Datasheet

0.01 0.1 1 10
CONVERSION TIME (sec)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
AVERAGE I
DD
(mA)
V
DD
= +3.3V
T
A
= 25°C
LM95233
www.ti.com SNIS145E –AUGUST 2006–REVISED MARCH 2013
– Status 4 (TCRIT3)
– Diode Model Status
6. Mask Registers
– TCRIT1 Mask
– TCRIT2 Mask
– TCRIT3 Mask
7. Limit Registers
– Local Tcrit Limit
– Remote 1 Tcrit-1 Limit
– Remote 2 Tcrit-1 Limit
– Remote 1 Tcrit-2 and Tcrit-3 Limit
– Remote 2 Tcrit-2 and Tcrit-3 Limit
– Common Tcrit Hysteresis
8. Manufacturer ID Register
9. Revision ID Register
CONVERSION SEQUENCE
The LM95233 takes approximately 95 ms to convert the Local Temperature, Remote Temperatures 1 and 2, and
to update all of its registers. These conversions for each thermal diode are addressed in a round robin sequence.
Only during the conversion process the busy bit (D7) in Status register (02h) is high. The conversion rate may be
modified by the Conversion Rate bits found in the Configuration Register (03h). When the conversion rate is
modified a delay is inserted between each round of conversions, the actual time for each round remains at 95 ms
(typical all channels enabled). The time a round takes depends on the number of channels that are on. Different
conversion rates will cause the LM95233 to draw different amounts of average supply current as shown in
Figure 10. This curve assumes all the channels are on. If channels are turned off the average current will drop
since the round robin time will decrease and the shutdown time will increase during each conversion interval.
Figure 10. Conversion Rate Effect on Power Supply Current
POWER-ON-DEFAULT STATES
LM95233 always powers up to these known default states. The LM95233 remains in these states until after the
first conversion.
1. All Temperature readings set to 0°C until the end of the first conversion
2. Diode Model Select: Remote 1 set to 65 nm Intel processor, Remote 2 set to MMBT3904
3. Remote offset for all channels 0°C
4. Configuration: Active converting
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