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参数资料
| 型号： | LM99 |
| 厂商： | National Semiconductor Corporation |
| 元件分类： | 温度/湿度传感器 |
| 英文描述： | 【1C Accurate, High Temperature, Remote Diode Temperature Sensor with Two-Wire Interface |
| 中文描述： | 【集成电路准确，高温，远程二极管温度传感器，两线接口 |
| 文件页数： | 8/20页 |
| 文件大小： | 349K |
| 代理商： | LM99 |
2.0 LM99 Registers (Continued)
2.4 CONFIGURATION REGISTER
(Read Address 03h / Write Address 09h):
D7
D6
D5
D4
D3
D2
D1
D0
ALERT mask
RUN/STOP
0
Remote T_CRIT_A
mask
0
Local T_CRIT_A
mask
0
Fault Queue
Power up default is with all bits “0” (zero)
D7: ALERT mask: When set to “1” ALERT interrupts are masked.
D6: RUN/STOP: When set to “1” SHUTDOWN is enabled.
D5: is not defined and defaults to “0”.
D4: Remote T_CRIT_A mask: When set to “1” a diode temperature reading that exceeds T_CRIT_A setpoint will not activate the
T_CRIT_A pin.
D3: is not defined and defaults to “0”.
D2: Local T_CRIT_A mask: When set to “1” a Local temperature reading that exceeds T_CRIT_A setpoint will not activate the
T_CRIT_A pin.
D1: is not defined and defaults to “0”.
D0: Fault Queue: when set to “1” three consecutive remote temperature measurements outside the HIGH, LOW, or T_CRIT
setpoints will trigger an “Outside Limit” condition resulting in setting of status bits and associated output pins..
2.5 CONVERSION RATE REGISTER
(Read Address 04h / Write Address 0Ah)
Value
Conversion Rate
00
62.5 mHz
01
125 mHz
02
250 mHz
03
500 mHz
04
1 Hz
05
2 Hz
(Read Address 04h / Write Address 0Ah)
Value
Conversion Rate
06
4 Hz
07
8 Hz
08
16 Hz
09
32 Hz
10-255
Undefined
2.6 LOCAL and REMOTE HIGH SETPOINT REGISTERS (LHS, RHSHB, and RHSLB)
(Read Address 05h, 07h / Write Address 0Bh, 0Dh):
BIT
D7
D6
D5
D4
D3
D2
D1
D0
Value
SIGN
64
32
16
8
4
2
1
For LHS and RHSHB: HIGH setpoint temperature data. Power-on default is LHIGH = RHIGH = 70C. 1 LSB = 1C. Two’s
complement format.
(Read / Write Address 13h):
BIT
D7
D6
D5
D4
D3
D2
D1
D0
Value
0.5
0.25
0.125
0000
0
For RHSLB: Remote HIGH Setpoint Low Byte temperature data. Power–on default is 0C. 1 LSB = 0.125C. Two’s complement
format.
2.7 LOCAL and REMOTE LOW SETPOINT REGISTERS (LLS, RLSHB, and RLSLB)
(Read Address 06h, 08h, / Write Address 0Ch, 0Eh):
BIT
D7
D6
D5
D4
D3
D2
D1
D0
Value
SIGN
64
32
16
8
4
2
1
For LLS and RLSHB: HIGH setpoint temperature data. Power-on default is LHIGH = RHIGH = 0C. 1 LSB = 1C. Two’s
complement format.
(Read / Write Address 14h):
BIT
D7
D6
D5
D4
D3
D2
D1
D0
Value
0.5
0.25
0.125
0000
0
For RLSLB: Remote HIGH Setpoint Low Byte temperature data. Power-on default is 0C. 1 LSB = 0.125C. Two’s complement
format.
LM99
www.national.com
16
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