LM96000EVAL/NOPB National Semiconductor, LM96000EVAL/NOPB Datasheet - Page 23

• Manufacturer Part Number: LM96000EVAL/NOPB
• Description: BOARD EVALUATION LM96000
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM96000EVAL/NOPB

• Sensor Type: Temperature, Fan Controller
• Sensing Range: 0°C ~ 125°C
• Interface: SMBus (2-Wire/I²C)
• Sensitivity: ±1°C
• Voltage - Supply: 3 V ~ 3.6 V
• Embedded: No
• Utilized Ic / Part: LM96000
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM96000EVAL

HLFRQ
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Register
Address
62h
63h
Range Selection RAN [3:0]
This register becomes Read Only when the Ready/Lock/Start/Override register Lock bit is set. Any further attempts to write to this
register shall have no effect. After power up the default value is used whenever the Ready/Lock/Start/Override register Start bit is
cleared even though modifications to this register are possible.
4.16 Registers 62, 63h: Min/Off, Spike Smoothing
The Off/Min Bits [7:5] specify whether the duty cycle will be 0% or Minimum Fan Duty when the measured temperature falls below
the Temperature LIMIT register setting (see table below). OFF1 applies to fan 1, OFF2 applies to fan 2, and OFF3 applies to fan
3.
Read/
Write
R/W
R/W
Register
Name
Min/Off, Zone1 Spike Smoothing
Zone2, Zone3 Spike Smoothing
Freq [2:0]
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
RAN [3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
TABLE 6. Register Setting vs PWM Frequency
PWM Frequency
10.01 Hz
15.02 Hz
23.14 Hz
30.04 Hz
38.16 Hz
47.06 Hz
61.38 Hz
94.12 Hz
22.5 kHz
24 kHz
25.7 kHz
25.7 kHz
27.7 kHz
27.7 kHz
30 kHz
30 kHz
Bit 7
(MSB)
OFF3 OFF2 OFF1 RES
ZN2E ZN2-2 ZN2-1 ZN2-0 ZN3E ZN3-2 ZN3-1 ZN3-0 00h
Bit 6
23
Range (°C)
2
2.5
3.33
4
5
6.67
8
10
13.33
16
20
26.67
32
40
53.33
80
Bit 5
Bit 4
Bit 3
ZN1E ZN1-2 ZN1-1 ZN1-0 00h
Bit 2
Bit 1
Bit 0
(LSB)
Default
Value
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