參數資料
型號： THMC50SSOPDBQ
廠商： Texas Instruments, Inc.
英文描述： KPT 55C 55#20 SKT RECP
中文描述： 遠程/本地溫度監(jiān)視器和通風機的SMBus接口控制器
文件頁數： 20/32頁
文件大?。?/td> 437K
代理商： THMC50SSOPDBQ
THMC50
REMOTE/LOCAL TEMPERATURE MONITOR AND
FAN CONTROLLER WITH SMBus INTERFACE
SLIS090 – JULY 1999
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
THERM operation (continued)
Temperature
5
°
C
FAN_SPD/NTEST_IN
0xFF
0xFF
Programmed
value
External
THERM
input
THERM
FAN_OFF
FAN_OFF
commanded
low by user
5
°
C Hysteresis
THERM goes low after three
consecutive readings that exceed
the trip point, and stays low until
three consecutive readings that
are at least 5
°
C below the trip
point.
Default or
Programmable
THERM Limit
FAN_SPD/NTEXT_IN goes to full
scale (0xFF) whenever THERM is
asserted internally or externally,
returns to previously programmed
value once THERM is cleared.
FAN_OFF floats
high due to THERM
Figure 16. Examples of THMC50 THERM Event Behavior
temperature data format
Temperature data can be read from the remote diode temperature register or the ambient temperature register
in the value RAM (locations 0x26 and 0x27, respectively). Temperature data is represented by an 8-bit, 2s
complement word with an LSB equal to 1
°
C as shown in Table 2.
Table 2. T
emperature Data Format
TEMPERATURE
DIGITAL OUTPUT
BINARY
HEX
125
°
C
25
°
C
1
°
C
0
°
C
–1
°
C
–25
°
C
–55
°
C
0111 1101
0x7D
0001 1001
0x19
0000 0001
0x01
0000 0000
0x00
1111 1111
0xFF
1110 0111
0xE7
1100 1001
0xC9
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