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參數(shù)資料
| 型號(hào)： | DS1822-PAR/T&R |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT |
| 封裝： | TO-92, 3 PIN |
| 文件頁數(shù)： | 6/19頁 |
| 文件大?。?/td> | 206K |
| 代理商： | DS1822-PAR/T&R |
DS1822-PAR
14 of 19
The DS1822-PAR samples the 1-Wire bus during a window that lasts from 15
μs to 60μs after the master
initiates the write-time slot. If the bus is high during the sampling window, a 1 is written to the DS1822-
PAR. If the line is low, a 0 is written to the DS1822-PAR.
READ/WRITE-TIME SLOT TIMING DIAGRAM Figure 12
READ-TIME SLOTS
The DS1822-PAR can only transmit data to the master when the master issues read-time slots. Therefore,
the master must generate read-time slots immediately after issuing a Read Scratchpad [BEh] command,
so that the DS1822-PAR can provide the requested data. In addition, the master can generate read-time
slots after issuing a Recall E
2 [B8h] command to find out the recall status as explained in the DS1822-
PAR FUNCTION COMMAND section.
All read-time slots must be a minimum of 60
μs in duration with a minimum of a 1μs recovery time
between slots. A read-time slot is initiated by the master device pulling the 1-Wire bus low for a
minimum of
μs and then releasing the bus (see Figure 12). After the master initiates the read-time slots,
the DS1822-PAR will begin transmitting a 1 or 0 on bus. The DS1822-PAR transmits a 1 by leaving the
bus high and transmits a 0 by pulling the bus low. When transmitting a 0, the DS1822-PAR will release
the bus by the end of the time slot, and the bus will be pulled back to its high idle state by the pullup
LINE TYPE LEGEND
Bus master pulling low
DS1822-PAR pulling low
Resistor pullup
45
μs
15
μs
VPU
GND
1-WIRE BUS
60
μs < T
X “0” < 120μs
1
μs < T
REC <
∞
DS1822-PAR samples
MIN
TYP
MAX
15
μs
30
μs
> 1
μs
MASTER WRITE “0” SLOT
MASTER WRITE “1” SLOT
DS1822-PAR samples
MIN
TYP
MAX
VPU
GND
1-WIRE BUS
15
μs
MASTER READ “0” SLOT
MASTER READ “1” SLOT
Master samples
START
OF SLOT
START
OF SLOT
> 1
μs
1
μs < T
REC <
∞
15
μs
15
μs
30
μs
15
μs
> 1
μs
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1822-PAR | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.20Cel, ROUND, THROUGH HOLE MOUNT |
| DS1822Z/T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT |
| DS1822/T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT |
| DS1822 | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT |
| DS1822+T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS-18-22-RS | 制造商:TE Connectivity 功能描述:Red sealed splice terminal,0.5-1.5sq.mm |
| DS1822-W | 制造商:Maxim Integrated Products 功能描述:1-WIRE DIGITAL THERMOMETER SOIC - Rail/Tube |
| DS1822Z | 功能描述:板上安裝溫度傳感器 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 |
| DS1822Z/T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Econo 1-Wire Digital Thermometer |
| DS1822Z/T&R | 制造商:Maxim Integrated Products 功能描述:1-WIRE DIGITAL THERMOMETER SOIC T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER ECONO DIG 8-SOIC |
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