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DS18S20-PAR+T&R 其他数据使用手册 - Maxim Integrated（美信）
制造商:
Maxim Integrated（美信）
分类:
温度传感器
封装:
TO-92-3
描述:
板上安装温度传感器 Prgmble Resolution 1-Wire Parasite Pwr
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DS18S20-PAR+T&R数据手册
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FEATURES
· Unique 1-Wire
®
interface requires only one
port pin for communication
· Derives power from data line (“parasite
power”)—does not need a local power supply
· Multi-drop capability simplifies distributed
temperature sensing applications
· Requires no external components
· ±0.5°C accuracy from –10°C to +85°C
· Measures temperatures from –55°C to
+100°C (–67°F to +212°F)
· 9-bit thermometer resolution
· Converts temperature in 750 ms (max.)
· User–definable non-volatile temperature
alarm settings
· Alarm search command identifies and
addresses devices whose temperature is
outside of programmed limits (temperature
alarm condition)
· Ideal for use in remote sensing applications
(e.g., temperature probes) that do not have a
local power source
PIN ASSIGNMENT
PIN DESCRIPTION
GND - Ground
DQ - Data In/Out
NC - No Connect
DESCRIPTION
The DS18S20-PAR digital thermometer provides 9–bit centigrade temperature measurements and has an
alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18S20-PAR
does not need an external power supply because it derives power directly from the data line (“parasite
power”). The DS18S20-PAR communicates over a 1-Wire bus, which by definition requires only one
data line (and ground) for communication with a central microprocessor. It has an operating temperature
range of –55°C to +100°C and is accurate to ±0.5°C over a range of –10°C to +85°C.
Each DS18S20-PAR has a unique 64-bit identification code, which allows multiple DS18S20-PARs to
function on the same 1–wire bus; thus, it is simple to use one microprocessor to control many
DS18S20-PARs distributed over a large area. Applications that can benefit from this feature include
HVAC environmental controls, temperature monitoring systems inside buildings, equipment or
machinery, and process monitoring and control systems.
DS18S20-PAR
1-Wire Parasite-Powe
r
Digital Thermomete
r
www.maxim
-
ic.com
TO-92
(
DS18S20-PAR
)
1
(
BOTTOM VIEW
)
23
DALLAS
18S20P
1
GND
DQ
NC
23
1-Wire is a registered trademark of Dallas Semiconductor.
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