- 您现在的位置：买卖IC网 > PDF目录22039 > ADM1027ARQ-REEL (ON Semiconductor)IC REMOTE THERMAL CTRLR 24-QSOP PDF资料下载
参数资料
| 型号： | ADM1027ARQ-REEL |
| 厂商： | ON Semiconductor |
| 文件页数： | 10/56页 |
| 文件大小： | 1822K |
| 描述： | IC REMOTE THERMAL CTRLR 24-QSOP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi Product Discontinuation Notice 25/Aug/2008 |
| 标准包装： | 2,500 |
| 系列： | dBCool® |
| 功能： | 风扇控制，温度监控器 |
| 传感器类型： | 内部和外部 |
| 感应温度： | 0°C ~ 105°C，外部传感器 |
| 精确度： | ±1°C |
| 拓扑： | ADC，比较器，风扇速度计数器，多路复用器，寄存器库 |
| 输出类型： | SMBus? |
| 输出警报： | 无 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | 0°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-QSOP |
| 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页当前第10页第11页第12页第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页第53页第54页第55页第56页
REV. A
10
ADM1027
Notes
1. It is possible to read a data byte from a data register without
first writing to the address pointer register if the address
pointer register is already at the correct value. However, it is
not possible to write data to a register without writing to the
address pointer register, because the first data byte of a write
is always written to the address pointer register.
2. In Figures 6 to 8, the serial bus address is shown as the default
value 01011(A1)(A0), where A1 and A0 are set by the address
select mode function previously defined.
3. In addition to supporting the send byte and receive byte
protocols, the ADM1027 also supports the read byte protocol
(see System Management Bus specifications Rev. 2.0 for
more information).
4. If it is required to perform several read or write operations in
succession, the master can send a repeat start condition instead
of a stop condition to begin a new operation.
ADM1027 WRITE OPERATIONS
The SMBus specification defines several protocols for different
types of read and write operations. The ones used in the
ADM1027 are discussed below. The following abbreviations are
used in the diagrams:
S START
P STOP
R READ
W WRITE
A ACKNOWLEDGE
A NO ACKNOWLEDGE
The ADM1027 uses the following SMBus write protocols:
Send Byte
In this operation, the master device sends a single command
byte to a slave device, as follows:
1. The master device asserts a start condition on SDA.
2. The master sends the 7-bit slave address followed by the
write bit (low).
3. The addressed slave device asserts ACK on SDA.
4. The master sends a command code.
5. The slave asserts ACK on SDA.
6. The master asserts a stop condition on SDA and the
transaction ends.
For the ADM1027, the send byte protocol is used to write a
register address to RAM for a subsequent single byte read from
the same address. This is illustrated in Figure 9.
S
SLAVE
ADDRESS
W A
A P
1
2
3
4
5 6
REGISTER
ADDRESS
Figure 9. Setting a Register Address for Subsequent Read
If it is required to read data from the register immediately after
setting up the address, the master can assert a repeat start con-
dition immediately after the final ACK and carry out a single
byte read without asserting an intermediate stop condition.
Write Byte
In this operation, the master device sends a command byte and
one data byte to the slave device, as follows:
1. The master device asserts a start condition on SDA.
2. The master sends the 7-bit slave address followed by the
write bit (low).
3. The addressed slave device asserts ACK on SDA.
4. The master sends a command code.
5. The slave asserts ACK on SDA.
6. The master sends a data byte.
7. The slave asserts ACK on SDA.
8. The master asserts a stop condition on SDA to end the
transaction.
This is illustrated in Figure 10.
S
SLAVE
ADDRESS
W A
1
2
3
4
5
6
A
DATA
A P
7 8
REGISTER
ADDRESS
Figure 10. Single Byte Write to a Register
ADM1027 READ OPERATIONS
The ADM1027 uses the following SMBus read protocols:
Receive Byte
This is useful when repeatedly reading a single register. The
register address needs to have been set up previously. In this
operation, the master device receives a single byte from a slave
device, as follows:
1. The master device asserts a start condition on SDA.
2. The master sends the 7-bit slave address followed by the
read bit (high).
3. The addressed slave device asserts ACK on SDA.
4. The master receives a data byte.
5. The master asserts NO ACK on SDA.
6. The master asserts a stop condition on SDA and the trans-
action ends.
In the ADM1027, the receive byte protocol is used to read a
single byte of data from a register whose address has previously
been set by a send byte or write byte operation.
S
SLAVE
ADDRESS
R A
DATA A
P
1
2
3
4
5 6
Figure 11. Single Byte Read from a Register
Alert Response Address
Alert Response Address (ARA) is a feature of SMBus devices,
which allows an interrupting device to identify itself to the host
when multiple devices exist on the same bus.
The SMBALERT output can be used as an interrupt output or
can be used as an SMBALERT. One or more outputs can be
connected to a common SMBALERT line connected to the
master. If a devices SMBALERT line goes low, the following
procedure occurs:
1. SMBALERT is pulled low.
2. Master initiates a read operation and sends the alert response
address (ARA = 0001 100). This is a general call address that
must not be used as a specific device address.
3. The device whose SMBALERT output is low responds to
the alert response address, and the master reads its device
address. The address of the device is now known and it can
be interrogated in the usual way.
4. If more than one devices SMBALERT output is low, the one
with the lowest device address will have priority, in accordance
with normal SMBus arbitration.
Rev. 3 | Page 10 of 56 | www.onsemi.com
相关PDF资料 |
PDF描述 |
|---|---|
| AGL030V2-QNG68 | IC FPGA IGLOO 1.2-1.5V 68QFN |
| AGL030V5-VQG100 | IC FPGA IGLOO 1.5V 100VQFP |
| AMC22DRTS-S93 | CONN EDGECARD 44POS DIP .100 SLD |
| F931C226KCC | CAP TANT 22UF 16V 10% 2312 |
| ADM1031ARQ-REEL | IC SENSOR 2-TEMP/FAN CTRL 16QSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1027ARQ-REEL7 | 功能描述:IC REMOTE THERMAL CTRLR 24-QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热管理 系列:dBCool® 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 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:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6 |
| ADM1027ARQSMSC | 功能描述:IC SENSOR TEMP/FAN CTRL 制造商:analog devices inc. 系列:* 零件状态:上次购买时间 标准包装:1 |
| ADM1027ARQZ | 功能描述:板上安装温度传感器 VOLT THRM MGMT CNTRLR IC 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 |
| ADM1027ARQZ-REEL | 功能描述:板上安装温度传感器 VOLT THRM MGMT CNTRLR IC 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 |
| ADM1027ARQZ-REEL7 | 功能描述:IC REMOTE THERMAL CTRLR 24QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热管理 系列:dBCool® 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 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:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6 |
发布紧急采购，3分钟左右您将得到回复。