Datasheet

LM73
www.ti.com SNIS141D –OCTOBER 2005–REVISED MAY 2009
T
HIGH
UPPER-LIMIT REGISTER
Pointer Address 02h (R/W)
Reset State: 7FE0h (+255.75°C)
D15 D14 D13 D12 D11 D10 D9 D8
SIGN 128°C 64°C 32°C 16°C 8°C 4°C 2°C
D7 D6 D5 D4 D3 D2 D1 D0
1°C 0.5°C 0.25°C reserved
Bits Name Description
15:5 Upper-Limit If the measured temperature that is stored in this register exceeds this user-programmable upper
Temperature temperature limit, the ALERT pin will go active and the THIGH flag in the Control/Status register will be
set to 1. Two's complement format.
4:0 Reserved Returns zeros upon read. Recommend writing zeros only in these bits.
T
LOW
LOWER-LIMIT REGISTER
Pointer Address 03h (R/W)
Reset State: 8000h (–256°C)
D15 D14 D13 D12 D11 D10 D9 D8
SIGN 128°C 64°C 32°C 16°C 8°C 4°C 2°C
D7 D6 D5 D4 D3 D2 D1 D0
1°C 0.5°C 0.25°C reserved
Bits Name Description
15:5 Lower-Limit If the measured temperature that is stored in the temperature register falls below this user-
Temperature programmable lower temperature limit, the ALERT pin will be deactivated and the T
LOW
flag in the
Control/Status register will be set to 1. Two's complement format.
4:0 Reserved Returns zeros upon read. Recommend writing zeros only in these bits.
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