DS620U+ Maxim Integrated Products, DS620U+ Datasheet - Page 14

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

Specifications of DS620U+

• 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
• Temperature Threshold: Programmable
• Full Temp Accuracy: +/- 0.5 C
• Digital Output - Bus Interface: 2-Wire, SMBus
• Digital Output - Number Of Bits: 10 bit to 13 bit
• Supply Voltage (max): 3.5 V
• Supply Voltage (min): 1.7 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Supply Current: 800 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WRITING THE 1SHOT BIT COMMAND SEQUENCE
Configuring from continuous mode to 1SHOT mode.
MASTER
MODE
BUS
RX
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
TX
TX
TX
DS620
MODE
RX
RX
RX
RX
RX
RX
RX
RX
TX
TX
TX
TX
TX
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
TX
TX
TX
TX
TX
TX
<address, 0>
<address, 0>
(MSB FIRST)
<address, 0>
<address, 0>
<address, 0>
xxxxxxx1b
xxxxxxx1b
START
START
STOP
START
START
START
ACK
ACK
ACK
ACK
ACK
DATA
48h
22h
ACK
ACK
ACK
ACK
ACK
ACK
ACh
51h
48h
DS620 generates acknowledge.
Bus master writes to the configuration register putting
the DS620 back in 1SHOT mode: 1SHOT = 1.
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 generates a repeated start condition.
Bus master sends DS620 address, R/W = 0.
DS620 generates acknowledge.
Bus master sends a 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.)
Bus master initiates a START condition.
Bus master sends DS620 address, R/W = 0.
DS620 generates acknowledge bit.
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.
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 1SHOT mode: 1SHOT = 1.
DS620 generates acknowledge.
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.
14 of 15
COMMENTS
SEQUENCE
NUMBER
30
31
32
33
34
35
36
37
38
39
40
41
42
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9