參數(shù)資料
型號(hào): MCP9808T-E/MS
廠商: Microchip Technology
文件頁(yè)數(shù): 13/52頁(yè)
文件大?。?/td> 1085K
描述: IC TEMP SENSOR DGTL I2C 8MSOP
標(biāo)準(zhǔn)包裝: 2,500
功能: 溫度監(jiān)控系統(tǒng)(傳感器)
傳感器類型: 內(nèi)部
感應(yīng)溫度: -40°C ~ 125°C
精確度: ±1°C
拓?fù)洌?/td> ADC(三角積分型),寄存器庫(kù)
輸出類型: 2 線串行,I²C?/SMBUS?
輸出警報(bào):
輸出風(fēng)扇:
電源電壓: 2.7 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 8-TSSOP,8-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 8-MSOP
包裝: 帶卷 (TR)
?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.
相關(guān)PDF資料
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP98242 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Memory Module Temperature Sensor w/EEPROM for SPD
MCP98242_09 制造商:MICROCHIP 制造商全稱: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 制造商全稱:Microchip Technology 功能描述:Memory Module Temperature Sensor w/EEPROM for SPD
MCP98242-BE/ST 功能描述:板上安裝溫度傳感器 JEDEC DIMM Serial output temp sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor