The STTS2002 is targeted for DIMM modules in mobile personal computing platforms (laptops), servers and other industrial applications. The thermal sensor (TS) in the STTS2002 is compliant with the JEDEC specification TSE2002a2, which defines memory module thermal sensors requirements for mobile platforms. The 2 Kb serial presence detect (SPD) I²C-compatible electrically erasable programmable memory (EEPROM) in the STTS2002 is organized as 256 x8 bits and is functionally identical to the industry standard M34E02.

The TS-SPD EEPROM combination provides space as well as cost savings for mobile and server platform dual inline memory modules (DIMM) manufacturers, as it is packaged in the compact 2 mm x 3 mm 8-lead TDFN package with a thinner maximum height of 0.80 mm. The DN package is compliant to JEDEC MO-229, variation WCED-3.

The digital temperature sensor has a programmable 9-12 bit analog-to-digital converter (ADC) which monitors and digitizes the temperature to a resolution of up to 0.0625 °C. The default resolution is 0.25 °C/LSB (10-bit). The typical accuracies over these temperature ranges are: ±2 °C over the full temperature measurement range of –40 °C to 125 °C, ±1 °C in the +40 °C to +125 °C active temperature range, and ±0.5 °C in the +75 °C to +95 °C monitor temperature range.

The temperature sensor in the STTS2002 is specified for operating at supply voltages from 2.3 V to 3.6 V. Operating at 3.3 V, the typical supply current is 160 μA (includes SMBus communication current).

The on-board sigma delta ADC converts the measured temperature to a digital value that is calibrated in °C. For Fahrenheit applications, a lookup table or conversion routine is required. The STTS2002 is factory-calibrated and requires no external components to measure temperature.

The digital temperature sensor component has user-programmable registers that provide the capabilities for DIMM temperature-sensing applications. The open drain event output pin is active when the monitoring temperature exceeds a programmable limit, or it falls above or below an alarm window. The user has the option to set the event output as a critical temperature output. This pin can be configured to operate in either a comparator mode for thermostat operation or in interrupt mode.

stts2002是针对个人移动计算平台的DIMM模块（笔记本电脑）、服务器和其他工业应用。热传感器（TS）在stts2002符合JEDEC规范tse2002a2，它定义了存储器模块的热传感器要求的移动平台。2 kb的串行存在检测（SPD）I2C兼容的电可擦除可编程存储器（EEPROM）在stts2002由256 x8位，是行业标准m34e02功能相同。

ts-spd EEPROM的结合提供了空间，以及移动和服务器平台的双列直插式内存模块（DIMM）生产的成本节约，因为它是封装在紧凑的2毫米×3毫米的8引脚TDFN封装更薄的最大高度为0.80毫米。DN封装符合JEDEC mo-229，变化wced-3。

数字温度传感器有一个可编程的9-12位模数转换器（ADC）和数字化的温度分辨率高达0.0625°C.默认分辨率为0.25°C / LSB的显示器（10位）。以上温度范围内的典型精度为：±2°，全温测量范围为40°～125°，±1°±40°±125°，±0.5°C，±75°C。

在stts2002温度传感器工作在电源电压从2.3 V至3.6 V 3.3 V操作在指定的，典型的电源电流为160个（包括μSMBus通信流）

车载Sigma-Delta ADC转换为数字值，测得的温度校准°C.为华氏应用，查找表或转换程序是必需的。是的stts2002工厂校准，不需要外部元件来测量温度。

数字温度传感器组件具有用户可编程寄存器DIMM的温度传感应用提供能力。当监测温度超过了可编程限制时，该开漏事件输出引脚是活动的，或是在报警窗口上方或下方。用户可以选择将事件输出设置为一个临界温度输出。该引脚可以配置为在一个比较器模式操作或在温控器操作或中断模式。

Key Features

• 2.3 V memory module temperature sensor with integrated 2 Kb SPD EEPROM

• Forward compatible with JEDEC TSE 2002a2 and backward compatible with STTS424E02

• Operating temperature range:

• –40 °C to +125 °C

• Single supply voltage: 2.3 V to 3.6 V

• 2 mm x 3 mm TDFN8, height: 0.80 mm (max)

• JEDEC MO-229, WCED-3 compliant

• RoHS compliant, halogen-free

• Temperature sensor

• Temperature sensor resolution: programmable (9-12 bits)0.25 °C (typ)/LSB - (10-bit) default

• Temperature sensor accuracy (max):

  ± 1 °C from +75 °C to +95 °C± 2 °C from +40 °C to +125 °C± 3 °C from –40 °C to +125 °C

• ADC conversion time: 125 ms (max) at default resolution (10-bit)

• Typical operating supply current: 160 μA (EEPROM standby)

• Temperature hysteresis selectable set points from: 0, 1.5, 3, 6.0 °C

• Supports SMBus timeout 25 ms - 35 ms

• 2 Kb SPD EEPROM

• Functionality identical to ST’s M34E02 SPD EEPROM

• Permanent and reversible software data protection for the lower 128 bytes

• Byte and page write (up to 16 bytes)

• Self-time WRITE cycle (5 ms, max)

• Automatic address incrementing

• Two-wire bus

• Two-wire SMBus/I²C - compatible serial interface

• Supports up to 400 kHz transfer rate

• Does not initiate clock stretching

主要特点

2.3 V内存模块温度传感器集成2 KB的SPD EEPROM

与JEDEC TSE 2002a2向前兼容和向后兼容stts424e02

工作温度范围：

在40°C至125°C

单电源电压：2.3伏至3.6伏

2毫米x 3毫米tdfn8，高度：0.80毫米（最大）

JEDEC mo-229，wced-3兼容

符合RoHS标准，无卤

温度传感器

温度传感器分辨率：可编程（9-12位）0.25°C（典型值）/ LSB -（10位）的默认

温度传感器精度（最大）：±75°±1°±95°±2°±40°±125°±3°±40°±125°

ADC转换时间：125毫秒（max）在默认的分辨率（10位）

典型工作电流：160μ一（EEPROM备用

温度滞后可选择设定点：0、1.5、3、6°

支持SMBus超时25毫秒35毫秒

2 KB的SPD EEPROM

ST的m34e02 SPD EEPROM功能相同

128字节的永久和可逆的软件数据保护

字节和页面写入（最多16个字节）

自写周期（5毫秒，最大）

地址自动递增

双线总线

2线SMBus或I2C兼容的串行接口

支持多达400千赫的传输速率

不启动时钟拉伸