DS1720S Maxim Integrated Products, DS1720S Datasheet - Page 10

• Manufacturer Part Number: DS1720S
• Description: IC THERMOMETER/STAT DIG 8-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of DS1720S

• Sensing Temperature: -55°C ~ 125°C
• Output Type: Digital
• Voltage - Supply: 2.7 V ~ 5.5 V
• Accuracy: ±2.5°C
• Package / Case: 8-SOIC (0.200", 5.30mm Width)
• Full Temp Accuracy: +/- 2.5 C
• Digital Output - Bus Interface: Serial (3-Wire)
• Digital Output - Number Of Bits: 12 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Dc: 0538
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

FUNCTION EXAMPLE
Example: CPU sets up DS1720 for continuous conversion and thermostatic function.
CPU MODE
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
RX
TX
TX
RX
TX
TX
TX
DS1720 MODE
(3-WIRE)
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
TX
RX
TX
RX
DATA (LSB FIRST)
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
0050h
0014h
0050h
0014h
A1h
A2h
EEh
0Ch
00h
01h
02h
10 of 14
RST
RST
RST
RST
RST
RST
TCPU issues Write Config command
CPU sets DS1720 up for continuous
conversion
CPU issues Reset to DS1720
CPU issues Write T
CPU sends data for T
CPU issues Reset to DS1720
CPU issues Write T
CPU sends data for T
CPU issues Reset to DS1720
CPU issues Read T
DS1720 sends back stored value of T
for CPU to verify
CPU issues Reset to DS1720
CPU issues Read T
DS1720 sends back stored value of T
for CPU to verify
RST CPU issues Reset to DS1720
CPU issues Start Convert T command
CPU issues Reset to DS1720
COMMENTS
H
L
H
L
command
command
H
command
L
command
limit of +10°C
limit of +40°C
DS1720
H
L