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| 型号： | ADM1034ARQZ-REEL7 |
| 厂商： | ON Semiconductor |
| 文件页数： | 18/38页 |
| 文件大小： | 427K |
| 描述： | IC THERM/FAN SPEED CTRLR 16-QSOP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi |
| 标准包装： | 1,000 |
| 功能： | 风扇控制，温度监控器 |
| 传感器类型： | 内部和外部 |
| 感应温度： | -40°C ~ 125°C，外部传感器 |
| 精确度： | ±1°C |
| 拓扑： | ADC，比较器，多路复用器，寄存器库 |
| 输出类型： | SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (TR) |
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ADM1034
http://onsemi.com
18
Table 17. INTERRUPT STATUS REGISTER 1
(REG. 0X4F)
Bit #
Name
Description
7
LH
1 = Local high temperature limit has been
exceeded.
6
LL
1 = Local low temperature limit has been
exceeded.
5
R1H
1 = Remote 1 high temperature limit has
been exceeded.
4
R1L
1 = Remote 1 low temperature limit has
been exceeded.
3
R1D
1 = Remote 1 diode error; indicates an
open or short on the D1+/D1 pins.
2
R2H
1 = Remote 2 high temperature limit has
been exceeded.
1
R2L
1 = Remote 2 low temperature limit has
been exceeded.
0
R2D
1 = Remote 2 diode error; indicates an
open or short on the D2+/D2 pins.
Table 18. STATUS REGISTER 2 (REG. 0X50)
Bit #
Name
Description
7
LT
1 = Local THERM
temperature limit has
been exceeded.
6
R1T
1 = Remote 1 THERM
temperature limit
has been exceeded.
5
R2T
1 = Remote 2 THERM
temperature limit
has been exceeded.
4
T%
1 = THERM
% ontime limit has been
exceeded.
3
TA
1 = One of the THERM
limits has been
exceeded; and the THERM
output signal
has been asserted.
2
TS
1 = THERM
state. Indicates the THERM
pin is active; clears on a read if THERM
is not active. Does not generate an
ALERT
in ALERT
comp mode.
1
Res
Reserved
0
Res
Reserved
Table 19. STATUS REGISTER 3 (REG. 0X51)
Bit #
Name
Description
7
F1S
1 = Fan 1 has stalled.
6
FA
1 = Fan alarm speed. Fan1 and Fan 2
are running at alarm speed.
5
F2S
1 = Fan 2 has stalled.
4
Res
Reserved
3
Res
Reserved
2
Res
Reserved
1
Res
Reserved
0
ALERT
1 = ALERT
low; indicates the ALERT
line has been pulled low.
ALERT
Interrupt Behavior
The ADM1034 generates an ALERT
whenever an
out-of-limit measurement is made (if it is not masked out).
The user can also detect out-of-limit conditions by polling
the ADM1034 status registers. It is important to note how
the SMBus ALERT
output behaves when writing interrupt
handler software.
The ALERT
output on the ADM1034 can be programmed
to operate in either SMBusALERT
mode or in comp mode.
In SMBusALERT
mode, the ALERT
output remains low
until the measurement falls back within its programmed
limits and either the status register is read or an ARA is
completed. In comp mode, the ALERT
output automatically
resets once the temperature measurement falls back within
the programmed limits.
Configuring the ALERT
Output
For SMBusALERT
mode, set the ALERT
configuration bit
(Bit 3) of the Configuration Register 1 (Address 0x01) to 0.
In SMBusALERT
mode, a status bit is set when a
measurement goes outside of its programmed limit. If the
corresponding mask bit is not set, the ALERT
output is
pulled low. If the measured value falls back within the limits,
the ALERT
output remains low until the corresponding
status register is read or until an ARA is completed (as long
as no other measurement is outside its limits).
For comp mode, set the ALERT
configuration bit (Bit 3)
of Configuration Register 1 (Address 0x01) to1.
In comp mode, the ALERT
output is automatically pulled
low when a measurement goes outside its programmed limits.
Once the measurement falls back within its limits (and
assuming no other measurement channel is outside its limits),
the ALERT
output is automatically pulled high again.
The main difference between the two modes is that the
SMBusALERT
does not reset without software intervention,
whereas the comp mode ALERT
output automatically resets.
Figure 30. ALERT
Comparator and SMBusALERT
Outputs
TEMPERATURE
LIMITS
TIME
CLEARED
ON READ
SMBusALERT
ALERT
COMP
ALERT
, 705C
Handling SMBusALERT
Interrupts
To prevent tie-ups due to service interrupts, follow these
steps:
1. Detect an SMBus assertion.
2. Enter the interrupt handler.
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| ADM1041AARQZ | 功能描述:IC SECONDARY SIDE CTRLR 24QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
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