Datasheet

LM77
www.ti.com SNIS103F –JUNE 1999–REVISED MARCH 2013
Note: Event Interrupt mode is drawn as if the user is reading the part. If the user doesn't read, the outputs would go
low and stay that way until the LM77 is read.
Figure 7. Temperature Response Diagram
TEMPERATURE DATA FORMAT
Temperature data can be read from the Temperature and Set Point registers; and written to the Set Point
registers. Temperature data can be read at any time, although reading faster than the conversion time of the
LM77 will prevent data from being updated. Temperature data is represented by a 10-bit, two's complement word
with an LSB (Least Significant Bit) equal to 0.5°C:
Digital Output
Temperature
Binary Hex
+130°C 01 0000 0100 104h
+125°C 00 1111 1010 0FAh
+25°C 00 0011 0010 032h
+0.5°C 00 0000 0001 001h
0°C 00 0000 0000 000h
−0.5°C 11 1111 1111 3FFh
−25°C 11 1100 1110 3CEh
−55°C 11 1001 0010 392h
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