DS18B20-PAR+T&R Maxim Integrated Products, DS18B20-PAR+T&R Datasheet - Page 12

• Manufacturer Part Number: DS18B20-PAR+T&R
• Description: IC THERM MICROLAN PROG-RES TO-92
• Manufacturer: Maxim Integrated Products

Specifications of DS18B20-PAR+T&R

• Function: Thermometer, Thermostat
• Topology: Register Bank, Scratchpad
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 100°C
• Output Type: 1-Wire®
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -55°C ~ 100°C
• Mounting Type: Through Hole
• Package / Case: TO-92-3 (Standard Body), TO-226
• Full Temp Accuracy: +/- 2 C
• Digital Output - Bus Interface: Serial (1-Wire)
• Digital Output - Number Of Bits: 12 bit
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS18B20-PAR FUNCTION COMMANDS FLOW CHART Figure 11
MASTER T
COMMAND
FUNCTION
N
X
RECALL FROM E
MASTER BEGINS DATA
BUSY RECALLING
RECALL E
MASTER
DEVICE
R
Y
DATA
B8h
X
?
?
“0s”
Y
2
2
PROM
DS18B20-PAR CONVERTS
STRONG PULLUP ON DQ
MASTER DISABLES
MASTER ENABLES
STRONG PULLUP
TEMPERATURE
TEMPERATURE
N
CONVERT
MASTER
R
44h
X
?
“1s”
SEQUENCE (FIGURE 10) FOR
Y
RETURN TO INITIALIZATION
NEXT TRANSACTION
N
12 of 19
N
MASTER R
N
MASTER R
FROM SCRATCHPAD
SCRATCHPAD
HAVE 8 BYTES
BEEN READ
CRC BYTE
T
MASTER
X
READ
X
RESET
BEh
X
SCRATCHPAD
?
?
?
DATA BYTE
Y
N
Y
Y
SCRATCHPAD TO EEPROM
STRONG PULL-UP ON DQ
DATA COPIED FROM
MASTER DISABLES
MASTER ENABLES
STRONG PULLUP
SCRATCHPAD
COPY
48h
MASTER T
?
N
MASTER T
MASTER T
Y
TO SCRATCHPAD
TO SCRATCHPAD
TO SCRATCHPAD
SCRATCHPAD
X
WRITE
CONFIG. BYTE
4Eh
N
?
X
X
T
T
Y
H
L
BYTE
BYTE
DS18B20-PAR