- 您现在的位置：买卖IC网 > PDF目录19603 > MAX31826MUA+ (Maxim Integrated)IC TEMP SENSOR DIGITAL 8UMAX PDF资料下载
参数资料
| 型号： | MAX31826MUA+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 11/22页 |
| 文件大小： | 1648K |
| 描述： | IC TEMP SENSOR DIGITAL 8UMAX |
| 标准包装： | 50 |
| 系列： | 1-Wire® |
| 功能： | 温度监控系统（传感器） |
| 传感器类型： | 内部 |
| 感应温度： | -55°C ~ 125°C |
| 精确度： | ±2°C |
| 拓扑： | 寄存器库，变签式暂存器 |
| 输出类型： | 1-Wire? |
| 输出警报： | 无 |
| 输出风扇： | 无 |
| 电源电压： | 3 V ~ 3.7 V |
| 工作温度： | -55°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-uMAX |
| 包装： | 管件 |
Maxim Integrated Products 11
MAX31826
1-Wire Digital Temperature Sensor
with 1Kb Lockable EEPROM
Figure 6. Hardware Configuration
The 1-Wire bus requires an external pullup resistor of
approximately 5kI; thus, the idle state for the 1-Wire bus
is high. If for any reason a transaction needs to be sus-
pended, the bus must be left in the idle state if the transac-
tion is to resume. Infinite recovery time can occur between
bits so long as the 1-Wire bus is in the inactive (high) state
during the recovery period. If the bus is held low for more
than 480Fs, all components on the bus are reset.
Transaction Sequence
The transaction sequence for accessing the device is as
follows:
1) Step 1: Initialization
2) Step 2: ROM Command (followed by any required
data exchange)
3) Step 3: MAX31826 Function Command (followed by
any required data exchange)
It is very important to follow this sequence every time the
device is accessed, as the device does not respond if
any steps in the sequence are missing or out of order.
An exception to this rule is the Search ROM command.
After issuing this ROM command, the master must return
to step 1 in the sequence.
Initialization
All transactions on the 1-Wire bus begin with an initializa-
tion sequence. The initialization sequence consists of a
reset pulse transmitted by the bus master followed by
presence pulse(s) transmitted by the slave(s). The pres-
ence pulse lets the bus master know that slave devices
(such as the MAX31826) are on the bus and are ready
to operate. Timing for the reset and presence pulses is
detailed in the 1-Wire Signaling section.
ROM Commands
After the bus master has detected a presence pulse, it
can issue a ROM command. These commands operate
on the unique 64-bit ROM codes of each slave device
and allow the master to single out a specific device if
many are present on the 1-Wire bus. These commands
also allow the master to determine how many and what
types of devices are present on the bus. There are four
ROM commands, and each command is 8 bits long. The
master device must issue an appropriate ROM command
before issuing a MAX31826 function command. Figure 7
shows a flowchart for operation of the ROM commands.
Search ROM [F0h]
When a system is initially powered up, the master must
identify the ROM codes of all slave devices on the
bus, which allows the master to determine the number
of slaves and their device types. The master learns
the ROM codes through a process of elimination that
requires the master to perform a Search ROM cycle (i.e.,
Search ROM command followed by data exchange) as
many times as necessary to identify all the slave devices.
If there is only one slave on the bus, the simpler Read
ROM command can be used in place of the Search ROM
process. For a detailed explanation of the Search ROM
command procedure, refer to Application Note 937: Book
of iButton
?/DIV>
Standards. After every Search ROM cycle,
the bus master must return to step 1 (initialization) in the
transaction sequence.
Rx
4.7k&
5礎
TYP
V
PU
BUS MASTER
OPEN-DRAIN
PORT PIN
100& MOSFET
Tx
Rx
Tx
DQ
MAX31826 1-Wire PORT
Rx = RECEIVE
Tx = TRANSMIT
相关PDF资料 |
PDF描述 |
|---|---|
| VI-21Z-CX-F1 | CONVERTER MOD DC/DC 2V 30W |
| 180-062-213R021 | CONN DB62 FEML HD DIP SLD NICKEL |
| EZ312-8AP | BATTERY COIN ZINC AIR 1.4V 8PK |
| HWS150-24/HD | PWR SUP IND 24V 156W 6.5A |
| ABC43DREF-S734 | CONN EDGECARD 86POS .100 EYELET |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX31826MUA+ | 功能描述:板上安装温度传感器 1-Wire w/ 1Kbit EEPROM 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 |
| MAX31826MUA+T | 功能描述:板上安装温度传感器 1-Wire w/ 1Kbit EEPROM 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 |
| MAX3182EEUK | 制造商:Maxim Integrated Products 功能描述:+-15KV ESD-PROTECTED 0.5MA +3V TO - Rail/Tube |
| MAX3182EEUK+ | 制造商:Maxim Integrated Products 功能描述:LINE RCVR 1RX 5PIN SOT-23 - Rail/Tube 制造商:Maxim Integrated Products 功能描述:Single Receiver RS-232 5-Pin SOT-23 Bulk |
| MAX3182EEUK+T | 功能描述:RS-232接口集成电路 .5uA 3-5.5V 1.5Mbps RS-232 Rcvr RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
发布紧急采购，3分钟左右您将得到回复。