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參數(shù)資料
| 型號(hào)： | LM99CIMM |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | 【1C Accurate, High Temperature, Remote Diode Temperature Sensor with Two-Wire Interface |
| 中文描述： | 【集成電路準(zhǔn)確，高溫，遠(yuǎn)程二極管溫度傳感器，兩線接口 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 349K |
| 代理商： | LM99CIMM |
2.0 LM99 Registers
(Continued)
Command Select Address
Read Address
<
P7:P0
>
hex
10h
11h
Power On Default State
<
D7:D0
>
binary
Register
Name
Register Function
Write Address
<
P7:P0
>
hex
NA
11h
<
D7:D0
>
decimal
0
0
0000 0000
0000 0000
RTLB
RTOHB
Remote Temperature Low Byte
Remote Temperature Offset
High Byte
Remote Temperature Offset
Low Byte
Remote HIGH Setpoint Low
Byte
Remote LOW Setpoint Low
Byte
Remote T_CRIT Setpoint
Local T_CRIT Setpoint
T_CRIT Hysteresis
Manufacturers Test Registers
Remote Diode Temperature
Filter
Read Manufacturer’s ID
Read Stepping or Die Revision
Code
12h
12h
0000 0000
0
RTOLB
13h
13h
0000 0000
0
RHSLB
14h
14h
0000 0000
0
RLSLB
19h
20h
21h
19h
20h
21h
0110 1110
0101 0101
0000 1010
110
85
10
RCS
LCS
TH
B0h-BEh
BFh
B0h-BEh
BFh
0000 0000
0
RDTF
FEh
FFh
NA
NA
0000 0001
LM99 0011 0001
LM99-1 0011 0100
1
49
52
RMID
RDR
2.2 LOCAL and REMOTE TEMPERATURE REGISTERS (LT, RTHB, RTLB)
(Read Only Address 00h, 01h):
BIT
Value
D7
SIGN
D6
64
D5
32
D4
16
D3
8
D2
4
D1
2
D0
1
For LT and RTHB D7–D0: Temperature Data. LSB = 1C. Two’s complement format.
(Read Only Address 10h):
BIT
Value
D7
0.5
D6
0.25
D5
0.125
D4
0
D3
0
D2
0
D1
0
D0
0
For RTLB D7–D5: Temperature Data. LSB = 0.125C. Two’s complement format.
The maximum value available from the Local Temperature register is 127; the minimum value available from the Local
Temperature register is -128. The maximum value available from the Remote Temperature register is 127.875; the minimum value
available from the Remote Temperature registers is 128.875.
Note that the remote diode junction temperature is actually 16C higher than the Remote Temperature Register value.
2.3 STATUS REGISTER (SR)
(Read Only Address 02h):
D7
Busy
D6
D5
D4
D3
D2
D1
D0
LHIGH
LLOW
RHIGH
RLOW
OPEN
RCRIT
LCRIT
Power up default is with all bits “0” (zero).
D0: LCRIT: When set to “1” indicates a Local Critical Temperature alarm.
D1: RCRIT: When set to “1” indicates a Remote Diode Critical Temperature alarm.
D2: OPEN: When set to “1” indicates a Remote Diode disconnect.
D3: RLOW: When set to “1” indicates a Remote Diode LOW Temperature alarm
D4: RHIGH: When set to “1” indicates a Remote Diode HIGH Temperature alarm.
D5: LLOW: When set to “1” indicates a Local LOW Temperature alarm.
D6: LHIGH: When set to “1” indicates a Local HIGH Temperature alarm.
D7: Busy: When set to “1” ADC is busy converting.
L
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15
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