PCT2075DP,118(2013) 查看數據表（PDF） - NXP Semiconductors.
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PCT2075DP,118
(Rev.:2013)
(Rev.:2013)
NXP Semiconductors.
PCT2075DP,118 Datasheet PDF : 37 Pages
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NXP Semiconductors
PCT2075
I2C-bus Fm+ digital temperature sensor and thermal watchdog
7.2.1 Bus fault time-out
If the SDA line is held LOW for longer than tto (25 ms minimum; guaranteed at 35 ms
maximum), the device will reset to the idle state (SDA released) and wait for a new START
condition. This ensures that the device will never hang up the bus should there be
conflicts in the transmission sequence. The bus fault time-out can be disabled during
manufacture and shipped under custom part number.
7.3 Slave address
To communicate with the device, the master must first address slave devices via a slave
address byte. The slave address byte consists of seven address bits, and a direction bit
indicating the intent of executing a read or write operation. The device features three
address pins to allow up to 27 devices to be addressed on a single bus interface. Table 5
describes the pin logic levels used to properly connect up to 27 8-pin devices. Table 6
describes the pin logic levels used to properly connect up to three 6-pin devices.
‘1’ indicates the pin is connected to the supply (VCC); ‘0’ indicates the pin is connected to
GND; ‘Float’ indicates the pin is left unconnected. The states of pins A0/A1/A2 are
sampled only at power-up. After sampling the address is latched to minimize power
dissipation associated with detection.
Table 5.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
PCT2075 address table (SO8, TSSOP8, HWSON8 packages)
Address pin coding
Slave address
A2
A1
A0
0
0
0
1001 000
0
0
1
1001 001
0
1
0
1001 010
0
1
1
1001 011
1
0
0
1001 100
1
0
1
1001 101
1
1
0
1001 110
1
1
1
1001 111
floating
0
0
1110 000
floating
0
floating 1110 001
floating
0
1
1110 010
floating
1
0
1110 011
floating
1
floating 1110 100
floating
1
1
1110 101
floating
floating
0
1110 110
floating
floating
1
1110 111
0
floating
0
0101 000
0
floating
1
0101 001
1
floating
0
0101 010
1
floating
1
0101 011
0
0
floating 0101 100
0
1
floating 0101 101
1
0
floating 0101 110
PCT2075
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 19 July 2013
© NXP B.V. 2013. All rights reserved.
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