DS1620S Maxim Integrated Products, DS1620S Datasheet - Page 8

• Manufacturer Part Number: DS1620S
• Description: IC THERMOMETER/STAT DIG 8-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of DS1620S

• Function: Thermometer, Thermostat
• Topology: Comparator, Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: Digital
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Full Temp Accuracy: +/- 2 C
• Digital Output - Bus Interface: Serial (3-Wire)
• Digital Output - Number Of Bits: 9 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

DS1620 COMMAND SET Table 4
NOTES:
1. In continuous conversion mode, a Stop Convert T command will halt continuous conversion. To
2. Writing to the E
Read Temperature
INSTRUCTION
Start Convert T
Stop Convert T
Read Counter
Write Config
Read Config
restart, the Start Convert T command must be issued. In one–shot mode, a Start Convert T command
must be issued for every temperature reading desired.
writes should be requested for at least 10 ms.
Read Slope
Write TH
Write TL
Read TH
Read TL
2
requires up to 10 ms at room temperature. After issuing a write command no further
DESCRIPTION
Reads last converted temperature
value from temperature register.
Reads value of count remaining
from counter.
Reads value of the slope
accumulator.
Initiates temperature conversion.
Halts temperature conversion.
Writes high temperature limit value
into TH register.
Writes low temperature limit value
into TL register.
Reads stored value of high
temperature limit from TH register.
Reads stored value of low
temperature limit from TL register.
Writes configuration data to
configuration register.
Reads configuration data from
configuration register.
TEMPERATURE CONVERSION COMMANDS
THERMOSTAT COMMANDS
8 of 12
PROTOCOL
AAh
ACh
A0h
A9h
EEh
A1h
A2h
0Ch
22h
01h
02h
DATA AFTER
3-WIRE BUS
PROTOCOL
<write data>
<write data>
<write data>
<read data>
<read data>
<read data>
<read data>
<read data>
<read data>
ISSUING
Idle
Idle
NOTES
1
1
2
2
2
2
2
2