Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

ADT7460 Datasheet(PDF) 9 Page - ON Semiconductor

Part # ADT7460
Description  dBCOOL Remote Thermal Monitor and Fan Controller
Download  46 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

ADT7460 Datasheet(HTML) 9 Page - ON Semiconductor

Back Button ADT7460 Datasheet HTML 5Page - ON Semiconductor ADT7460 Datasheet HTML 6Page - ON Semiconductor ADT7460 Datasheet HTML 7Page - ON Semiconductor ADT7460 Datasheet HTML 8Page - ON Semiconductor ADT7460 Datasheet HTML 9Page - ON Semiconductor ADT7460 Datasheet HTML 10Page - ON Semiconductor ADT7460 Datasheet HTML 11Page - ON Semiconductor ADT7460 Datasheet HTML 12Page - ON Semiconductor ADT7460 Datasheet HTML 13Page - ON Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 46 page
background image
ADT7460
http://onsemi.com
9
ADT7460 Address Selection
Pin 8 is the dual−function PWM3/ADDRESS ENABLE
pin. If Pin 8 is pulled low on powerup, the ADT7460 reads
the state of Pin 9 (TACH4/ADDRESS SELECT/THERM)
to determine the ADT7460’s slave address. If Pin 8 is high
on powerup, the ADT7460 defaults to SMBus Slave
Address 0x2E. This function is described in more detail
later.
Internal Registers of the ADT7460
Table 1 summarizes the ADT7460’s principal internal
registers. Table 38 to Table 78 describe the registers in more
detail.
Table 1. Summary Internal Registers
Register
Description
Configuration
These registers provide control and configuration of the ADT7460, including alternate pinout functionality.
Address Pointer
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.
Status Registers
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.
Interrupt Mask
These registers allow each interrupt status event to be masked when Pin 14 or Pin 5 is configured as an
SMBALERT output.
Value and Limit
The results of analog voltage input, temperature, and fan speed measurements are stored in these
registers, along with their limit values.
Offset
These registers allow each temperature channel reading to be offset by a twos complement value written to
these registers.
TMIN
These registers program the starting temperature for each fan under automatic fan speed control.
TRANGE
These registers program the temperature−to−fan speed control slope in automatic fan speed control mode
for each PWM output.
Operating Point
These registers define the target operating temperatures for each thermal zone when running under
dynamic TMIN control. This function allows the cooling solution to adjust dynamically in response to
measured temperature and system performance.
Enhance Acoustics
These registers allow each PWM output controlling fan to be tweaked to enhance the system’s acoustics.
Theory of Operation
Serial Bus Interface
Control of the ADT7460 is carried out using the serial
System Management Bus (SMBus). The ADT7460 is
connected to this bus as a slave device, under the control of
a master controller.
The ADT7460 has a 7−bit serial bus address. When the
device is powered up with Pin 8 (PWM3/ ADDRESS
ENABLE) high, the ADT7460 has a default SMBus address
of 0101110 or 0x2E. If more than one ADT7460 is to be used
in a system, each ADT7460 should be placed in address
select mode by strapping Pin 8 low on powerup. The logic
state of Pin 9 then determines the device’s SMBus address.
The logic state of these pins is sampled on powerup.
The device address is sampled and latched on the first
valid
SMBus
transaction,
more
precisely,
on
the
low−to−high transition at the beginning of the eighth SCL
pulse, when the serial address byte matches the selected
slave address. The selected slave address is chosen using the
ADDRESS ENABLE/ADDRESS SELECT pins. Any
attempted changes in the address has no effect after this.
Table 2. Address Select Mode
Pin 8
State
Pin 9 State
Address
0
Low (10 k
W to GND)
0101100 (0x2C)
0
High (10 k
W pullup)
0101101 (0x2D)
1
Don’t Care
0101110 (0x2E) (default)
Figure 13. Default SMBus Address 0x2E
ADT7460
9
8
ADDR_SEL
PWM3/ADDR_EN
VCC
10kΩ
ADDRESS = 0x2E
Figure 14. SMBus Address 0x2C (Pin 9 = 0)
ADT7460
9
8
ADDR_SEL
PWM3/ADDR_EN
10k
Ω
ADDRESS = 0x2C


Similar Part No. - ADT7460

ManufacturerPart #DatasheetDescription
logo
Analog Devices
ADT7460 AD-ADT7460 Datasheet
695Kb / 48P
   dB COOL Remote Thermal Controller and Fan Controller
REV. 0
logo
ON Semiconductor
ADT7460 ONSEMI-ADT7460 Datasheet
698Kb / 47P
   Remote Thermal Monitor and Fan Controller
September, 2013 ??Rev. 9
logo
Analog Devices
ADT7460ARQ AD-ADT7460ARQ Datasheet
695Kb / 48P
   dB COOL Remote Thermal Controller and Fan Controller
REV. 0
logo
ON Semiconductor
ADT7460ARQ-REEL ONSEMI-ADT7460ARQ-REEL Datasheet
698Kb / 47P
   Remote Thermal Monitor and Fan Controller
September, 2013 ??Rev. 9
ADT7460ARQZ-REEL ONSEMI-ADT7460ARQZ-REEL Datasheet
698Kb / 47P
   Remote Thermal Monitor and Fan Controller
September, 2013 ??Rev. 9
More results

Similar Description - ADT7460

ManufacturerPart #DatasheetDescription
logo
Analog Devices
ADT7467 AD-ADT7467 Datasheet
1Mb / 80P
   dBCool Remote Thermal Monitor and Fan Controller
REV. 0
logo
ON Semiconductor
ADT7475_1110 ONSEMI-ADT7475_1110 Datasheet
639Kb / 58P
   dbCOOL Remote Thermal Monitor and Fan Controller
October, 2011 ??Rev. 5
logo
Analog Devices
ADT7473 AD-ADT7473 Datasheet
1Mb / 76P
   dBCool Remote Thermal Monitor and Fan Controller
REV. A
logo
ON Semiconductor
ADT7475 ONSEMI-ADT7475 Datasheet
654Kb / 58P
   dBCOOL Remote Thermal Monitor and Fan Controller
June, 2009 ??Rev. 4
ADT7467 ONSEMI-ADT7467 Datasheet
938Kb / 77P
   dBCool Remote Thermal Monitor and Fan Controller
January 2008 ??Rev. 3
logo
Analog Devices
ADT7475 AD-ADT7475 Datasheet
1Mb / 68P
   dBCool Remote Thermal Monitor and Fan Controller
REV. A
logo
ON Semiconductor
ADT7473 ONSEMI-ADT7473 Datasheet
1Mb / 74P
   dBCOOL Remote Thermal Monitor and Fan Control
April, 2009 ??Rev. 6
ADT7473 ONSEMI-ADT7473_11 Datasheet
1Mb / 74P
   dbCOOL Remote Thermal Monitor and Fan Control
October, 2011 ??Rev. 7
logo
Analog Devices
ADT7490 AD-ADT7490_15 Datasheet
1Mb / 76P
   dBCool Remote Thermal Monitor and Fan Controller with PECI Interface
Rev. 0
ADT7490 AD-ADT7490 Datasheet
1Mb / 76P
   dBCool Remote Thermal Monitor and Fan Controller with PECI Interface
REV. 0
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com