Datasheet

LM96000
SNAS234C –APRIL 2004–REVISED MARCH 2013 www.ti.com
Table 2. Voltage Limits vs Register Setting
Register Reading Register Reading
Register Setting
Nominal Maximum at Minimum at
Input at
Voltage Voltage Maximum Voltage Minimum
Nominal Voltage
Voltage Voltage
2.5V 2.5V C0h 3.32V FFh 0V 00h
VCCP 2.25V C0h 3.00V FFh 0V 00h
3.3V 3.3V C0h 4.38V FFh 3.0V AFh
5V 5.0V C0h 6.64V FFh 0V 00h
12V 12.0V C0h 16.00V FFh 0V 00h
4.12 Registers 4E-53h: Temperature Limit Registers
Register Read/ Register Bit 7 Bit 0 Default
Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
Address Write Name (MSB) (LSB) Value
4Eh R/W Processo 7 6 5 4 3 2 1 0 81h
r (Zone1)
Low
Temp
4Fh R/W Processo 7 6 5 4 3 2 1 0 7Fh
r (Zone1)
High
Temp
50h R/W Processo 7 6 5 4 3 2 1 0 81h
r (Zone2)
Low
Temp
51h R/W Processo 7 6 5 4 3 2 1 0 7Fh
r (Zone2)
High
Temp
52h R/W Processo 7 6 5 4 3 2 1 0 81h
r (Zone3)
Low
Temp
53h R/W Processo 7 6 5 4 3 2 1 0 7Fh
r (Zone3)
High
Temp
If an external temperature input or the internal temperature sensor either exceeds the value set in the
corresponding high limit register or falls below the value set in the corresponding low limit register, the
corresponding bit will be set automatically by the LM96000 in the Interrupt Status Register 1 (41h). For example,
if the temperature read from the Remote1− and Remote1+ inputs exceeds the Processor (Zone1) High Temp
register limit setting, Interrupt Status Register 1 ZN1 bit will be set. The temperature limits in these registers are
represented as 8 bit, 2’s complement, signed numbers in Celsius, as shown below in Table 3.
Setting the Ready/Lock/Start/Override register Lock bit has no effect on these registers.
Table 3. Temperature Limits vs Register Settings
Temperature Reading (Decimal) Reading (Hex)
−127°C −127 81h
. . .
. . .
. . .
−50°C −50 CEh
. . .
. . .
. . .
0°C 0 00h
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