DS620U+T&R Maxim Integrated Products, DS620U+T&R Datasheet - Page 15

• Manufacturer Part Number: DS620U+T&R
• Description: IC THERMOMETER/STAT DIG 8MSOP
• Manufacturer: Maxim Integrated Products

Specifications of DS620U+T&R

• Function: Thermometer, Thermostat
• Topology: ADC (Sigma Delta), Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: No
• Output Fan: No
• Voltage - Supply: 1.7 V ~ 3.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP Exposed Pad, 8-HMSOP, 8-eMSOP
• Full Temp Accuracy: +/- 2 C
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 13 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Configuring from 1SHOT to mode to continuous conversion mode.
MASTER
MODE
BUS
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
DS620
MODE
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
<address, 0>
<address, 0>
<address, 0>
<address, 0>
xxxxxxx0b
FIRST)
START
START
START
START
DATA
STOP
(MSB
STOP
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACh
51h
48h
ACK
ACK
ACK
22h
Bus master initiates a START condition.
Bus master sends DS620 address, R/W = 0.
DS620 generates acknowledge bit.
Bus master sends the address location of the MSb of
the configuration register (contains the 1SHOT bit).
This writes to the SRAM location corresponding the
EEPROM location.
DS620 generates acknowledge.
Bus master writes to the configuration register putting
the DS620 in continuous conversion mode: 1SHOT =
0.
DS620 generates acknowledge.
Bus master generates a repeated start condition.
Bus master sends DS620 address, R/W = 0.
DS620 generates acknowledge.
Master sends START CONVERT command to DS620
to start temperature conversions.
DS620 generates acknowledge bit and begins
conversions.
Bus master generates a repeated start condition.
Bus master sends DS620 address, R/W = 0.
DS620 generates acknowledge.
Master sends COPY DATA command to DS620 to
copy data in from SRAM memory to EEPROM
memory.
DS620 generates acknowledge.
Bus master sends STOP condition to end
communication with DS620. (The bus master could
send a repeated start condition if additional
communication with the DS620 is desired.)
DS620 generates acknowledge.
Bus master generates a repeated start condition.
Bus master sends DS620 address, R/W = 0.
DS620 generates acknowledge.
Bus master sends STOP CONVERT command to
stop the DS620 from continuously converting
temperature. NOTE: Bus master should ensure that
EEPROM copy operation is complete before
executing the STOP CONVERT command by either
waiting 10ms from the time of the COPY DATA
command or checking the NVB bit in configuration
register
DS620 generates acknowledge.
Bus master sends STOP condition to end
communication with DS620. (The bus master could
send a repeated start condition if additional
communication with the DS620 is desired.)
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COMMENTS
SEQUENCE
NUMBER
17
18
19
20
21
22
23
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9