THERMOMETER MODULE DS18B20 Digital Temperature Sensor  (Itead IM120710012)

Specifications

PCB size	33.2mm X 14.0mm X 1.6mm
Working voltage	3.3 or 5V DC
Operating voltage	3.3 or 5V DC
Measurable range	-55~+125℃
Measurement resolution	9~12bits（programmable）
Compatible interfaces	2.54 3-pin interface and 4-pin Grove interface(1)

Note 1：  S for digital input/output port, V and G for voltage at the common collector and ground respectively

DC electrical characteristics

Parameter		Min.	Typical	Max.	Unit
Working voltage		3	5	5.5	VDC
Working current（VCC=5V，T=25℃）		-	1	1.5	mA
Sampling interval		1	-	-	s
Accuracy	-10~+85℃	-	-	±0.5	℃
	-55~+125℃	-	-	±2	℃
Logic input low level VIL		-0.3	-	+0.8	V
Logic input high level VIH		2.2	-	5.5/VCC+0.3	V

AC electrical characteristics

Parameter		Min.	Typical	Max.	Unit
Temperature conversion time tCONV	9-bit accuracy	-	-	93.75	ms
	10-bit accuracy	-	-	187.5	ms
	11-bit accuracy	-	-	375	ms
	12-bit accuracy	-	-	750	ms
Time for strong pullup on tSPON		-	-	10	us
Time slot tSLOT		60	-	120	us
Recovery time tREC		1	-	-	us
Write 0 low time tLOW0		60	-	120	us
Write 1 low time tLOW1		1	-	15	us
Read data valid tRDV		-	-	15	us
Reset time high tRSTH		480	-	-	us
Reset time low tRSTL		480	-	-	us
Presence-detect high tPDHIGH		15	-	60	us
Presence-detect low tPDLOW		60	-	240	us
Capacitance CIN/OUT		-	-	25	pF

Instruction

Each DS18B20 has a unique 64-bit serial code, which allows multiple DS18B20s to function on the same 1-Wire bus. The figure below shows a block diagram of DS18B20. The scratchpad memory contains the 2-byte temperature register that stores the datal output from the temperature sensor. In addition, the scratchpad provides access to direct temperature alarm trigger registers (TH and TL) and the 1-byte configuration register. The configuration register allows the user to set the resolution of the temperature-to-digital conversion to 9, 10, 11, or 12 bits. The TH, TL, and configuration registers are nonvolatile (EEPROM), so they will retain data when the device is powered down.

 

SCH_IM120710012.pdf

DS_IM120710012.pdf

DEMO_IM120710012.zip