ADT7460ARQ-REEL ON Semiconductor, ADT7460ARQ-REEL Datasheet - Page 10

• Manufacturer Part Number: ADT7460ARQ-REEL
• Description: IC SENSOR TEMP FAN-CTRL 16QSOP
• Manufacturer: ON Semiconductor
• Series: dBCool®r

Specifications of ADT7460ARQ-REEL

• Rohs Status: RoHS non-compliant
• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 120°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 120°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP

ADT7460
ADT7460 AD
Pin 8 is the dual
Pin 8 is pulled low on p
Pin 9 (T
ADT7460’s slave addres
ADT
is desc
Table 4. Summary Inte
Register
Configuration
Address Pointer
Status Registers
Interrupt Mask
Value and Limit
Offset
T
T
Operating Point
Enhance Acoustics
MIN
RANGE
7460 defaults to SM
ribed in more de
ACH4/ADDRE
-functio
DRES
S SELECTION
tail later.
ower-up, the ADT7460 reads the state of
SS SELECT/ THERM ) to determine the
s. If Pin 8 i
rnal Registers
Description
These registers provide control and configuration of the ADT7460, including alternate pinout functionality.
This register contains the address that selects one of the other internal registers. When writing to the ADT7460, the
first byte of data is always a register address, which is written to the address pointer register.
These registers provide the status of each limit comparison and are used to signal out-of-limit conditions on the
temperature, voltage, or fan speed channels. If Pin 14 or Pin 5 is configured as SMBALERT, this pin asserts low
whenever an unmasked status bit is set.
These registers allow each interrupt status event to be masked when Pin 14 or Pin 5 is configured as an SMBALERT
output.
The results of analog voltage input, temperature, and fan speed measurements are stored in these registers, along
with their limit values.
These registers allow each temperature channel reading to be offset by a twos complement value written to these
registers.
These registers program the starting temperature for each fan under automatic fan speed control.
These registers program the temperature-to-fan speed control slope in automatic fan speed control mode for each
PWM output.
These registers define the target operating temperatures for each thermal zone when running under dynamic T
control. This function allows the cooling solution to adjust dynamically in response to measured temperature and
system performance.
These registers allow each PWM output controlling fan to be tweaked to enhance the system’s acoustics.
n PWM
Bus Slave Address 0x2E. This function
3/ ADDRESS ENABLE pin. If
s high on power-up, the
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INTERNAL REGISTERS OF THE ADT7460
Table 4 summarizes the ADT7460’s principal internal registers.
Table 41 to Table 81 describe the registers in more detail.
MIN