ADT7460ARQZ ON Semiconductor, ADT7460ARQZ Datasheet - Page 31

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ADT7460ARQZ

Manufacturer Part Number
ADT7460ARQZ
Description
IC REMOTE THRML/FAN CTRLR 16QSOP
Manufacturer
ON Semiconductor
Series
dBCool®r
Datasheets

Specifications of ADT7460ARQZ

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
Full Temp Accuracy
+/- 3 C
Digital Output - Bus Interface
Serial (3-Wire)
Maximum Operating Temperature
+ 120 C
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Part Number:
ADT7460ARQZ
Manufacturer:
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Quantity:
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Part Number:
ADT7460ARQZ-REEL
Manufacturer:
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16
1. These voltage readings are in twos complement format. If the extended resolution bits of these readings are also being read, the extended
1. These voltage readings are in twos complement format.
2. Note that a reading of 0x80 in a temperature reading register indicates a diode fault (open or short) on that channel. If the extended resolution
Table 38. ADT7460 Registers
Table 39. Voltage Reading Registers (Power−On Default = 0x00)
Table 40. Temperature Reading Registers (Power−On Default = 0x80)
Addr
0x6A
0x6B
0x6C
0x6D
0x6E
0x7A
0x7B
0x7D
0x7E
0x6F
0x70
0x71
0x72
0x73
0x74
0x75
0x76
0x77
0x78
0x79
0x7F
Register Address
Register Address
resolution registers (Reg. 0x76, 0x77) should be read first. Once the extended resolution registers are read, the associated MSB reading
registers are frozen until read. Both the extended resolution registers and the MSB registers are frozen.
bits of these readings are also being read, the extended resolution registers (Reg. 0x76, 0x77) should be read first. Once the extended
resolution registers are read, the associated MSB reading registers are frozen until read. Both the extended resolution registers and the MSB
registers are frozen.
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0x20
0x22
0x25
0x26
0x27
R
R
R
Remote1 THERM
Limit
Local THERM Limit
Remote2 THERM
Limit
Remote1 Local
Hysteresis
Remote2 Temp
Hysteresis
XNOR Tree Test
Enable
Remote1 Temp
Offset
Local Temp Offset
Remote2 Temp
Offset
Config Reg 2
Interrupt Mask Reg 1
Interrupt Mask Reg 2
Ext Resolution 1
Ext Resolution 2
Config Reg 3
THERM Status Reg
THERM Limit Reg
Fan Pulses per
Revolution
Config Reg 4
Test Register 1
Test Register 2
Desc
Read−only
Read−only
Read−only
Read−only
Read−only
R/W
R/W
HYSR1
HYSR2
SHDN
TDM2
FAN4
Bit 7
LIMT
RES
OOL
RES
DC4
TMR
RES
D2
2.5 V Reading (8 MSBs of reading)
V
Remote 1 temperature reading−PP(8 MSBs of reading). (Note 2)
Local temperature reading (8 MSBs of reading).
Remote 2 temperature reading (8 MSBs of reading).
7
7
7
7
7
7
CC
Reading: Measures V
HYSR1
HYSR2
CONV
TDM2
FAN4
Bit 6
LIMT
RES
RES
TMR
RES
R2T
DC3
D1
6
6
6
6
6
6
http://onsemi.com
HYSR1
HYSR2
LTMP
ATTN
FAN3
LIMT
Bit 5
RES
TMR
RES
V
DC2
F4P
LT
ADT7460
5
5
5
5
5
5
CC
DO NOT WRITE TO THESE REGISTERS
DO NOT WRITE TO THESE REGISTERS
31
CC
through the V
HYSR1
HYSR2
FAN3
LTMP
FAN3
Bit 4
TMR
LIMT
RES
AVG
DC1
RES
R1T
V
4
4
4
4
4
4
CC
(Note 1)
HYSL
TDM1
FAN2
FAST
FAN2
Bit 3
AIN4
TMR
LIMT
AINL
Description
Description
RES
RES
RES
RES
3
3
3
3
3
3
(Note 1)
CC
pin (8 MSBs of reading)
BOOST
HYSL
TDM1
FAN1
FAN2
Bit 2
RES
RES
AIN3
RES
TMR
LIMT
AINL
V
2
2
2
2
2
2
CC
ENABLE
THERM
HYSL
FAN1
Bit 1
AIN2
TMR
LIMT
RES
RES
RES
OVT
2.5V
RES
RES
1
1
1
1
1
1
ALERT
AL2.5V
ASRT/
HYSL
FAN1
AIN1
TMR
LIMT
Bit 0
RES
XEN
2.5V
RES
2.5V
RES
0
0
0
0
0
0
fault
0x64
0x64
0x64
0x44
0x40
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x55
0x00
0x00
0x00
De-
Lock-
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
able

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