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TMP006AIYZFR データシート(PDF) 10 Page - Texas Instruments |
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TMP006AIYZFR データシート(HTML) 10 Page - Texas Instruments |
10 / 21 page TMP006 TMP006B SBOS518C – MAY 2011 – REVISED DECEMBER 2012 www.ti.com TEMPERATURE REGISTER (TAMBIENT) The Temperature Register of the TMP006 and TMP006B is configured as a 14-bit, read-only register (as shown in Table 6) that stores the result of the most recent conversion for the local die temperature, TAMBIENT. Following power-up or a software reset, the Temperature Register reads 0°C (0000h) until the first conversion is complete. Table 6. Temperature Registers (Read Only) POINTER REGISTER D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 (HEX) TAMBIENT T13 T12 T11 T10 T9 T8 T7 T6 T5 T4 T3 T2 T1 T0 0 0 01h Reset value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE FORMAT The Temperature Register data format of the TMP006 and TMP006B is reported in a binary twos complement signed integer format, as Table 7 shows, with 1 LSB = 1/32°C = 0.03125. Table 7. Temperature Data Format TEMPERATURE (°C) DIGITAL OUTPUT (BINARY) SHIFTED HEX 150 0100 1011 0000 0000 12CO 125 0011 1110 1000 0000 0FA0 100 0011 0010 0000 0000 0C80 80 0010 1000 0000 0000 0A00 75 0010 0101 1000 0000 0960 50 0001 1001 0000 0000 0640 25 0000 1100 1000 0000 0320 0.03125 0000 0000 0000 0100 0001 0 0000 0000 0000 0000 0000 –0.03125 1111 1111 1111 1100 FFFC –0.0625 1111 1111 1111 1000 FFF8 –25 1111 0011 0111 0000 F370 –40 1110 1011 1111 1100 EBFC –55 1110 0100 0111 1100 E47C Converting the integer temperature result of the TMP006 and TMP006B to physical temperature is done by right- shifting the last two LSBs followed by a divide-by-32 of TREG to obtain the physical temperature result in degrees Celsius. TREG is the 14-bit signed integer contained in the corresponding register. The sign of the temperature is the same as the sign of the integer read from the TMP006 and TMP006B. In twos complement notation, the MSB is the sign bit. If the MSB is '1', the integer is negative and the absolute value can be obtained by inverting all bits and adding '1'. An alternative method of calculating the absolute value of negative integers is abs(i) = i xor FFFFh + 1. 10 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Links: TMP006 TMP006B |
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