參數(shù)資料
型號: ADM1029ARQZ-R7
廠商: ON Semiconductor
文件頁數(shù): 13/50頁
文件大?。?/td> 402K
描述: IC SENSOR 2TEMP/FAN CTRL 24QSOP
產(chǎn)品變化通告: QSOP 24ld Pkg (MSL) Change 17/Jun/2010
標準包裝: 1,000
功能: 風扇控制,溫度監(jiān)控器
傳感器類型: 內(nèi)部和外部
感應溫度: 0°C ~ 100°C,外部傳感器
精確度: ±1°C 本地,±3°C 遠程
拓撲: ADC,風扇控制,寄存器庫
輸出類型: 開路漏極
輸出警報:
輸出風扇:
電源電壓: 3 V ~ 5.5 V
工作溫度: 0°C ~ 100°C
安裝類型: 表面貼裝
封裝/外殼: 24-SSOP(0.154",3.90mm 寬)
供應商設備封裝: 24-QSOP
包裝: 帶卷 (TR)
ADM1029
http://onsemi.com
13
expects to see a fan interfaced to it. It does not necessarily
mean that the fan is actually, physically, connected.
If a fan is installed, events such as a fault output and
hot-swapping of the fan can cause INT
 and CFAULT
 to be
asserted, unless they are masked for that particular event. If
a fan is not installed, but is still physically connected to the
ADM1029, these events will be ignored with respect to
asserting INT
 or CFAULT
, but will still be reflected in the
corresponding Fan Status Register.
Setting Bit 0 indicates that Fan 1 is installed and is set to
1 at power-up by default. Setting Bit 1 indicates that Fan 2
is   installed   and   depends   on   the   state   of   Pin 18
(TMIN/INSTALL) at power-up.
Figure 23. Temperature Sensing Flowchart
DEFAULTS
LOCAL = 605C
REMOTE 1 = 705C
REMOTE 2 = 705C
CONFIGURE
TEMPERATURE LOW
LIMITS
LOCAL (REG 0X98)
REMOTE 1 (REG 0X99)
REMOTE 2 (REG 0X9A)
BIT 0 = 1
ASSERT CFAULT
 ON OVER-TEMPERATURE
BIT 1 = 1
RUN FAN(S) ALARM SPEED ON OVER-TEMPERATURE
BIT 2 = 1
ASSERT INT
 ON OVER-TEMPERATURE
BIT 3 = 0
ALARM BELOW LOW TEMP LIMIT
BIT 3 = 1
ALARM ABOVE LOW TEMP LIMIT
BIT 4 = 1
ASSERT CFAULT
 WHEN LOW TEMP LIMIT CROSSED
BIT 5 = 1
RUN FAN ALARM SPEED ON UNDER-TEMPERATURE
BIT 6 = 1
ASSERT INT
 ON UNDER-TEMPERATURE
BIT 7
LATCHES A TEMPERATURE OUT-OF-LIMIT EVENT
DEFAULTS
LOCAL = 805C
REMOTE 1 = 1005C
REMOTE 2 = 1005C
CONFIGURE
TEMPERATURE HIGH
LIMITS
LOCAL (REG 0X90)
REMOTE 1 (REG 0X91)
REMOTE 2 (REG 0X92)
CONFIGURE
TEMPERATURE FAULT
ACTION
LOCAL (REG 0X40)
REMOTE 1 (REG 0X41)
REMOTE 2 (REG 0X42)
CONFIGURE
TEMPERATURE COOLING
ACTION
LOCAL (REG 0X48)
REMOTE 1 (REG 0X49)
REMOTE 2 (REG 0X4A)
DEFAULTS
LOCAL = 05C
REMOTE 1 = 05C
REMOTE 2 = 05C
CONFIGURE
TEMPERATURE OFFSETS
LOCAL (REG 0X30)
REMOTE 1 (REG 0X31)
REMOTE 2 (REG 0X32)
MEASURE
TEMPERATURE
LOCAL (REG 0XA0)
REMOTE 1 (REG 0XA1)
REMOTE 2 (REG 0XA2)
0
1
2
3
4
5
6
7
BIT 0 = 1
FAN 1 RUNS AT ALARM SPEED FOR OUT-OF-LIMIT TEMPERATURE EVENTS;
OTHERWISE, FAN 1 RUNS AT SPEED DETERMINED BY AUTOMATIC FAN CONTROL
BIT 1 = 1
FAN 2 RUNS AT ALARM SPEED FOR OUT-OF-LIMIT TEMPERATURE EVENTS;
OTHERWISE, FAN 2 RUNS AT SPEED DETERMINED BY AUTOMATIC FAN CONTROL
AUTOMATIC FAN SPEED CONTROL (SEE TABLE 15 LATER)
X
X
X
X
X
X
1
0
IS
TEMPERATURE
>
HIGH LIMIT?
CFAULT
FANS RUN
ALARM SPEED
YES
YES
YES
YES
YES
YES
INT
0 = ALARM BELOW TEMP LIMIT
1 = ALARM ABOVE TEMP LIMIT
CFAULT
INT
FANS RUN ALARM SPEED
IS
TEMPERATURE
>
HIGH LIMIT?
IS
TEMPERATURE
>
HIGH LIMIT?
ALARM ABOVE
OR BELOW LOW
TEMP LIMIT?
LOW TEMP LIMT
CROSSED?
LOW TEMP LIMT
CROSSED?
LOW TEMP LIMT
CROSSED?
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