SBOS363F June 2006 – May 2018 TMP275
PRODUCTION DATA.
The temperature register of the TMP275 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 Figure 13 and Figure 14. Note that byte 1 is the most significant byte, followed by byte 2, the least significant byte. The first 12 bits are used to indicate temperature, with all remaining bits equal to zero. The least significant byte does not have to be read if that information is not needed. Data format for temperature is summarized in Table 1. Following power up or reset, the Temperature Register reads 0°C until the first conversion is complete. The user can obtain 9, 10, 11, or 12 bits of resolution by addressing the Configuration Register and setting the resolution bits accordingly. For 9-, 10-, or 11-bit resolution, the most significant bits in the Temperature Register are used with the unused LSBs set to zero
TEMPERATURE
(°C) |
DIGITAL OUTPUT
(BINARY) |
HEX |
---|---|---|
128 | 0111 1111 1111 | 7FF |
127.9375 | 0111 1111 1111 | 7FF |
100 | 0110 0100 0000 | 640 |
80 | 0101 0000 0000 | 500 |
75 | 0100 1011 0000 | 4B0 |
50 | 0011 0010 0000 | 320 |
25 | 0001 1001 0000 | 190 |
0.25 | 0000 0000 0100 | 004 |
0 | 0000 0000 0000 | 000 |
–0.25 | 1111 1111 1100 | FFC |
–25 | 1110 0111 0000 | E70 |
–55 | 1100 1001 0000 | C90 |