- 您现在的位置：买卖IC网 > Datasheet目录44 > MCP9808T-E/MS (Microchip Technology)IC TEMP SENSOR DGTL I2C 8MSOP Datasheet资料下载
参数资料
| 型号： | MCP9808T-E/MS |
| 厂商： | Microchip Technology |
| 文件页数： | 13/52页 |
| 文件大小： | 1085K |
| 描述： | IC TEMP SENSOR DGTL I2C 8MSOP |
| 标准包装： | 2,500 |
| 功能： | 温度监控系统（传感器） |
| 传感器类型： | 内部 |
| 感应温度： | -40°C ~ 125°C |
| 精确度： | ±1°C |
| 拓扑： | ADC（三角积分型），寄存器库 |
| 输出类型： | 2 线串行，I²C?/SMBUS? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页当前第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页
?2011 Microchip Technology Inc.
DS25095A-page 13
MCP9808
4.0
SERIAL COMMUNICATION
4.1
2-Wire Standard Mode I
2
C"
Protocol Compatible Interface
The MCP9808 Serial Clock (SCL) input and the
bidirectional Serial Data (SDA) line form a 2-wire
bidirectional, Standard mode, I
2
C compatible
communication port (refer to the Digital Input/Output
Pin Characteristics and Sensor Serial Interface
Timing Specifications tables).
The following bus protocol has been defined:
4.1.1
DATA TRANSFER
Data transfers are initiated by a Start condition
(START), followed by a 7-bit device address and a
read/write bit. An Acknowledge (ACK) from the slave
confirms the reception of each byte. Each access must
be terminated by a Stop condition (STOP).
Repeated communication is initiated after t
B-FREE
.
This device does not support sequential register
read/write. Each register needs to be addressed using
the Register Pointer.
This device supports the receive protocol. The register
can be specified using the pointer for the initial read.
Each repeated read or receive begins with a Start
condition and address byte. The MCP9808 retains the
previously selected register. Therefore, it outputs data
from the previously specified register (repeated pointer
specification is not necessary).
4.1.2
MASTER/SLAVE
The bus is controlled by a master device (typically a
microcontroller) that controls the bus access and
generates the Start and Stop conditions. The MCP9808
is a slave device and does not control other devices in
the bus. Both master and slave devices can operate as
either transmitter or receiver. However, the master
device determines which mode is activated.
4.1.3
START/STOP CONDITION
A high-to-low transition of the SDA line (while SCL is
high) is the Start condition. All data transfers must be
preceded by a Start condition from the master. A
low-to-high transition of the SDA line (while SCL is
high) signifies a Stop condition.
If a Start or Stop condition is introduced during data
transmission, the MCP9808 releases the bus. All data
transfers are ended by a Stop condition from the
master.
TABLE 4-1:
MCP9808 SERIAL BUS
PROTOCOL DESCRIPTIONS
Term
Description
Master
The device that controls the serial bus,
typically a microcontroller.
Slave
The device addressed by the master,
such as the MCP9808.
Transmitter Device sending data to the bus.
Receiver
Device receiving data from the bus.
START
A unique signal from the master to
initiate serial interface with a slave.
STOP
A unique signal from the master to
terminate serial interface from a slave.
Read/Write A read or write to the MCP9808
registers.
ACK
A receiver Acknowledges (ACK) the
reception of each byte by polling the bus.
NAK
A receiver Not-Acknowledges (NAK) or
releases the bus to show End-of-Data
(EOD).
Busy
Communication is not possible
because the bus is in use.
Not Busy
The bus is in the Idle state; both SDA
and SCL remain high.
Data Valid SDA must remain stable before SCL
becomes high in order for a data bit to
be considered valid. During normal
data transfers, SDA only changes state
while SCL is low.
相关PDF资料 |
PDF描述 |
|---|---|
| MCZ33998EGR2 | IC REG CHARGEPUMP/LINEAR 24SOIC |
| MCZ34652EFR2 | IC HOTSWAP CTRLR 2A NEG 16SOIC |
| MCZ34653EFR2 | IC HOTSWAP CTRLR 1A NEG 8-SOIC |
| MCZ34670EG | IC POE CURR MODE SW REG 20-SOIC |
| MIC184BM TR | IC SUPERVISOR LOCAL/REMOTE 8SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP98242 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Memory Module Temperature Sensor w/EEPROM for SPD |
| MCP98242_09 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Memory Module Temperature Sensor w/EEPROM for SPD |
| MCP98242-BE/MC | 制造商:Microchip Technology Inc 功能描述:TEMP SENSOR DGTL SERL (2-WIRE, - Bulk |
| MCP98242-BE/MNY | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Memory Module Temperature Sensor w/EEPROM for SPD |
| MCP98242-BE/ST | 功能描述:板上安装温度传感器 JEDEC DIMM Serial output temp sensor 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。