, which is written to, or read from, the device when CS is equal to a logic ‘0’ voltage. The SCK input is disabled when CS is a logic ‘1’. The falling edge of the CS line initiates communication, while the rising edge of CS completes the communication. The SCK input is provided by the external microcontroller and is used to synchronize the data on the SI/O line. The Temperature and Manufacturer ID registers are read only while the Configuration register is a read/ write register. Figure 3-2 provides a timing diagram of a read operation of the Temperature register. Communication with the TC77 is initiated when the CS goes to a logic ‘0’. The Serial I/O signal (SI/O) then transmits the first bit of data. The microcontroller serial I/O bus master clocks the data in on the rising edge of SCK. The falling edge of SCK is then used to clock out the rest of the data. After 14 bits of data (thirteen temperature bits and Bit 2) have been transmitted, the SI/O line is then tri-stated. Note that CS can be taken to a logic ‘1’ at any time during the data transmission if only a portion of the temperature data information is required. The TC77 will complete the conversion, and the output shift register will be updated, if CS goes to the inactive state while in the middle of a conversion. Figure 3-3 provides a timing diagram of a multi-byte communication operation consisting of a read of the Temperature Data register, followed by a write to the Configuration register. The first 16 SCK pulses are used to transmit the TC77's temperature data to the microcontroller. The second group of 16 SCK pulses are used to receive the microcontroller command to place the TC77 either in Shutdown or Continuous Temperature Conversion mode. Note that the TC77 is in the Continuous Temperature Conversion mode at powerup. The data written to the TC77’s Configuration register should be either all 0’s or all 1’s, corresponding to either the Continuous Temperature Conversion or Shutdown mode, respectively. The TC77 is in Shutdown mode when Bits C0 to C7 are all equal to 1’s. The TC77 will be in the Continuous Conversion mode if a ‘0’ in any bit location from C0 to C7 is written to the Configuration register. DS20092A-page 9 TC77 CS tCS-SCK CLK 1 SI/O HI-Z 8 T 12 T 11 T 9 T 10 T 8 T 7 T 6 13 T 5 T 4 T 3 T 2 T 1 HI-Z T 0 FIGURE 3-2: Temperature Read Timing Diagram - (Reading only the first 13 Bits of the Temperature Register). CS tCS-SCK CLK 1 SI/O HI-Z T 12 8 T T 11 10 T 9 T 8 T 7 T 6 T 5 1 T 4 8 T 3 T 2 T 1 T BIT 0 2 HI-Z 8 1 C C C C C C 15 14 13 12 11 10 C 9 C 8 C 7 C 6 TEMPERATURE REGISTER Notes: CONFIGURATION REGISTER Notes: 1. 1. 2. 2. 3. Bit 2 = 0 during power-up for the first temperature conversion. Bit 2 =1 after the completion of the first temperature conversion following power-up or a reset event. Bits 1 and 0 are “DON”T CARES”. FIGURE 3-3: Diagram. 8 1 C 5 C 4 C 3 C 2 C 1 C 0 HI-Z XX00 = Continuous Conversion Mode XXFF = Shutdown Mode Temperature Read Followed By A Write To The Configuration Register Timing. It is recommended that the user write all ‘0’s or all ‘1’s to the Configuration register. While the following codes can be transmitted to the TC77, any other code may put the TC77 into a test mode reserved by Microchip for calibration and production verification tests. The following communication steps can be used to obtain the Manufacturer's ID and put the device into the Continuous Conversion mode. The Manufacturer’s ID register is only accessible for a read operation, if the TC77 is in Shutdown mode. • • • • • • • • • 1. 2. 00 hex 01 hex 03 hex 07 hex 0F hex 1F hex 3F hex 7F hex FF hex 3. 4. 5. 6. CS goes low to initiate the communication cycle. Read 16 bits of temperature data from the Temperature register. Write 16 bits of data (i.e. XXFF hex) to the Configuration register to enter Shutdown mode. Read the 16 bits from the Manufacturer's ID register (C15:C8 = 54 hex) to verify that the sensor is a Microchip device. Write 8 to 16 bits of data (00 or 0000 hex) to enter Continuous Conversion Mode. Return CS high to terminate the communication cycle. The time between a complete temperature conversion and data transmission is approximately 300 msec. DS20092A-page 10 2002 Microchip Technology Inc. TC77 4.0 INTERNAL REGISTER STRUCTURE The TC77 Internal register structure consists of three registers. The Temperature and Manufacturer’s Identification registers are read only, while the Configuration register is write only. TABLE 4-1: REGISTERS FOR TC77 Name Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value at Powerup/Reset CONFIG C15 C14 C13 C12 C11 C10 C9 C8 C7 C6 C5 C4 C3 C2 C1 C0 XXXX/XXXX 0000/0000 TEMP T12 T11 T10 T9 T8 T7 T6 T5 T4 T3 T2 T1 T0 * x x 1111/1111 0000/0*XX M_ID 0 1 0 1 0 1 0 0 0 0 0 0 0 0 x x 0101/0100 0000/00XX * Bit 2 = 0 during power-up; otherwise, bit 2 =1 4.1 Configuration Register (CONFIG) The Configuration register is write only. This register selects either Shutdown, Continuous Conversion or Test modes: • C15:C0 = XXXX/XXXX 1111/1111 (Shutdown mode) • C15:C0 = XXXX/XXXX 0000/0000 (Continuous Conversion mode) • The TC77 is in Shutdown mode when bits C0 to C7 are all equal to ‘1’s. The TC77 will be in the Continuous Conversion mode if a ‘0’ in any bit location from C0 to C7 is written to the Configuration register. The TC77 is in the Continuous Conversion mode at power-up. It is recommended that the user write all ‘0’s or all ‘1’s to the Configuration register because other bit codes may put the TC77 in a test mode used for calibration and production verification tests. Section 3.3 lists the Configuration register bit codes that can be written to the TC77 without having the device enter a production test mode. During Shutdown mode, the serial bus is still active. The current consumption of the TC77 will be less than 1 µA during the time between serial communication. 2002 Microchip Technology Inc. 4.2 Temperature Register (TEMP) The Temperature register is read only and holds the temperature conversion data. Bits 0 and 1 are undefined and will be tri-state outputs during a read sequence. Bit 2 is set to a logic ‘1’ after completion of the first temperature conversion following a power-up or reset event. Bit 2 is set to a logic ‘0’ during the time needed to complete the first temperature conversion. Therefore, the status of bit 2 can be monitored to indicate that the TC77 has completed the first temperature conversion. Bits 15:3 contain the 13 bit two’s complement data from the temperature conversion. 4.3 Manufacturer’s ID Register (M_ID) The Manufacturer’s Identification code is contained in this read only register. The Manufacturer ID register is only available for a read operation when the TC77 is in Shutdown mode. The Manufacturer’s ID code is contained in bits 15:8 and is equal to 54 hex to indicate a Microchip device. Bits 1:0 are undefined and will be tristate outputs during a read sequence, while bits 7:2 are set to ‘0’. DS20092A-page 11 TC77 5.0 APPLICATION INFORMATION The TC77 does not require any additional components in order to measure temperature. However, it is recommended that a decoupling capacitor of 0.1 µF to 1 µF be provided between the VDD and VSS (Ground) pins (a high frequency ceramic capacitor should be used). It is necessary for the capacitor to be located as close as possible to the integrated circuit (IC) power pins in order to provide effective noise protection to the TC77. The TC77 measures temperature by monitoring the voltage of a diode located on the IC die. A low-impedance thermal path between the die and the printed circuit board (PCB) is provided by the IC pins of the TC77. Therefore, the TC77 effectively monitors the temperature of the PCB board. The thermal path between the ambient air is not as efficient because the plastic IC housing package functions as a thermal insulator. Thus, the ambient air temperature (assuming that a large temperature gradient exists between the air and PCB) has only a small effect on the temperature measured by the TC77. A potential for self-heating errors can exist if the TC77 SPI communication lines are heavily loaded. Typically, the self-heating error is negligible because of the relatively small current consumption of the TC77. A temperature accuracy error of approximately 0.5°C will result from self-heating if the SPI communication pins sink/source the maximum current specified for the TC77. Therefore, to maximize the temperature accuracy, the output loading of the SPI signals should be minimized. DS20092A-page 12 2002 Microchip Technology Inc. TC77 6.0 PACKAGING INFORMATION 6.1 Package Marking Information Example: 5-Lead SOT-23 TC77-3.3MCTTR = CN XXNN TC77-5.0MCTTR = CP 8-Lead SOIC (150 mil) XXXXXXXX XXXXYYWW NNN Legend: Note: * XX...X Y YY WW NNN CP57 Example: TC77-33 I/SN0222 057 Customer specific information* Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week ‘01’) Alphanumeric traceability code 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. Standard marking consists of Microchip part number, year code, week code, and traceability code. Please check with your Microchip Sales Office. 2002 Microchip Technology Inc. DS20092A-page 13 TC77 5-Lead Plastic Small Outline Transistor (OT) (SOT23) E E1 p B p1 n D 1 α c A Units Dimension Limits n Number of Pins p Pitch p1 Outside lead pitch (basic) Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Foot Length Foot Angle Lead Thickness Lead Width Mold Draft Angle Top Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic φ L β A A2 A1 E E1 D L φ c B α β MIN .035 .035 .000 .102 .059 .110 .014 0 .004 .014 0 0 A2 A1 INCHES* NOM 5 .038 .075 .046 .043 .003 .110 .064 .116 .018 5 .006 .017 5 5 MAX .057 .051 .006 .118 .069 .122 .022 10 .008 .020 10 10 MILLIMETERS NOM 5 0.95 1.90 0.90 1.18 0.90 1.10 0.00 0.08 2.60 2.80 1.50 1.63 2.80 2.95 0.35 0.45 0 5 0.09 0.15 0.35 0.43 0 5 0 5 MIN MAX 1.45 1.30 0.15 3.00 1.75 3.10 0.55 10 0.20 0.50 10 10 Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MO-178 Drawing No. C04-091 DS20092A-page 14 2002 Microchip Technology Inc. TC77 8-Lead Plastic Small Outline (SN) – Narrow, 150 mil (SOIC) E E1 p D 2 B n 1 h α 45° c A2 A φ β L Units Dimension Limits n p 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 Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic A A2 A1 E E1 D h L φ c B α β MIN .053 .052 .004 .228 .146 .189 .010 .019 0 .008 .013 0 0 A1 INCHES* NOM 8 .050 .061 .056 .007 .237 .154 .193 .015 .025 4 .009 .017 12 12 MAX .069 .061 .010 .244 .157 .197 .020 .030 8 .010 .020 15 15 MILLIMETERS NOM 8 1.27 1.35 1.55 1.32 1.42 0.10 0.18 5.79 6.02 3.71 3.91 4.80 4.90 0.25 0.38 0.48 0.62 0 4 0.20 0.23 0.33 0.42 0 12 0 12 MIN MAX 1.75 1.55 0.25 6.20 3.99 5.00 0.51 0.76 8 0.25 0.51 15 15 Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MS-012 Drawing No. C04-057 2002 Microchip Technology Inc. DS20092A-page 15 TC77 NOTES: DS20092A-page 16 2002 Microchip Technology Inc. TC77 ON-LINE SUPPORT Microchip provides on-line support on the Microchip World Wide Web site. The web site is used by Microchip as a means to make files and information easily available to customers. To view the site, the user must have access to the Internet and a web browser, such as Netscape® or Microsoft® Internet Explorer. Files are also available for FTP download from our FTP site. Connecting to the Microchip Internet Web Site The Microchip web site is available at the following URL: www.microchip.com SYSTEMS INFORMATION AND UPGRADE HOT LINE The Systems Information and Upgrade Line provides system users a listing of the latest versions of all of Microchip's development systems software products. Plus, this line provides information on how customers can receive the most current upgrade kits.The Hot Line Numbers are: 1-800-755-2345 for U.S. and most of Canada, and 1-480-792-7302 for the rest of the world. 092002 The file transfer site is available by using an FTP service to connect to: ftp://ftp.microchip.com The web site and file transfer site provide a variety of services. Users may download files for the latest Development Tools, Data Sheets, Application Notes, User's Guides, Articles and Sample Programs. A variety of Microchip specific business information is also available, including listings of Microchip sales offices, distributors and factory representatives. Other data available for consideration is: • Latest Microchip Press Releases • Technical Support Section with Frequently Asked Questions • Design Tips • Device Errata • Job Postings • Microchip Consultant Program Member Listing • Links to other useful web sites related to Microchip Products • Conferences for products, Development Systems, technical information and more • Listing of seminars and events 2002 Microchip Technology Inc. DS20092A-page 17 TC77 READER RESPONSE It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip product. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our documentation can better serve you, please FAX your comments to the Technical Publications Manager at (480) 792-4150. Please list the following information, and use this outline to provide us with your comments about this document. To: Technical Publications Manager RE: Reader Response Total Pages Sent ________ From: Name Company Address City / State / ZIP / Country Telephone: (_______) _________ - _________ FAX: (______) _________ - _________ Application (optional): Would you like a reply? Device: TC77 Y N Literature Number: DS20092A Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs? 3. Do you find the organization of this document easy to follow? If not, why? 4. What additions to the document do you think would enhance the structure and subject? 5. What deletions from the document could be made without affecting the overall usefulness? 6. Is there any incorrect or misleading information (what and where)? 7. How would you improve this document? DS20092A-page 18 2002 Microchip Technology Inc. TC77 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. -X.X X XX Device Supply Voltage Temperature Range Package Device: TC77: Supply Voltage: 3.3 = VDD = Accuracy optimized for 3.3V 5.0 = VDD = Accuracy optimized for 5.0V = Thermal Sensor with SPI Interface Temperature Range: M -55°C to +125°C Package: CTTR = Plastic Small Outline Transistor (SOT-23), 5-lead (Tape and Reel only) OA = Plastic SOIC, (150 mil Body), 8-lead Examples: a) TC77-3.3MOA: 3.3V Thermal Sensor in SOIC package. b) TC77-5.0MOA: 5.0V Thermal Sensor in SOIC package. c) TC77-3.3MOATR: 3.3V Thermal Sensor in SOIC package, Tape and Reel. d) TC77-5.0MOATR: 5.0V Thermal Sensor in SOIC package, Tape and Reel. e) TC77-3.3MCTTR: 3.3V Thermal Sensor in SOT-23 package, Tape and Reel. f) TC77-5.0MCTTR: 5.0V Thermal Sensor in SOT-23 package, Tape and Reel. Sales and Support Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. 2. 3. Your local Microchip sales office The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277 The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. 2002 Microchip Technology Inc. DS20092A-page19 TC77 NOTES: DS20092A-page 20 2002 Microchip Technology Inc. Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. No representation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, K EELOQ, MPLAB, PIC, PICmicro, PICSTART and PRO MATE are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, microID, MXDEV, MXLAB, PICMASTER, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. dsPIC, dsPICDEM.net, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, microPort, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, PICC, PICDEM, PICDEM.net, rfPIC, Select Mode and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. Serialized Quick Turn Programming (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. © 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona in July 1999 and Mountain View, California in March 2002. The Company’s quality system processes and procedures are QS-9000 compliant for its PICmicro® 8-bit MCUs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, non-volatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001 certified. 2002 Microchip Technology Inc. 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