- 您現在的位置：買賣IC網 > PDF目錄358861 > LM40 (National Semiconductor Corporation) Hardware Monitor with Dual Thermal Diodes and SensorPath Bus PDF資料下載
參數資料
| 型號： | LM40 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Hardware Monitor with Dual Thermal Diodes and SensorPath Bus |
| 中文描述： | 硬件監(jiān)控雙熱二極管和SensorPath總線 |
| 文件頁數： | 18/27頁 |
| 文件大?。?/td> | 369K |
| 代理商： | LM40 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁當前第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁
2.0 Register Set
(Continued)
Bit
7
Type
RO
Description
BER (Bus Error)
This bit is set when the device either generates, or receives an error indication in the ACK
bit of the transaction (i.e., no-acknowledge). BER is cleared by Device Reset or by reading the Device Status
register.
0: No transaction error occurred.
1: An ACK bit error (no-acknowledge) occurred during the last transaction.
2.8 DEVICE CONTROL (Addr: 000 101; 05h)
This register responds to a broadcast write command (Device Number 000). Write using broadcast address is ignored by bits
15-2. This register is set to the reset value by a Device Reset.
Reg
Add
Register
Name
R/
W
P
O
R
Val
Bit
15
MSb
Bit
14
Bit
13
Bit
12
Bit
11
Bit
10
Bit9
Bit
8
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
LSb
000 101
Device
Control
R/
W
0h
Reserved
0
EnF2 EnF1 Res
Low
Pwr
Shut
down
Re
set
0
0
0
0
0
0
0
0
0
Bit
0
Type
R/W
Description
Reset (Device Reset).
When set to "1" this bit initiates a Device Reset operation ( See
Section 2.2
). This bit
self-clears after the Device Reset operation is completed.
0: Normal device operation. (default)
1: Device Reset
The LM40 does not require a Device Reset command after power.
Shutdown (Shutdown Mode).
When set to "1" this bit stops the operation of all functions and places the
device in the lowest power consumption mode.
0: Device in Active Mode. (default)
1: Device in Shutdown Mode.
LowPwr (Low-Power Mode).
When set to "1" this bit slows the operation of all functions and places the
device in a low power consumption mode. In Low-Power Mode, the conversion rate of the LM40 is effected
see
Section 2.11
for further details.
0: Device in Active Mode. (default)
1: Device in Low-Power Mode.
Not supported.
Will always read "0".
EnF1 (Enable Function 1).
When bit is set to "1" this bit Function 1 is enabled for operation. A function may
require setup before this bit is set. The function registers can be accessed even when the function is
disabled.
0: Function 1 is disabled. (default)
1: Function is enabled.
EnF2 (Enable Function 2).
Same as EnF1 for Function 2.
Not supported.
Will always read "0".
1
R/W
2
R/W
3
4
RO
R/W
5
R/W
RO
15-6
2.9 TEMPERATURE MEASUREMENT FUNCTION (TYPE - 0001)
This section defines the register structure and operation of a Temperature Measurement function as it applies to the LM40. The
FuncDescriptor value of this function is ‘0001’.
2.9.1 Operation
The Temperature Measurement function as implemented in the LM40 supports 3 temperature zones, the LM40’s internal
temperature (LM40’s junction temperature) and the remote temperature of 2 thermal diodes (stand alone transistors or integrated
in chips). The function measures multiple temperature points and reports the readout to the master. The measurement of all the
enabled temperature sensors is cyclic and continuous.
Sensor Scan
The Control register of the function defines which temperature sensors are included in the scan. A sensor is
scanned only if it is enabled by the Sensor Enable bits (EN0, EN1, and EN2). The sensors are scanned in an ascending,
round-robin order, based on the sensor number. Disabled sensors are skipped and the next enabled sensor in ascending order
is scanned.
L
www.national.com
18
相關PDF資料 |
PDF描述 |
|---|---|
| LM4120AIM5X-5.0 | Precision Micropower Low Dropout Voltage Reference |
| LM4120AIM5-1.8 | Precision Micropower Low Dropout Voltage Reference |
| LM4120AIM5-3.3 | Precision Micropower Low Dropout Voltage Reference |
| LM4120AIM5X-2.5 | Precision Micropower Low Dropout Voltage Reference |
| LM4120AIM5X-3.3 | Precision Micropower Low Dropout Voltage Reference |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM400 | 制造商:LM TECHNOLOGIES 功能描述:MODULE BLUETOOTH V2.0 CLASS 1 BC04 制造商:LM TECHNOLOGIES 功能描述:BLUETOOTH MODULE, BC04, CLASS 1, EDR 制造商:LM TECHNOLOGIES 功能描述:BLUETOOTH MOD, PDA, GPS, POS, BC04, CLASS 1, EDR; Supply Voltage Min:2.7V; Supply Voltage Max:3.6V; Data Rate:3Mbps; Bluetooth Version:Bluetooth 2.0 + EDR; Bluetooth Class:Class 1; Receive Sensitivity:-88dBm; Type:Bluetooth Module ;RoHS Compliant: Yes |
| LM4001 | 制造商:SEMTECH_ELEC 制造商全稱:SEMTECH ELECTRONICS LTD. 功能描述:SURFACE MOUNT SILICON RECTIFIERS |
| LM4001G | 制造商:SEMTECH_ELEC 制造商全稱:SEMTECH ELECTRONICS LTD. 功能描述:SURFACE MOUNT GLASS PASSIVATED SILICON RECTIFIERS |
| LM4002 | 制造商:SEMTECH_ELEC 制造商全稱:SEMTECH ELECTRONICS LTD. 功能描述:SURFACE MOUNT SILICON RECTIFIERS |
| LM4002G | 制造商:SEMTECH_ELEC 制造商全稱:SEMTECH ELECTRONICS LTD. 功能描述:SURFACE MOUNT GLASS PASSIVATED SILICON RECTIFIERS |
發(fā)布緊急采購，3分鐘左右您將得到回復。