ADT7476AARQZ ON Semiconductor, ADT7476AARQZ Datasheet - Page 49

• Manufacturer Part Number: ADT7476AARQZ
• Description: IC REMOTE THERM CTRLR 5V 24QSOP
• Manufacturer: ON Semiconductor
• Series: dBCool®r

Specifications of ADT7476AARQZ

• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Fan Speed Counter, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 24-QSOP
• Temperature Threshold: + 150 C
• Full Temp Accuracy: +/- 0.5 C
• Digital Output - Bus Interface: SMBus
• Digital Output - Number Of Bits: 8 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Description/function: Remote Thermal Controller
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Supply Current: 1.5 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 14. ADT7476A Registers
Addr
0x6C
0x6D
0x7C
0x7D
0x68
0x69
0x6A
0x6B
0x6E
0x6F
0x70
0x71
0x72
0x73
0x74
0x75
0x76
0x77
0x78
0x79
0x7A
0x7B
0x7E
0x7F
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
R/W
R/W
R/W
R
R
R
Local Temp/T
XNOR Tree Test
Remote 2 Temp
Remote 1 Temp
Remote 2 Temp
THERM Timer
THERM Timer
Local THERM
Remote 1 and
Interrupt Mask
Interrupt Mask
per Revolution
THERM Limit
THERM Limit
TACH Pulses
Configuration
Configuration
Configuration
Configuration
Local Temp
Local Temp
Temp/T
Hysteresis
Hysteresis
Resolution
Resolution
Register 2
Register 1
Register 2
Register 1
Register 2
Register 3
Register 5
Register 4
Remote 1
Remote 2
Remote 2
Extended
Extended
Enable
Status
Desc
Offset
Offset
Offset
Test 1
Test 2
T
T
Limit
Limit
MIN
MIN
MIN
MIN
THERM
HYSR1
HYSR2
TDM2
FAN4
Bit 7
5.0 V
BpAtt
OOL
TMR
LIMT
RES
RES
DC4
12 V
D2
R2
7
7
7
7
7
7
7
7
THERM
HYSR1
HYSR2
CONV
TDM2
FAN4
Bit 6
5.0 V
LIMT
Local
BpAtt
5.0 V
RES
TMR
R2T
DC3
D1
6
6
6
6
6
6
6
6
THERM
HYSR1
HYSR2
ATTN
LTMP
Bit 5
FAN3
BpAtt
V
TMR
LIMT
RES
DC2
F4P
V
http://onsemi.com
R1
LT
CCP
5
5
5
5
5
5
5
5
CC
Do not write to these registers
Do not write to these registers
HYSR1
HYRS
49
FAN3
LTMP
FAN3
GPIO
Bit 4
LIMT
BpAtt
2.5 V
RES
TMR
AVG
R1T
DC1
VID/
V
4
4
4
4
4
4
4
4
CC
GPIO6P
THERM
Detect
TDM1
Speed
HYSL
Bit 3
5.0 V
FAN2
V
FAST
FAN2
Fan3
TMR
LIMT
RES
RES
Max
CCP
on
3
3
3
3
3
3
3
3
GPIO6D
BOOST
THERM
Disable
Detect
TDM1
HYSL
FAN1
V
FAN2
Bit 2
Fan2
LIMT
RES
RES
VCC
TMR
CCP
2
2
2
2
2
2
2
2
THERM/
Detect
VCCP
FUNC
HYSL
PIN14
FAN1
Temp
Offset
Bit 1
Fan1
2.5 V
LIMT
RES
RES
OVT
12 V
TMR
2.5V
1
1
1
1
1
1
1
1
12 V/VC
THERM
ASRT/T
PresDT
ALERT
PIN14
FUNC
HYSL
2.5 V/
Bit 0
2.5 V
MRO
FAN1
LIMT
RES
XEN
12 V
Fan
2sC
0
0
0
0
0
0
0
0
0X5A
0X5A
fault
0X64
0X64
0X64
0X44
0X40
0X00
0X00
0X00
0X00
0X00
0X00
0X00
0X00
0X00
0x00
0x00
0x00
0x55
0x01
0x00
0x00
0x00
De-
Lock-
able
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
−
−
−
−
−
−
−