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參數資料
| 型號： | TMP435ADGST |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO10 |
| 封裝： | GREEN, PLASTIC, MSOP-10 |
| 文件頁數： | 11/31頁 |
| 文件大小： | 477K |
| 代理商： | TMP435ADGST |
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SBOS495A – MARCH 2010 – REVISED APRIL 2010
Consecutive Alert Register
does not trip on the measured temperature falling
edges. Allowable hysteresis values are shown in
The value in the Consecutive Alert Register (address
Table 11. The default hysteresis value is 10°C,
22h) determines how many consecutive out-of-limit
whether the device is operating in the standard or
measurements
must
occur
on
a
measurement
extended mode setting.
channel before the ALERT/THERM2 or the THERM
signal is activated. The value in this register does not
Identification Registers
affect bits in the Status Register. Values of one, two,
three, or four consecutive conversions can be
The TMP435 allows for the two-wire bus controller to
selected; one conversion is the default. This function
query the device for manufacturer and device IDs to
allows additional filtering for the ALERT/THERM2 or
enable the device for software identification of the
the THERM pin. Table 13 shows the consecutive
device at the particular two-wire bus address. The
alert bits. For bit descriptions, refer to Table 10.
manufacturer ID is obtained by reading from pointer
address FEh. The TMP435 returns 55h for the
Table 10. Consecutive Alert Register Bit
manufacturer code. The device ID is obtained by
Descriptions
reading from pointer address FDh. The TMP435
returns 31h for the device ID (see Table 3). These
BIT NAME
NUMBER OF
registers are read-only.
CONSECUTIVE
OUT-OF-LIMIT
MEASUREMENTS
Table 11. Allowable THERM Hysteresis Values
CALT2/CTH2 CALT1/CTH1 CALT0/CTH0
(ALERT/THERM)
THERM HYSTERESIS VALUE
0
1
TH[7:0]
0
1
2
TEMPERATURE
(STANDARD
0
1
3
(°C)
BINARY)
(HEX)
1
4
0
0000 0000
00
1
0000 0001
01
space.
5
0000 0101
05
10
0000 1010
0A
Therm Hysteresis Register
25
0001 1001
19
The THERM Hysteresis Register, shown in Table 12,
50
0011 0010
32
stores the hysteresis value used for the THERM pin
75
0100 1011
4B
alarm function and for the ALERT/THERM2 pin when
the AL/TH is 1. This register must be programmed
100
0110 0100
64
with a value that is less than the Local Temperature
125
0111 1101
7D
High Limit Register value, Remote Temperature High
127
0111 1111
7F
Limit Register value, Local THERM Limit Register
150
1001 0110
96
value, or Remote THERM Limit Register value;
175
1010 1111
AF
otherwise, the respective temperature comparator
200
1100 1000
C8
225
1110 0001
E1
255
1111 1111
FF
Table 12. THERM Hysteresis Register Format
THERM HYSTERESIS REGISTER
(Read = 21h, Write = 21h, POR = 0Ah)
BIT #
D7
D6
D5
D4
D3
D2
D1
D0
BIT NAME
TH7
TH6
TH5
TH4
TH3
TH2
TH1
TH0
POR VALUE
0
1
0
1
0
Table 13. Consecutive Alert Register Format
CONSECUTIVE ALERT REGISTER
(READ = 22h, WRITE = 22h, POR = 70h)
BIT #
D7
D6
D5
D4
D3
D2
D1
D0
BIT NAME
0
CTH2
CTH1
CTH0
CALT2
CALT1
CALT0
0
POR VALUE
0
1
0
Copyright 2010, Texas Instruments Incorporated
19
Product Folder Link(s): TMP435
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