ADT7470ARQZ Analog Devices Inc, ADT7470ARQZ Datasheet - Page 37

• Manufacturer Part Number: ADT7470ARQZ
• Description: IC SENSOR TEMP FAN CTRLR 16QSOP
• Manufacturer: Analog Devices Inc

Specifications of ADT7470ARQZ

• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Fan Speed Control, Register Bank
• Sensor Type: External
• Sensing Temperature: External Sensor
• Output Type: I²C™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Ic Output Type: Digital
• Sensing Accuracy Range: ± 12%
• Supply Current: 500µA
• Supply Voltage Range: 3V To 5.5V
• Sensor Case Style: QSOP
• No. Of Pins: 16
• Msl: MSL 3 - 168 Hours
• Termination Type: SMD
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Accuracy %: 12%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-ADT7470EBZ - BOARD EVALUATION FOR ADT7470
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Table 47. Register 0x7D. TMP05 Zone Select 2 (Power-On Default = 0x00).
Bit Name
[7:4] zone_fan3[3:0]
[3:0] zone_fan4[3:0]
Table 48. Register 0x7F. GPIO Enable (Power-On Default = 0x00).
Bit Name
[7:6] Reserved
[5:4] Reserved
[3] GPIO1_en
[2] GPIO2_en
[1] GPIO3_en
[0] GPIO4_en
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Reserved. Write 0x0 to these bits.
PWM1 becomes a GPIO.
PWM2 becomes a GPIO.
PWM3 becomes a GPIO.
PWM4 becomes a GPIO.
Description
Reserved. This bit should be set to 0.
Description
These bits determine which temperature zone controls Fan 3.
zone_fan3[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
These bits determine which temperature zone controls Fan 4.
zone_fan4[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
Rev. C | Page 37 of 40
Description
max_temperature from Register 0x78 controls Fan 3.
Temperature 1 from Register 0x20 controls Fan 3.
Temperature 2 from Register 0x21 controls Fan 3.
Temperature 3 from Register 0x22 controls Fan 3.
Temperature 4 from Register 0x23 controls Fan 3.
Temperature 5 from Register 0x24 controls Fan 3.
Temperature 6 from Register 0x25 controls Fan 3.
Temperature 7 from Register 0x26 controls Fan 3.
Temperature 8 from Register 0x27 controls Fan 3.
Temperature 9 from Register 0x28 controls Fan 3.
Temperature 10 from Register 0x29 controls Fan 3.
Description
max_temperature from Register 0x78 controls Fan 4.
Temperature 1 from Register 0x20 controls Fan 4.
Temperature 2 from Register 0x21 controls Fan 4.
Temperature 3 from Register 0x22 controls Fan 4.
Temperature 4 from Register 0x23 controls Fan 4.
Temperature 5 from Register 0x24 controls Fan 4.
Temperature 6 from Register 0x25 controls Fan 4.
Temperature 7 from Register 0x26 controls Fan 4.
Temperature 8 from Register 0x27 controls Fan 4.
Temperature 9 from Register 0x28 controls Fan 4.
Temperature 10 from Register 0x29 controls Fan 4.
ADT7470