LM64EVAL National Semiconductor, LM64EVAL Datasheet - Page 20

• Manufacturer Part Number: LM64EVAL
• Description: BOARD EVALUATION LM64
• Manufacturer: National Semiconductor

Specifications of LM64EVAL

• Sensor Type: Temperature, Fan Controller
• Sensing Range: 0°C ~ 85°C
• Interface: SMBus (2-Wire/I²C)
• Sensitivity: ±1°C
• Voltage - Supply: 3 V ~ 3.6 V
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: LM64
• Lead Free Status / RoHS Status: Not applicable / Not applicable

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Address
50
4F
2.0 LM64 Registers
Fan Control Registers
Hex
HEX
HEX
5C
5D
5A
5B
5E
5F
4F
50
51
52
53
54
55
56
57
58
59
to 5F
LOOKUP TABLE HYSTERESIS
5 = 1.)
Read/
HEX
Read.
(Write
only if
Write
4A bit
R/W
reg
LOOKUP TABLE (7 Bits for Temperature and 6 Bits for PWM for each Temperature/PWM Pair)
Bits
6:0
7:6
5:0
6:0
7:6
5:0
6:0
7:6
5:0
6:0
7:6
5:0
6:0
7:6
5:0
6:0
7:6
5:0
6:0
7:6
5:0
6:0
7:6
5:0
7:5
4:0
7
7
7
7
7
7
7
7
00100
Value
POR
0x7F
0x3F
0x7F
0x3F
0x7F
0x3F
0x7F
0x3F
0x7F
0x3F
0x7F
0x3F
0x7F
0x3F
0x7F
0x3F
000
00
00
00
00
00
00
00
00
0
0
0
0
0
0
0
0
(Continued)
Lookup Table
Lookup Table
Lookup Table
Lookup Table
Lookup Table
Lookup Table
Lookup Table
Lookup Table
Lookup Table
Lookup Table
Lookup Table
Lookup Table
Lookup Table
Lookup Table
Lookup Table
Lookup Table
PWM Entry 1
PWM Entry 2
PWM Entry 3
PWM Entry 4
PWM Entry 5
PWM Entry 6
PWM Entry 7
PWM Entry 8
(Continued)
Temperature
Temperature
Temperature
Temperature
Temperature
Temperature
Temperature
Temperature
Hysteresis
Entry 1
Entry 2
Entry 3
Entry 4
Entry 5
Entry 6
Entry 7
Entry 8
Lookup
Name
Table
This bit is unused and always set to 0.
If the remote diode temperature exceeds this value, the PWM output
will be the value in Register 51.
These bits are unused and always set to 0.
The PWM value corresponding to the temperature limit in register 50.
This bit is unused and always set to 0.
If the remote diode temperature exceeds this value, the PWM output
will be the value in Register 53.
These bits are unused and always set to 0.
The PWM value corresponding to the temperature limit in register 52.
This bit is unused and always set to 0.
If the remote diode temperature exceeds this value, the PWM output
will be the value in Register 55.
These bits are unused and always set to 0.
The PWM value corresponding to the temperature limit in register 54.
This bit is unused and always set to 0.
If the remote diode temperature exceeds this value, the PWM output
will be the value in Register 57.
These bits are unused and always set to 0.
The PWM value corresponding to the temperature limit in register 56.
This bit is unused and always set to 0.
If the remote diode temperature exceeds this value, the PWM output
will be the value in Register 59.
These bits are unused and always set to 0.
The PWM value corresponding to the temperature limit in register 58.
This bit is unused and always set to 0.
If the remote diode temperature exceeds this value, the PWM output
will be the value in Register 5B.
These bits are unused and always set to 0.
The PWM value corresponding to the temperature limit in register 5A.
This bit is unused and always set to 0.
If the remote diode temperature exceeds this value, the PWM output
will be the value in Register 5D.
These bits are unused and always set to 0.
The PWM value corresponding to the temperature limit in register 5C.
This bit is unused and always set to 0.
If the remote diode temperature exceeds this value, the PWM output
will be the value in Register 5F.
These bits are unused and always set to 0.
The PWM value corresponding to the temperature limit in register 5E.
These bits are unused and always set to 0
The amount of hysteresis applied to the Lookup Table. (1 LSB = 1˚C).
20
Description