Datasheet

LM92
www.ti.com SNIS110D –MARCH 2000–REVISED MARCH 2013
Figure 9. Inadvertent 8-Bit Read from 16-Bit Register where D7 is Zero (“0”)
POINTER REGISTER
(Selects which registers will be read from or written to):
P7 P6 P5 P4 P3 P2 P1 P0
0 0 0 0 0 Register Select
P0–P2: Register Select:
P2 P1 P0 Register
0 0 0 Temperature (Read only) (Power-up default)
0 0 1 Configuration (Read/Write)
0 1 0 T
HYST
(Read/Write)
0 1 1 T_CRIT (Read/Write)
1 0 0 T
LOW
(Read/Write)
1 0 1 T
HIGH
(Read/Write)
1 1 1 Manufacturer's ID
P3–P7: Must be kept zero.
TEMPERATURE REGISTER
Table 3. (Read Only):
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Sign MSB Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
CRIT HIGH LOW
Status Bits
D0–D2: Status Bits
D3–D15: Temperature Data. One LSB = 0.0625°C. Two's complement format.
CONFIGURATION REGISTER
Table 4. (Read/Write):
D7 D6 D5 D4 D3 D2 D1 D0
0 0 0 Fault Queue INT Polarity T_CRIT_A INT Mode Shutdown
Polarity
D0: Shutdown - When set to 1 the LM92 goes to low power shutdown mode. Power up default of “0”.
D1: Interrupt mode - 0 is Comparator Interrupt mode, 1 is Event Interrupt mode. Power up default of “0”.
D2, D3: T_CRIT_A and INT Polarity - 0 is active low, 1 is active high. Outputs are open-drain. Power up default
of “0”
D4: Fault Queue - When set to 1 the Fault Queue is enabled, see FAULT QUEUE. Power up default of “0”.
D5–D7: These bits are used for production testing and must be kept zero for normal operation.
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