MCP9805

更新时间： 2024-11-13 04:16:23

品牌	Logo	应用领域
美国微芯 - MICROCHIP		传感器温度传感器
页数	文件大小	规格书
34页	506K
描述
Memory Module Digital Temperature Sensor

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MCP9805 数据手册

MCP9805

Memory Module Digital Temperature Sensor

Features

Description

• Meets JEDEC Standard JC42.4 for Mobile

Platform Memory Module Thermal Sensor

Microchip Technology Inc.’s MCP9805 digital tempera-

ture sensor converts temperatures between -40°C and

+125°C to a digital word. This sensor is designed to

meet the JEDEC standard JC42.4 for Mobile Platform

Memory Module Thermal Sensor. This device provides

an accuracy of ±1°C (max.) from a temperature range

of +75°C to +95°C (active range) and ±2°C (max.) from

+40°C to +125°C (monitor range) as defined in the

JEDEC standard.

• Temperature-to-Digital Converter

• Accuracy with 0.25 °C/LSb Resolution:

- ±1°C (max.) from +75°C to +95°C

- ±2°C (max.) from +40°C to +125°C

- ±3°C (max.) from -20°C to +125°C

• Programmable Temperature Monitor Boundary

• Critical Temperature Output

The MCP9805 comes with user-programmable

• Operating Voltage Range: 3.0V to 3.6V

• 2-wire Interface: SMBus/Standard mode I²C™

Compatible

registers

that

provide

flexibility

for

DIMM

temperature-sensing applications. The registers allow

user-selectable settings such as Shutdown or

Low-Power modes and the specification of tempera-

ture event and critical output boundaries. When the

temperature changes beyond the specified boundary

limits, the MCP9805 outputs an Event signal. The user

has the option of setting the Event output signal polarity

as either an active-low or active-high comparator

output for thermostat operation, or as a temperature

event interrupt output for microprocessor-based

systems. The Event output can also be configured as a

critical temperature output.

• Operating Current: 200 µA (typ.)

• Shutdown Current: 0.1 µA (typ.)

• Available Packages: 2x3 DFN-8, TSSOP-8

Typical Applications

• Dual In-line Memory Module (DIMM)

• Personal Computers (PCs) and Servers

• Hard Disk Drives and Other PC Peripherals

• General Purpose Temperature Sensor

This sensor has a 2-wire industry-standard SMBus

and Standard mode I²C compatible (100 kHz bus

clock) serial interface protocol, allowing up to eight sen-

sors to be controlled in a single serial bus. These fea-

tures make the MCP9805 ideal for sophisticated

multi-zone temperature-monitoring applications.

Typical Application

Memory Module

Memory

Package Types

MCP9805

Temperature

Sensor

SPD*

8-Pin DFN (2x3)

MCP9805

EEPROM

Event

SCLK

SDA

GND

8-Pin TSSOP

Event

SCLK

SDA

3.3 V_{DD_SPD}

GND

SDA SCLK

Event

* Serial Presence Detect

DS21977B-page 1

12 3 4 5 6 7...34

中文翻译

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与MCP9805相关器件

型号	品牌	获取价格	描述	数据表
MCP9805_13	MICROCHIP	获取价格	Memory Module Digital Temperature Sensor
MCP9805-BE/MC	MICROCHIP	获取价格	Memory Module Digital Temperature Sensor
MCP9805-BE/P	MICROCHIP	获取价格	Resistor-Programmable Temperature Switch, -40C to +125C, 8-PDIP, TUBE
MCP9805-BE/ST	MICROCHIP	获取价格	Memory Module Digital Temperature Sensor
MCP9805-BEMC	MICROCHIP	获取价格	DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT, 2 X 3 MM, PLASTIC,
MCP9805-BEST	MICROCHIP	获取价格	暂无描述
MCP9805T-BE/MC	MICROCHIP	获取价格	Memory Module Digital Temperature Sensor
MCP9805T-BE/ST	MICROCHIP	获取价格	Memory Module Digital Temperature Sensor
MCP9805-TBEMC	MICROCHIP	获取价格	DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT, 2 X 3 MM, PLASTIC,
MCP9805-TBEST	MICROCHIP	获取价格	DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT, 4.40 MM, PLASTIC,

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