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TMP101 データシート(PDF) 5 Page - Texas Instruments |
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TMP101 データシート(HTML) 5 Page - Texas Instruments |
5 / 10 page TMP100, 101 5 SBOS231C www.ti.com APPLICATIONS INFORMATION The TMP100 and TMP101 are digital temperature sensors optimal for thermal management and thermal protection applications. The TMP100 and TMP101 are I2C and SMBus interface compatible and are specified over a temperature range of –55 °C to +125°C. The TMP100 and TMP101 require no external components for operation except for pull-up resistors on SCL, SDA, and ALERT, although a 0.1 µF bypass capacitor is recommended, as shown in Figure 1 and Figure 2. POINTER REGISTER Figure 3 shows the internal register structure of the TMP100 and TMP101. The 8-bit Pointer Register of the TMP100 and TMP101 is used to address a given data register. The Pointer Register uses the two LSBs to identify which of the data registers should respond to a read or write command. Table I identifies the bits of the Pointer Register byte. Table II describes the pointer address of the registers available in the TMP100 and TMP101. Power-up Reset value of P1/P0 is 00. FIGURE 1. Typical Connections of the TMP101. TMP101 0.1 µF V+ GND 2 5 3 4 ADD0 (Input) ALERT (Output) 1 6 SCL SDA To I2C Controller NOTE: (1) SCL, SDA and ALERT require pull-up resistors for I2C bus applications. FIGURE 2. Typical Connections of the TMP100. TMP100 0.1 µF V+ GND 2 5 3 4 ADD0 (Input) ADD1 (Input) 1 6 SCL SDA To I2C Controller NOTE: (1) SCL and SDA require pull-up resistors for I2C bus applications. The die flag of the lead frame is connected to pin 2. The sensing device of the TMP100 and TMP101 is the chip itself. Thermal paths run through the package leads as well as the plastic package. The lower thermal resistance of metal causes the leads to provide the primary thermal path. The GND pin of the TMP100 or TMP101 is directly connected to the metal lead frame, and is the best choice for thermal input. To maintain the accuracy in applications requiring air or surface temperature measurement, care should be taken to isolate the package and leads from ambient air temperature. A thermally conductive adhesive will assist in achieving accurate surface temperature measurement. P7 P6 P5 P4 P3 P2 P1 P0 0 0 0 0 0 0 Register Bits TABLE I. Pointer Register Byte. P1 P0 REGISTER 0 0 Temperature Register (READ Only) 0 1 Configuration Register (READ/WRITE) 10 TLOW Register (READ/WRITE) 11 THIGH Register (READ/WRITE) TABLE II. Pointer Addresses of the TMP100 and TMP101 Registers. D7 D6 D5 D4 D3 D2 D1 D0 T11 T10 T9 T8 T7 T6 T5 T4 TABLE III. Byte 1 of Temperature Register. D7 D6 D5 D4 D3 D2 D1 D0 T3 T2 T1 T0 0 0 0 0 TABLE IV. Byte 2 of Temperature Register. TEMPERATURE REGISTER The Temperature Register of the TMP100 or TMP101 is a 12- bit read-only register that stores the output of the most recent conversion. Two bytes must be read to obtain data and are described in Table III and Table IV. The first 12 bits are used to indicate temperature with all remaining bits equal to zero. Data format for temperature is summarized in Table V. Following power-up or reset, the Temperature Register will read 0 °C until the first conversion is complete. FIGURE 3. Internal Register Structure of TMP100 and TMP101. I/O Control Interface SCL SDA Temperature Register Configuration Register T LOW Register T HIGH Register Pointer Register |
同様の部品番号 - TMP101 |
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同様の説明 - TMP101 |
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