LM76-NEVAL National Semiconductor, LM76-NEVAL Datasheet - Page 11

• Manufacturer Part Number: LM76-NEVAL
• Description: EVALUATION BOARD FOR LM76-N
• Manufacturer: National Semiconductor

Specifications of LM76-NEVAL

• Sensor Type: Temperature
• Sensing Range: -55°C ~ 125°C
• Interface: I²C
• Sensitivity: ±1°C
• Voltage - Supply: 3.3V
• Embedded: No
• Utilized Ic / Part: LM76
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM76-NEVAL

1.9 POINTER REGISTER
(Selects which registers will be read from or written to):
P0–P2: Register Select:
P3–P7: Must be kept zero.
1.10 TEMPERATURE REGISTER
(Read Only):
D0–D2: Status Bits
D3–D15: Temperature Data. One LSB = 0.0625°C. Two's complement format.
1.11 CONFIGURATION REGISTER
(Read/Write):
D0: Shutdown - When set to 1 the LM76 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 Queu is enabled, see Section 1.7. Power up default of “0”.
D5–D7: These bits are used for production testing and must be kept zero for normal operation.
1.12 T
(Read/Write):
D0–D2: Undefined
D3–D15: T
T
T
Avoid programming setpoints so close that their hysteresis values overlap. See Section 1.1.
Sign
Sign
HYST
HYST
D15
D15
D7
= 2°C.
is subtracted from T
HYST
0
MSB
MSB
P7
P2
D14
D14
0
0
0
0
0
1
1
, T
HYST
LOW
, T
Bit 10
Bit 10
, T
D13
D13
LOW
HIGH
P6
P1
, T
D6
0
0
0
1
1
0
0
0
HIGH
AND T_CRIT_A REGISTERS
Bit 9
Bit 9
D12
D12
HIGH
or T_CRIT Trip Temperature Data. Power up default is T
, and T_CRIT, and added to T
P5
P0
Bit 8
Bit 8
D11
D11
0
0
1
0
1
0
1
D5
0
Temperature (Read only) (Power-up default)-
Configuration (Read/Write)
T
T_CRIT (Read/Write)
T
T
Bit 7
D10
D10
Bit7
HYST
LOW
HIGH
P4
0
(Read/Write)
(Read/Write)
(Read/Write)
Fault Queue
Bit 6
Bit6
D9
D9
D4
P3
0
Bit 5
Bit5
D8
D8
LOW
11
.
INT Polarity
P2
Bit 4
Bit 4
D7
D7
D3
Bit 3
Bit 3
D6
D6
P1
Register
T_CRIT_A
Bit 2
Bit 2
D5
Polarity
D5
Register Select
D2
LOW
= 10°C, T
Bit 1
Bit 1
D4
D4
INT Mode
Bit 0
Bit 0
D3
D3
HIGH
P0
D1
= 64°C, T_CRIT = 80°C,
CRIT
D2
D2
X
Status Bits
HIGH
Shutdown
D1
D1
X
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D0
LOW
D0
D0
X