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参数资料
| 型号： | MAX6581TG9E+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 10/27页 |
| 文件大小： | 1212K |
| 描述： | IC TEMP SENSOR 8-CH PREC 24-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 温度监控器 |
| 传感器类型： | 内部和外部 |
| 感应温度： | -64°C ~ 150°C |
| 精确度： | ±3°C 本地（最大），±2.5°C 远程（最大） |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
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10
Maxim Integrated
?癈 Accurate 8-Channel Temperature Sensor
MAX6581
SMBus Digital Interface
From a software perspective, the MAX6581 appears
as a series of 8-bit registers that contain temperature-
measurement data, alarm threshold values, and control
bits. A standard SMBus-compatible, 2-wire serial inter-
face is used to read temperature data and write control
bits and alarm threshold data. The same SMBus slave
address also provides access to all functions.
The MAX6581 employs four standard SMBus proto-
cols: write byte, read byte, send byte, and receive byte
(Figure 2). The shorter receive-byte protocol allows
quicker transfers, provided that the correct data regis-
ter was previously selected by a read-byte instruction.
Use caution with the shorter protocols in multimaster
systems, since a second master could overwrite the
command byte without informing the first master. Figure
3 is the SMBus write timing diagram and Figure 4 is the
SMBus read timing diagram.
The remote-diode-measurement channels provide
11 bits of data (1 LSB = 0.125NC). The eight most
significant bits (MSBs) can be read from the local tem-
perature and remote temperature registers. The remain-
ing 3 bits for remote can be read from the extended
temperature register. If extended resolution is desired,
the extended-resolution register should be read first.
This prevents the MSBs from being overwritten by new
conversion results until they have been read. If the MSBs
have not been read within a SMBus timeout period (nom-
inally 37ms), normal updating continues. Table 1 shows
the main temperature register (high-byte) data format
and Table 2 shows the extended-resolution register (low-
byte) data format.
Figure 2. SMBus Protocols
S
ADDRESS
WR
ACK
ACK
P
DATA
ACK
COMMAND
7 BITS
1
8 BITS
8 BITS
SLAVE ADDRESS: EQUIVALENT
TO CHIP-SELECT LINE OF
A 3-WIRE INTERFACE
DATA BYTE: DATA GOES INTO THE REGISTER
SET BY THE COMMAND BYTE (TO SET
THRESHOLDS, CONFIGURATION MASKS, AND
SAMPLING RATE)
WRITE-BYTE FORMAT
S
ADDRESS
ADDRESS
WR
ACK
ACK
P
S
RD
ACK
///
DATA
COMMAND
7 BITS
7 BITS
8 BITS
8 BITS
READ-BYTE FORMAT
SLAVE ADDRESS: EQUIVALENT
TO CHIP SELECT LINE
COMMAND BYTE: SELECTS
WHICH REGISTER YOU ARE
READING FROM
S
P
ADDRESS
WR
ACK
ACK
COMMAND
7 BITS
8 BITS
SEND-BYTE FORMAT
COMMAND BYTE: SENDS COMMAND
WITH NO DATA, USUALLY
USED FOR ONE-SHOT COMMAND
S
P
ADDRESS
RD
ACK
///
DATA
7 BITS
8 BITS
RECEIVE-BYTE FORMAT
DATA BYTE: READS DATA FROM
THE REGISTER COMMANDED
BY THE LAST READ-BYTE OR
WRITE-BYTE TRANSMISSION;
ALSO USED FOR SMBus ALERT
RESPONSE RETURN ADDRESS
SLAVE ADDRESS: REPEATED
DUE TO CHANGE IN DATA-
FLOW DIRECTION
DATA BYTE: READS FROM
THE REGISTER SET BY THE
COMMAND BYTE
S = START CONDITION
P = STOP CONDITION
SHADED = SLAVE TRANSMISSION
/// = NOT ACKNOWLEDGED
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX658CPD | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX658CSD | 制造商:Maxim Integrated Products 功能描述: |
| MAX658EPD | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX658ESD | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX658MJD | 制造商:Maxim Integrated Products 功能描述: |
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