- 您现在的位置：买卖IC网 > PDF目录44572 > LM85BIMQ/NOPB (NATIONAL SEMICONDUCTOR CORP) SPECIALTY ANALOG CIRCUIT, PDSO24 PDF资料下载
参数资料
| 型号： | LM85BIMQ/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封装： | QSOP-24 |
| 文件页数： | 25/26页 |
| 文件大小： | 261K |
| 代理商： | LM85BIMQ/NOPB |
Functional Description (Continued)
1.
Set limits and parameters (not necessarily in this order):
– [5F-61h] Set PWM frequencies and auto fan control range.
– [62-63h] Set spike smoothing and min/off.
– [5C-5Eh] Set the fan spin-up delays.
– [5C-5Eh] Match each fan with a corresponding thermal zone.
– [67-69h] Set the fan temperature limits.
– [6A-6Ch] Set the temperature absolute limits.
– [64-66h] Set the PWM minimum duty cycle.
– [6D-6Eh] Set the temperature Hysteresis values.
2.
[40h] Set bit 0 (START) to update fan control and limit register values and start fan control based on these new values.
3.
[40h] Set bit 1 (LOCK) to lock the fan limit and parameter registers (optional).
3.0 AUTO FAN CONTROL OPERATING MODE
The LM85 includes the circuitry for automatic fan control. In Auto Fan Mode, the LM85 will automatically adjust the PWM duty
cycle of the PWM outputs. PWM outputs are assigned to a thermal zone based on the fan configuration registers. It is possible
to have more than one PWM output assigned to a thermal zone. For example, PWM outputs 2 and 3, connected to two chassis
fans, may both be controlled by thermal zone 2. At any time, the temperature of a zone exceeds its absolute limit, all PWM outputs
will go to 100% duty cycle to provide maximum cooling to the system.
4.0 REGISTER SET
Register
Address
Read/
Write
Register
Name
Bit 7
(MSB)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(LSB)
Default
Value
Lock?
20h
R
2.5V
7
6
5
4
3
2
1
0
N/A
21h
R
V
CCP
7
6
5
4
3
2
1
0
N/A
22h
R
3.3V
7
6
5
4
3
2
1
0
N/A
23h
R
5V
7
6
5
4
3
2
1
0
N/A
24h
R
12V
7
6
5
4
3
2
1
0
N/A
25h
R
Processor (Zone1) Temp
7
6
5
4
3
2
1
0
N/A
26h
R
Internal (Zone2) Temp
7
6
5
4
3
2
1
0
N/A
27h
R
Remote (Zone3) Temp
7
6
5
4
3
2
1
0
N/A
28h
R
Tach1 LSB
7
6
5
4
3
2
LEVEL1 LEVEL0
N/A
29h
R
Tach1 MSB
15
14
13
12
11
10
9
8
N/A
2Ah
R
Tach2 LSB
7
6
5
4
3
2
LEVEL1 LEVEL0
N/A
2Bh
R
Tach2 MSB
15
14
13
12
11
10
9
8
N/A
2Ch
R
Tach3 LSB
7
6
5
4
3
2
LEVEL1 LEVEL0
N/A
2Dh
R
Tach3 MSB
15
14
13
12
11
10
9
8
N/A
2Eh
R
Tach4 LSB
7
6
5
4
3
2
LEVEL1 LEVEL0
N/A
2Fh
R
Tach4 MSB
15
14
13
12
11
10
9
8
N/A
30h
R/W
Fan1 Current PWM Duty
7
6
5
4
3
2
1
0
N/A
31h
R/W
Fan2 Current PWM Duty
7
6
5
4
3
2
1
0
N/A
32h
R/W
Fan3 Current PWM Duty
7
6
5
4
3
2
1
0
N/A
3Eh
R
Company ID
7
6
5
4
3
2
1
0
01h
3Fh
R
Version/Stepping
VER3 VER2 VER1 VER0
STP3
STP2
STP1
STP0
60h
40h
R/W
Ready/Lock/Start/Override
RES
OVRID READY
LOCK
START
00h
41h
R
Interrupt Status Register 1
ERR
ZN3
ZN2
ZN1
5V
3.3V
V
CCP
2.5V
00h
42h
R
Interrupt Status Register 2 ERR2 ERR1 FAN4 FAN3
FAN2
FAN1
RES
12V
00h
43h
R
VID0–4
RES
VID4
VID3
VID2
VID1
VID0
N/A
44h
R/W
2.5V Low Limit
7
6
5
4
3
2
1
0
00h
45h
R/W
2.5V High Limit
7
6
5
4
3
2
1
0
FFh
46h
R/W
V
CCP Low Limit
7
6
5
4
3
2
1
0
00h
47h
R/W
V
CCP High Limit
7
6
5
4
3
2
1
0
FFh
48h
R/W
3.3V Low Limit
7
6
5
4
3
2
1
0
00h
LM85
www.national.com
8
相关PDF资料 |
PDF描述 |
|---|---|
| LM9140BYZ-5.0X | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, PBCY3 |
| LM9140BYZ-4.1X | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 4.096 V, PBCY3 |
| LM9140BYZ-5.0 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 5 V, PBCY3 |
| LM9140BYZ-4.1 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 4.096 V, PBCY3 |
| LM9801CCVX | SPECIALTY ANALOG CIRCUIT, PQCC52 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM85BIMQX | 制造商:Rochester Electronics LLC 功能描述:SYSTEM HDW MONITOR W/FAN CNTRL - Bulk |
| LM85BIMQX/NOPB | 制造商:Texas Instruments 功能描述:Temp Sensor Digital Serial (2-Wire) 24-Pin QSOP T/R |
| LM86 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:【0.75∑C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface |
| LM86CIM | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| LM86CIM/NOPB | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
发布紧急采购，3分钟左右您将得到回复。