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TMP139AIYAHT Datasheet(PDF) 16 Page - Texas Instruments

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Part # TMP139AIYAHT
Description  TMP139 0.5 째C Accuracy, JEDEC DDR5 Grade B, Digital Temperature Sensor With I2C and I3C Interface
PDF  58 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TMP139AIYAHT Datasheet(HTML) 16 Page - Texas Instruments

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Data(DEF_ADDR_POINTER)
Data(DEF_ADDR_POINTER+1)
ACK/NACK
ACK
ACK
...
ACK
S
0
SA
1
0
HID2
HID1
HID0
R/W=1
Data(DEF_ADDR_POINTER+N)
Sr or P
NACK
S or Sr
0
SA
1
0
HID2
HID1
HID0
R/W=0
RA = Register Address [7:0]
ACK/NACK
Data(RA)
Data(RA+1)
ACK/NACK
ACK
ACK
ACK
...
ACK
Sr
0
SA
1
0
HID2
HID1
HID0
R/W=1
Data(RA+N)
P
NACK
Figure 7-9. I2C normal read followed by a Default Read Address
In the second case as shown in Figure 7-10, there is a normal I2C write preceding the default read mode. If there
is a Stop, followed by a write bus operation and then a Repeated Start for the read mode, then the TMP139 shall
update its internal read address pointer to the default read address and transmit bytes to the host.
Data(DEF_ADDR_POINTER)
Data(DEF_ADDR_POINTER+1)
ACK/NACK
ACK
ACK
...
ACK
Sr
0
SA
1
0
HID2
HID1
HID0
R/W=1
Data(DEF_ADDR_POINTER+N)
Sr or P
NACK
S
0
SA
1
0
HID2
HID1
HID0
R/W=0
RA = Register Address [7:0]
ACK/NACK
Data(RA)
Data(RA+1)
...
ACK
ACK
ACK
ACK
Data(RA+N)
ACK
P
Figure 7-10. I2C normal write followed by a Default Read Address
7.4.3.4 Switching from I2C Mode to I3C Basic Mode
As shown in Table 7-6, only DEVCTRL, SETHID and SETAASA CCCs are supported in I2C mode. The host may
issue DEVCTRL and/or SETHID, before it can issue SETAASA for switching the device from I2C mode to I3C
basic mode.
When the SETAASA is issued by the host, the device shall register the command by setting MR18 register
INF_SEL bit to 1'b1 once the Stop condition on the bus is detected. After this, the TMP139 shall be in the I3C
basic mode of operation.
TMP139
SNIS217 – DECEMBER 2020
www.ti.com
16
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Product Folder Links: TMP139



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