ADT7476ARQZ ON Semiconductor, ADT7476ARQZ Datasheet - Page 47

• Manufacturer Part Number: ADT7476ARQZ
• Description: IC REMOTE THERMAL CTRLR 24QSOP
• Manufacturer: ON Semiconductor
• Series: dBCool®r

Specifications of ADT7476ARQZ

• 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
• Full Temp Accuracy: +/- 0.5 C
• Digital Output - Bus Interface: Serial (3-Wire, 4-Wire)
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register Tables
Table 14. ADT7476 Registers
Addr
0x2C
0x2D
0x3D
0x10
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x2A
0x2B
0x2E
0x2F
0x30
0x31
0x32
0x38
0x39
0x3A
0x3E
0x3F
0x40
0x41
0x42
0x11
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
PWM1 Current
PWM2 Current
PWM3 Current
Interrupt Status
Interrupt Status
Measurement
Measurement
Measurement
Measurement
Measurement
Configuration
Configuration
Configuration
Temperature
Temperature
Temperature
TACH1 High
TACH2 High
TACH3 High
TACH4 High
Company ID
TACH1 Low
TACH2 Low
TACH3 Low
TACH4 Low
PWM1 Max
PWM2 Max
PWM3 Max
Revision ID
Duty Cycle
Duty Cycle
Duty Cycle
Duty Cycle
Duty Cycle
Duty Cycle
Register 6
Register 7
Register 1
Register 1
Register 2
Remote 1
Remote 2
Device ID
Register
Number
Desc
V
2.5 V
5.0 V
Local
12 V
V
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
CCP
CC
Bit 7
Extra
Slow
OOL
RES
RES
D2
15
15
15
15
9
9
9
9
9
9
9
9
7
7
7
7
7
7
7
7
7
7
7
7
7
TODIS
Bit 6
V
RES
R2T
Low
D1
CCP
14
14
14
14
8
8
8
8
8
8
8
8
6
6
6
6
6
6
6
6
6
6
6
6
6
FSPDIS
Master
Bit 5
RES
F4P
http://onsemi.com
En
13
13
13
13
LT
7
7
7
7
7
7
7
7
5
5
5
5
5
5
5
5
5
5
5
5
5
SlaveEn
47
FAN3
Bit 4
RES
R1T
Vx1
12
12
12
12
6
6
6
6
6
6
6
6
4
4
4
4
4
4
4
4
4
4
4
4
4
THERM
Manual
FSPD
Bit 3
5.0 V
FAN2
RES
11
11
11
11
in
5
5
5
5
5
5
5
5
3
3
3
3
3
3
3
3
3
3
3
3
3
SlowFan
Remote
FAN1
Bit 2
RES
RDY
V
10
10
10
10
1
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
2
2
2
2
2
CC
SlowFan
LOCK
V
Bit 1
Local
RES
OVT
CCP
3
3
3
3
3
3
3
3
1
9
1
9
1
9
1
9
1
1
1
1
1
1
1
1
1
SlowFan
12 V/VC
Remote
THERM
THERM
STRT
2.5 V/
Bit 0
Hys
Dis
1
2
2
2
2
2
2
2
2
0
8
0
8
0
8
0
8
0
0
0
0
0
0
0
0
0
fault
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0x6B
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x80
0x80
0x80
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x76
0x41
0x04
0x00
0x00
De-
Lock-
able
Yes
Yes
Yes
Yes
Yes
Yes
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−