LM95245
- Remote and Local Temperature Channels
- Targeted for Intel 45nm Processor Diodes
- Two Formats: −128°C to +127.875°C and 0°C to 255.875°C
- Digital Filter for Remote Channel
- Programmable TCRIT and OS Thresholds
- Programmable Shared Hysteresis Register
- Diode Fault Detection
- Mask, Offset, and Status Registers
- SMBus 2.0 Compatible Interface, Supports TIMEOUT
- Programmable Conversion Rate for Best Power Consumption
- Three-Level Address Pin
- Standby Mode One-Shot Conversion Control
- Pin-for-Pin Compatible With the LM95235 and LM86, LM89, LM99
- 8-Pin VSSOP and SOIC Packages
Key Specifications
- Supply Voltage 3.0 to 3.6 V
- Supply Current, Conv. Rate = 1 Hz 350 µA (typ)
- Remote Diode Temperature
Accuracy
- TA = 25°C to 85°C; TD = 50°C to 105°C, ±0.75 °C (max)
- TA = 25°C to 85°C; TD = 40°C to 125°C, ±1.5 °C (max)
- Local Temperature
Accuracy
- TA = 25°C to 100°C, ±2.0 °C (max)
- Conversion Rate, Both Channels 16 to 0.4 Hz
All trademarks are the property of their respective owners.
The LM95245 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface and TruTherm technology that can monitor the temperature of a remote diode as well as its own temperature. The LM95245 can be used to very accurately monitor the temperature of external devices such as microprocessors. TruTherm technology allows the LM95245 to precisely monitor thermal diodes found in 90 nm and smaller geometry processes. The LM95245 is specifically targeted for Intel processors on 45nm process. LM95245 reports temperature in two different formats for +127.875°C/-128°C range and 0°C/255°C range. The LM95245 T_CRIT and OS outputs are asserted when either unmasked channel exceeds its programmed limit and can be used to shutdown the system, to turn on the system fans, or as a microcontroller interrupt function. The current status of the T_CRIT and OS pins can be read back from the status registers via the SMBus interface. All limits have a shared programmable hysteresis register.
The remote temperature channel of the LM95245 has a programmable digital filter. The LM95245 is targeted for a typical Intel® processor on a 45 nm, 65 nm or 90nm process, and has an offset register for maximum flexibility and best accuracy.
The LM95245 has a three-level address pin to connect up to 3 devices to the same SMBus master, that is shared with the OS output. The LM95245 has a programmable conversion rate register and a standby mode to save power. One conversion can be triggered in standby mode by writing to the one-shot register.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | Precision Diode Digital Temp Sensor w/TruTherm BJT Comp Tech for 45nm Process 数据表 (Rev. G) | 2013-3-22 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
LM95245SW-LINUX — 用于 LM95245 的 Linux 驱动程序
Linux 驱动程序支持 LM95245 系列远程和本地温度传感器。Linux 驱动程序支持通过 I2C 总线和接口与硬件监控子系统进行通信。
Linux 主线状态在 Linux 主线中提供：是
可通过 git.ti.com 获取：不适用
- lm95235
- lm95245
与该器件关联的文件为：
- drivers/hwmon/lm95245.c
- Documentation/hwmon/lm95245
启用驱动程序支持
使用“make (...)
SENSOREVAL — Eval Board Software For Hardware Monitors And Digital Temperature Sensors
SensorEval
SensorEval 软件支持通过 USB 接口连接的 TI 最新温度传感器和硬件监控器评估板。此外，该软件还允许访问直接安装在支持 Intel 芯片组的主板上的传感器。
- 下载 SensorEval 软件和手册
- 为以下各项提供 Windows XP 支持：
- USB 评估板（LM93 除外）
- Intel ICHx 接口（ADCS9888、LM32、LM40、LM41、LM71、LM95010 和 LM95071 除外）
- “无硬件”模式支持在没有任何硬件的情况下运行软件
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |