ADM1032ARM-REEL7

Manufacturer Part NumberADM1032ARM-REEL7
DescriptionIC TEMP MONITOR 85DEF 8MSOP
ManufacturerON Semiconductor
ADM1032ARM-REEL7 datasheet
 

Specifications of ADM1032ARM-REEL7

Rohs StatusRoHS non-compliantFunctionTemp Monitoring System (Sensor)
TopologyADC, Comparator, Multiplexer, Register BankSensor TypeExternal & Internal
Sensing Temperature0°C ~ 100°C, External SensorOutput TypeSMBus™
Output AlarmYesOutput FanYes
Voltage - Supply3 V ~ 5.5 VOperating Temperature0°C ~ 100°C
Mounting TypeSurface MountPackage / Case8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
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1
SCLK
SDATA
A6
START BY
MASTER
Figure 13. Writing a Register Address to the Address Pointer Register,
1
SCLK
A6
A5
A4
SDATA
START BY
MASTER
SERIAL BUS ADDRESS BYTE
Figure 14. Writing to the Address Pointer Register Only
19
SCLK
SDATA
A6
A5
A4
START BY
MASTER
SERIAL BUS ADDRESS BYTE
Figure 15. Reading Data from a Previously Selected Register
ALERT Output
The ALERT output goes low whenever an out−of−limit
measurement is detected, or if the remote temperature sensor
is open−circuit. It is an open drain and requires a pullup to
V
. Several ALERT outputs can be wire−OR’ed together
DD
so that the common line goes low if one or more of the
ALERT outputs goes low.
The ALERT output can be used as an interrupt signal to a
processor, or it can be used as an SMBALERT. Slave devices
on the SMBus can not normally signal to the master that they
want to talk, but the SMBALERT function allows them to do
so.
One or more ALERT outputs can be connected to a
common SMBALERT line connected to the master. When
the SMBALERT line is pulled low by one of the devices, the
following procedure occurs (see Figure 16).
9
A5
A4
A3
A2
A1
A0
R/W
ACK. BY
ADM1032
FRAME 1
SERIAL BUS ADDRESS BYTE
1
SCLK (CONTINUED)
D7
SDATA (CONTINUED)
then Writing Data to the Selected Register
9
1
A3
A2
A1
A0
R/W
D7
D6
ACK. BY
ADM1032
FRAME 1
1
A3
A2
A1
A0
R/W
D7
D6
ACK. BY
ADM1032
FRAME 1
MASTER
RECEIVES
SMBALERT
ALERT RESPONSE
START
1. SMBALERT is pulled low.
2. Master initiates a read operation and sends the
alert response address (ARA = 0001 100). This is
a general call address that must not be used as a
specific device address.
3. The device whose ALERT output is low responds
to the alert response address and the master reads
its device address. Since the device address is
http://onsemi.com
12
1
D6
D5
D4
D3
D2
D1
D0
D7
ACK. BY
ADM1032
FRAME 2
ADDRESS POINTER REGISTER BYTE
9
D6
D5
D4
D3
D2
D1
D0
ACK. BY
ADM1032
FRAME 3
DATA BYTE
9
D5
D4
D3
D2
D1
D0
ACK. BY
ADM1032
FRAME 2
ADDRESS POINTER REGISTER BYTE
9
D5
D4
D3
D2
D1
D0
ACK. BY
ADM1032
FRAME 2
DATA BYTE FROM ADM1032
DEVICE
NO
RD
ACK
ADDRESS
ADDRESS
ACK
MASTER SENDS
ARA AND READ
DEVICE SENDS
COMMAND
ITS ADDRESS
Figure 16. Use of SMBALERT
9
STOP BY
MASTER
STOP BY
MASTER
STOP BY
MASTER
STOP